JP2010043817A - Air conditioning system of server chamber - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve the temperature environment of a server chamber and to contribute to energy saving. <P>SOLUTION: In an air conditioning system, a server storage chamber 1a for storing a row of racks 9 is provided in the server chamber 1 as a separate structure from the server chamber 1, and the inside of the server chamber 1 is partitioned into a hot zone H formed with the server storage chamber 1a and a cool zone C formed outside the server storage chamber 1a. The air conditioning system includes: a blower 8a unique to a server for taking in atmosphere inside the cool zone C into a server 8, and discharging the atmosphere in the server 8 warmed in the server 8 by heat exchange into the hot zone H; a blower unique to an air conditioning device for sucking air on the hot zone H side into the air conditioning device 3 and discharging the air cooled in the air conditioning device 3 to the cool zone C side; and an air amount control means for controlling an air amount discharged from the blower unique to the air conditioning device into the hot zone H through the cool zone C, and an air amount returned from the hot zone H to the air conditioning device 3, so that the air amounts become substantially equal. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an air conditioning system for a server room, and more particularly, to an air conditioning system for a server room that cools the server by forcibly blowing cool air into the server room where the server is installed.

  Conventionally, many servers are installed in a data center or a server room of a company, and the server may run away or break down due to heat generated from the server. Therefore, in order to prevent this problem, an air conditioning system that maintains a constant temperature of the entire room in which the server is installed is employed (for example, see Patent Document 1).

  19 and 20 show an example of a conventional server room air conditioning system. As shown in FIG. 20, a conventional server room air conditioning system includes racks 53, 53,... In which a plurality of servers 52, 52, 52, 52 are vertically mounted as shown in FIG. As shown in FIG. 19, a plurality of rack rows 54 arranged in a single row are installed, and a plurality of air conditioners 55 for maintaining the temperature of the entire room of the server room 51 in the server room 51 is also maintained. , 55... Are installed.

  As shown in FIG. 20, the server room 51 is provided with an air circulation space 58 having an air intake 56 and an air outlet 57 below the floor, and an air circulation having an air intake 59 and an air outlet 60 on the ceiling. A space 61 is provided.

In this air conditioning system, the cold air generated by each of the air conditioners 55, 55... Is blown into the server room 51 from under the floor through the air intake 56, the air circulation space 58, and the air exhaust 57 in order. The cool air passes through the inside of each server 52, 52 ... to cool each server 52, 52 .... On the other hand, heat is exchanged in each of the servers 52, 52... And warmed air discharged from each of the servers 52, 52... Is sent to the ceiling side air intake 59, air circulation space 61, and air exhaust 60. Are returned to the air conditioner 55 in order, cooled again, and sent to the servers 52, 52. Therefore, the entire room is air-conditioned by this air circulation.
JP 2003-56882 A

  However, in recent years, the processing capacity of servers has been improved, and space-saving small servers have become widespread. Since this small server generates a large amount of heat and has a large amount of heat exhaust, in the entire room air conditioning by the air conditioning system as shown in Patent Document 1 and FIGS. 19 and 20, the generated heat from each server is sufficiently removed. I can't. For this reason, there has been a problem that heat accumulation occurs and the server runs away. In addition, there is a case where the heat treatment efficiency of the server room is poor and wasteful electric energy is consumed.

  Therefore, there are technical issues that need to be solved in order to improve the heat treatment efficiency of the server room, improve the temperature environment around the server, and eliminate unnecessary power energy consumption and contribute to energy saving. The present invention aims to solve this problem.

  The present invention has been proposed to achieve the above object, and the invention according to claim 1 is a space in a server room in which a plurality of racks in which a plurality of servers are arranged in a vertical direction are arranged in a row. In the air conditioning system that cools the apparatus by an air conditioner, a server storage room in which the row of racks is stored in the server room is structurally separated from the server room, and the server room is formed together with the server storage room. The zone is divided into a zone and a cool zone formed outside the server storage room, the atmosphere in the cool zone is taken into the server, and the atmosphere in the server heated by heat exchange in the server is A blower specific to the server to be discharged into the hot zone and the air on the hot zone side are sucked into the air conditioner and the air cooled in the air conditioner is A blower specific to the air conditioner to be discharged to the air zone side, and a circulation fan to be installed in parallel with the air conditioner when the blower specific to the air conditioner has a smaller air volume than the blower specific to the server, a blower unique to the air conditioner, and An air volume control system for a server room, comprising: an air volume control means for controlling an air volume discharged from the circulation fan through the cool zone into the hot zone and an air volume returned from the hot zone to the air conditioner. I will provide a.

  According to this configuration, the server room is divided into a hot zone in which a server that generates heat is arranged and cooling is required and a cool zone in which no server is arranged, and the cool air sent into the cool zone is passed through the server. The server is fed into the hot zone to efficiently cool the server and increase the heat treatment efficiency. Also, the air volume control means controls the air volume discharged from the blower unique to the air conditioner through the cool zone into the hot zone so that it is almost equal to the air volume returned from the hot zone to the air conditioner, and the air balance between the zones is controlled. Can be optimized.

  According to a second aspect of the present invention, the air volume control means opens between the hot zone and the cool zone according to the magnitude of the negative pressure when the hot zone becomes a negative pressure, There is provided an air conditioning system for a server room provided with an openable and closable bypass passage that bypasses a server and allows the atmosphere in the cool zone to be taken into the hot zone.

  According to this configuration, when the amount of air discharged from the blower unique to the air conditioner to the cool zone is less than the amount of air discharged from the hot zone toward the air conditioner by the air volume control means, The bypass passage opens according to the magnitude of the negative pressure, bypasses the server, the atmosphere in the cool zone is taken into the hot zone, and the air balance between the zones can be optimized.

  According to a third aspect of the present invention, the server room has a double floor and ceiling structure each having an air circulation space therebetween, and the one air circulation space is used as a cold air outlet of the air conditioner. And an air intake system in the cool zone, and the other air circulation space is in communication with the exhaust port of the hot zone and the air intake port of the air conditioner.

  According to this configuration, the cool air from the air conditioner is sent from the under floor to the cool zone through the air circulation space under the floor and passed through the server, and the atmosphere in the hot zone that has been deprived of heat in the server is heated on the back of the ceiling. An air flow path that returns to the air conditioner through the air circulation space is formed.

  According to a fourth aspect of the present invention, there is provided an air conditioning system for a server room in which the cool zone is provided at the center of the server room and the server storage room is provided so as to surround the outer periphery of the cool zone.

  According to this configuration, it is possible to efficiently cool the server storage chamber by flowing cool air from the cool zone provided in the central portion of the server room to the server storage chamber provided so as to surround the outer periphery of the cool zone.

  According to a fifth aspect of the present invention, the server room has a double floor or ceiling structure with an air circulation space in between, and the air circulation space is connected to the cool air outlet of the air conditioner and the cool air. Provided is an air conditioning system for a server room that communicates with an air intake port of a zone and communicates an air intake port of the air conditioner with the hot zone.

  According to this configuration, the cool air from the air conditioner is sent to the cool zone and passed through the server, and the atmosphere in the hot zone that has been deprived of heat in the server is passed through the air circulation space under the floor or behind the ceiling. An air flow path to return to is formed.

  According to a sixth aspect of the present invention, the server room has a double floor or / and ceiling structure with an air circulation space therebetween, and is structurally separated from the server storage room. A ventilated pit chamber that extends in the vertical direction along the side surface of the storage chamber and communicates with the air circulation space on the upper side and / or the lower side is provided, and the atmosphere in the hot zone is taken into the pit chamber for cooling. And providing an air conditioning system for a server room provided with the air conditioner for sending the cooled air into the cool zone through the air circulation space.

  According to this configuration, the cool air from the air conditioner is sent to the cool zone through the air circulation space under the floor or / and behind the ceiling, passed through the server, and the atmosphere in the hot zone that is deprived of heat in the server is heated. An air flow path that returns to the air conditioner in the pit chamber is formed.

  According to a seventh aspect of the present invention, the air flow control means includes a differential pressure sensor that detects a pressure difference in the cool zone and a pressure in the hot zone, and according to the differential pressure detected by the differential pressure sensor. Provided is an air conditioning system for a server room that variably controls the air volume by a blower unique to the air conditioner.

  According to this configuration, the air volume control means variably controls the air volume by the blower unique to the air conditioner according to the pressure difference between the pressure in the cool zone and the pressure in the hot zone, which fluctuates depending on the operating status of the server. Can optimize the air balance.

  According to an eighth aspect of the present invention, the air volume control means includes a power consumption sensor that monitors the power consumption of the server body, and the air volume of the air conditioner specific blower according to the power consumption detected by the power consumption sensor An air conditioning system for a server room that variably controls the system is provided.

  According to this configuration, the air volume control means can variably control the air volume of the air blower specific to the air conditioner according to the power consumption of the air blower specific to the air conditioner that varies depending on the operating status of the server, and can optimize the air balance between the zones .

  According to a ninth aspect of the present invention, the air flow control means includes a temperature sensor that detects a temperature of air returned from the hot zone to the air conditioner, and the airflow control unit is specific to the air conditioner according to the temperature detected by the temperature sensor. An air conditioning system for a server room that variably controls the amount of air flow from the blower.

  According to this configuration, the air volume control means variably controls the air volume by the blower unique to the air conditioner according to the temperature of the air returned to the air conditioner from the hot zone that fluctuates depending on the operation status of the server, and the air balance between the zones is controlled. Can be optimized.

  The invention according to claim 10 provides an air conditioning system for a server room in which the air flow control means performs inverter control of a fan of a blower unique to the air conditioner to vary the rotational speed of the fan, and variably controls the air flow by the blower. To do.

  According to this configuration, when the air volume control means inverter-controls the fan of the blower unique to the air conditioner, the rotational speed of the fan is varied, and the air volume by the blower also varies due to the fluctuation of the rotational speed of the fan.

  According to an eleventh aspect of the present invention, the air volume control means controls the voltage for rotating the fan of the air conditioner to vary the number of rotations of the fan so as to variably control the air volume by the fan. Provide a system.

  According to this configuration, when the air volume control means controls the voltage for rotating the fan of the air blower unique to the air conditioner, the rotation speed of the fan is varied, and the air volume by the blower also varies with the fluctuation of the rotation speed of the fan.

  The invention according to claim 12 is configured such that the air conditioner is installed in parallel with a plurality of fans that can be individually operated in the ventilation path, and the air volume control means switches the number of fans that are operated to switch the number of fans. Provided is an air conditioning system for a server room that variably controls the air volume by a blower.

  According to this configuration, when the air volume control means switches the number of fans to be operated, the air volume by the fans also varies according to the number of fans to be operated.

  According to a thirteenth aspect of the present invention, an air conditioning system for a server room in which the air conditioner includes a blower having an inlet vane, and the air volume control means adjusts the opening degree of the inlet vane of the blower to variably control the air volume by the blower. I will provide a.

  According to this configuration, when the air volume control means adjusts the opening degree of the inlet vane, the air volume by the blower also varies according to the adjustment amount.

  According to a fourteenth aspect of the present invention, there is provided a server room in which the air conditioner includes a damper capable of adjusting an opening degree of the ventilation path, and the air volume control unit adjusts the opening degree of the damper to variably control the air volume by the blower. Provide air conditioning system.

  According to this configuration, when the air volume control means adjusts the opening degree of the damper, the air volume by the blower also varies according to the adjustment amount.

  According to the first aspect of the present invention, the server room is divided into a hot zone and a cool zone, and in particular, the inside of the cool zone requiring cooling can be efficiently cooled, so that the heat treatment efficiency is improved. Moreover, the air volume control means can optimize the air balance between the conditioned air and the server heat treatment air. As a result, heat accumulation due to recirculation of the heat exhaust can be prevented, and the temperature environment around the server can be improved. Furthermore, the use of high-efficiency operation of the air conditioner by increasing the temperature of the return air of the air conditioner and the reduction of computer power consumption by lowering the temperature of the server intake air contribute to energy saving by eliminating unnecessary power energy consumption.

  Since the invention according to claim 2 can further optimize the air balance between the cool zone and the hot zone, in addition to the effect of the invention according to claim 1, the thermal load of the server can be further reduced. As well as being able to reduce energy consumption, it contributes to energy saving.

  The invention according to claim 3 has an air flow path for returning the cold air discharged from the air conditioner to the air conditioner again through the air circulation space under the floor through the cool zone, the server and the hot zone, and the air circulation space behind the ceiling in order. In addition to the effect of the invention according to claim 2, it is possible to further reduce the thermal load of the server and further reduce wasteful power energy consumption, thereby saving energy. Contribute further.

  According to the fourth aspect of the present invention, the server storage room can be efficiently cooled by flowing cool air from the cool zone provided in the center of the server room into the server storage room. In addition, the thermal load on the server can be further reduced. In addition, useless power energy consumption is further reduced, which further contributes to energy saving.

  According to the fifth aspect of the present invention, the cold air discharged from the air conditioner is smoothly passed through the air flow path through the cool zone, the server and the hot zone, the air flow space under the floor or the ceiling, and then returned to the air conditioner again. Therefore, in addition to the effect of the invention according to claim 2, the thermal load of the server can be further reduced. In addition, useless power energy consumption is further reduced, which further contributes to energy saving.

  The invention according to claim 6 is an air flow in which the cool air from the air conditioner in the pit chamber is returned to the air conditioner in the pit chamber again through the air flow space under the floor or / and the ceiling, the cool zone, the server and the hot zone in this order. Since it can flow smoothly through the road, in addition to the effect of the invention of claim 2, the thermal load of the server is further reduced. In addition, useless power energy consumption is further reduced, which further contributes to energy saving.

  According to the seventh aspect of the present invention, the air volume control means variably controls the air volume by the air blower unique to the air conditioner based on the differential pressure between the pressure in the cool zone and the pressure in the hot zone, which fluctuates depending on the operation status of the server. Since the air balance between the zones is obtained, the air balance between the zones can be easily optimized in addition to the effect of the first aspect of the invention.

  According to the eighth aspect of the invention, since the air volume control means variably controls the air volume by the blower unique to the air conditioner based on the power consumption of the server main body, which fluctuates depending on the operating status of the server, In addition to the effect of the invention described in item 1, optimization of the air balance between zones can be easily obtained.

  According to the ninth aspect of the present invention, the air volume control means variably controls the air volume by the air blower unique to the air conditioner based on the temperature of the air returned to the air conditioner from the hot zone that fluctuates depending on the operation status of the server, and the air balance between zones Therefore, in addition to the effect of the first aspect of the invention, optimization of the air balance between the zones can be easily obtained.

  In the invention described in claim 10, since the air volume control means performs inverter control of the fan of the air blower unique to the air conditioner and variably controls the air volume by the fan, in addition to the effect of the invention of claim 7, 8 or 9, Air volume adjustment by the air blower unique to the air conditioner becomes easy.

  In the invention described in claim 11, since the air volume control means controls the voltage for rotating the fan in the air blower unique to the air conditioner and variably controls the air volume of the air blower, the effect of the invention of claim 7, 8 or 9 is achieved. In addition, the air volume adjustment by the air blower unique to the air conditioner is simplified.

  According to the twelfth aspect of the present invention, since the air volume control means switches the number of operating units of the plurality of blowers to variably control the air volume by the blowers, in addition to the effects of the seventh, eighth or ninth aspects, Air volume adjustment by a blower unique to the device is simplified.

  According to the thirteenth aspect of the present invention, since the air volume control means adjusts the opening degree of the inlet vane of the blower to variably control the air volume by the blower, in addition to the effects of the seventh, eighth or ninth aspect, the air conditioning Air volume adjustment by a blower unique to the device is simplified.

  In the invention according to claim 14, since the air volume control means adjusts the opening degree of the damper of the blower to variably control the air volume by the blower, in addition to the effect of the invention according to claim 7, 8 or 9, the air conditioner Air volume adjustment by a unique blower becomes easy.

  In order to achieve the purpose of improving the heat treatment efficiency of the server room to reduce the thermal load of the server room and reducing the consumption of unnecessary power energy and contributing to energy saving, the present invention is configured to move a plurality of servers in the vertical direction. In an air conditioning system for cooling a server room space in which a plurality of racks arranged in a row are installed by an air conditioner, a server storage room in which the rack row is stored in the server room is structurally different from the server room. Separately provided, the server room is divided into a hot zone formed with the server storage room and a cool zone formed outside the server storage room, and the atmosphere in the cool zone is taken into the server, And the server specific blower for discharging the atmosphere in the server heated by exchanging heat in the server into the hot zone, and The air blower specific to the air conditioner that sucks the air in the air zone side into the air conditioner and discharges the air cooled in the air conditioner to the cool zone side, and the air blower specific to the air conditioner has a smaller air volume than the fan specific to the server A circulation fan installed in parallel with the air conditioner, an air volume discharged from the air blower unique to the air conditioner through the cool zone into the hot zone, and an air volume returned from the hot zone to the air conditioner. This is realized by having a configuration including air volume control means for controlling to be substantially equal.

  The server room air conditioning system of the present invention will be described below with reference to preferred embodiments. 1 to 3 are diagrams schematically showing an embodiment of an air conditioning system for a server room according to the present invention. In the figure, a server room 1 is provided, for example, in a data center or a corporate building.

  In the server room 1, a server storage room 1a that is structurally separated from the server room 1 by a tool partition 2 is provided in a substantially central portion, and the server room 1 includes a zone including the server storage room 1a. It is divided into H (hereinafter referred to as “hot zone H”) and zone C (hereinafter referred to as “cool zone C”) not including the server storage room 1a. An air conditioner 3 is installed in the cool zone C.

  As shown in FIG. 2, the air conditioner 3 takes outside air (hot zone H atmosphere) into and discharges air from the air conditioner unique to the air conditioner (blower) 4 and outside air taken in by the blower 4. And a cooling part 5 for cooling by exchanging heat. Further, the driving of the air conditioner 3 is controlled by a control unit 6 constituted by a microcomputer.

  As shown in FIG. 1, rack rows 7 and 7 are arranged in parallel in the server storage chamber 1a in the hot zone H. Each rack row 7, 7 is formed by arranging a plurality of racks 9, 9... In which a plurality of servers 8, 8. The servers 8, 8... Each have a server-specific blower 8 a, and take in outside air (cold air) that is a cool zone C atmosphere from the front side of the servers 8, 8. The air heated by the heat exchange in 8, 8... Is discharged into the hot zone H from the back side. In general, the operation of the blower 8a unique to the server depends on the operating conditions in the servers 8, 8,..., And the air volume cannot be controlled by operating the operation freely from the outside.

  Each rack row 9, 9 is installed with the backs of the servers 8, 8... In the rows facing each other, and the heat released from each server 8, 8. It collects in the middle, and this can be smoothly flowed toward the said air-conditioning apparatus 3. FIG.

As shown in FIGS. 2 and 3, the floor 10 of the server room 1 is formed as a double floor structure with an air circulation space 11 in between. Further, in the cool zone C of the floor 10, a plurality of vent holes 12, 12,... Communicating between the air circulation space 11 and the cool zone C are provided adjacent to the server accommodating chamber 1a. ing. The air circulation space 11 is connected to the exhaust port side of the air conditioner 3, and cool air that is cooled in the air circulation space 11 by the cooling unit 5 of the air conditioner 3 and is discharged by the blower 4. The cool air is blown into the cool zone C through the vent holes 12, 12,.

  As shown in FIGS. 2 and 3, the ceiling 13 of the server room 1 is formed as a double ceiling structure with an air circulation space 14 therebetween. Further, the ceiling 13 of the hot zone H has a plurality of ventilation holes 15, 15 communicating with the air circulation space 14 and the hot zone H of the server room 1, that is, the server storage room 1 a and the air circulation space 14. ... is provided. The air circulation space 14 is connected to the inlet side of the air conditioner 3, and the air circulation space 14 has an atmosphere (warm air) in the hot zone H from the server storage chamber 1 a toward the air conditioner 3. ) Is flowing.

  In addition, a bypass vent 16 (air flow control means) as a bypass passage capable of taking the atmosphere (cool air) in the cool zone C into the hot zone H is provided in the upper part of the server storage chamber 1a. The bypass vent 16 is normally closed by a swing opening / closing plate 21 (see FIG. 2).

  In the air conditioning system configured as described above, the cool air cooled by the cooling unit 5 in the air conditioner 3 and blown out by the blower 4 passes through the air circulation space 11, the vent holes 12, 12. The air is blown into the cool zone C, and is sucked into the server 8 by the blower 8a. After heat exchange in the server 8, the air is blown into the hot zone H. The air blown into the hot zone H is returned to the air conditioner 3 through the vent hole 15 and the air circulation space 14. As a result, the cool air from the air conditioner 3 flows from the cool zone C, which is defined as the minimum space by the section, to the hot zone H through the server 8 and cools the server 8 efficiently, so that the heat treatment efficiency is improved. .

  Further, in this air conditioning system, not all of the server-specific fans 8a, 8a,... Always rotate to generate a constant air volume, but depending on the operating state of the server 8, the rotation stops or rotates at a high speed. The ones that come out come out. Therefore, if all the cold air discharged from the air conditioner 3 returns to the air conditioner 3 again through the server 8, the air balance between the cool zone C and the hot zone H is lost, and the blowers 8a, 8a ... In addition, the operation of the blower 4 unique to the air conditioner is disturbed and the operation efficiency is lowered.

  In order to solve this, in this embodiment, in order to eliminate this inconvenience, the problem is solved by the air volume control means including the bypass vent 16 provided with the swing opening / closing plate 21. That is, in this embodiment, the air conditioner air volume Q2 sent out by the blower 4 to the air circulation space 11 is normally set to be slightly larger than the total air volume Q1 of the blowers 8a, 8a. The air vent 16 is closed by the swing opening / closing plate 21. When one of the server-specific fans 8a, 8a,..., Stops during operation of the system and the air volume Q1 becomes smaller than the air volume Q2, the hot zone H becomes negative pressure and is closed. The swing opening / closing plate 21 opens by an amount corresponding to the magnitude of the negative pressure, and bypasses the servers 8, 8... From the cool zone C to the hot zone H through the bypass vent 16 and flows cool air of the air volume Q3. Q2 = Q1 + Q3). That is, the bypass vent 16 having the swing opening / closing plate 21 has an air volume Q2 discharged from the blower 4 unique to the air conditioner to the cool zone C and an air volume discharged from the hot zone H toward the air conditioner 3 (Q1 + Q3). Are optimized so that the air volume Q2 sent from the air conditioner 3 to the cool zone C and the hot zone H and the air volume (Q1 + Q3) returned from the hot zone H to the air conditioner 3 are optimized. To do. Thereby, the operation load of the air blower 4 unique to the air conditioner and the air blowers 8a, 8a,... Unique to the server is reduced, and wasteful power consumption can be reduced to save energy.

  In the embodiment shown in FIGS. 1 to 3, the air circulation space 11 is provided on the floor 10 and the air circulation space 14 is provided on the ceiling 13, and the air circulation space 11 is cooled with the exhaust port side of the air conditioner 3. The structure in which the air circulation space 14 is connected to the inside of the zone C and the air circulation space 14 is connected to the inlet side of the air conditioner 3 and the hot zone H is disclosed, but conversely, the air circulation space 14 is exhausted from the air conditioner 3. It is good also as a structure which connected to the inlet side and the cool zone C, and connected the air circulation space 11 to the inlet side of the air conditioner 3, and the hot zone H.

  In the embodiment shown in FIGS. 1 to 3, the control unit 6 operates while fixing the rotation of the blower 4 unique to the air conditioner, and the air in the cool zone C is between the cool zone C and the hot zone H. Disclosed is a structure provided with an air volume control means provided with a bypass vent 16 with a swinging opening / closing plate 21 that can take in (atmosphere) in the hot zone H (server storage room 1a) by bypassing the server 8. However, instead of providing the bypass vent 16 with the swing opening / closing plate 21 as the air volume control means, the control unit 6 variably controls the rotation of the air blower 4 unique to the air conditioner so that it is between the cool zone C and the hot zone H. An air volume control means for optimizing the air volume balance may be provided. A preferred embodiment provided with air volume control means for optimizing the air volume balance between the cool zone C and the hot zone H will be described with reference to FIGS.

  FIG. 4 is provided with a differential pressure sensor P for detecting the pressure difference in the cool zone C and the hot zone H in place of the bypass passage 16 in the air conditioning system shown in FIGS. The control unit 6 variably controls the air volume Q2 by the blower 4 unique to the air conditioner according to the differential pressure detected at P, and shows an air conditioning system provided with an air volume control means that can always maintain (Q1 = Q2). In this air conditioning system, the air volume balance between the cool zone C and the hot zone H can be optimized by providing the air volume control means.

  5 replaces the bypass passage 16 in the air conditioning system shown in FIGS. 1 to 3 with a power consumption sensor 20 for monitoring the power consumption of the entire server-specific blower 8a installed in the server storage room 1a. The control unit 6 variably controls the air volume Q2 by the blower 4 unique to the air conditioner according to the power consumption detected by the power consumption sensor 20, and is provided with an air volume control means that can always maintain (Q1 = Q2). Indicates the system. In this air conditioning system, the air volume balance between the cool zone C and the hot zone H can be optimized by providing the air volume control means.

  FIG. 6 is provided with a temperature sensor T for detecting the temperature of the air returned from the hot zone H to the air conditioner 3 in place of the bypass passage 16 in the air conditioning system shown in FIGS. An air conditioning system is provided with an air volume control means in which the control unit 6 variably controls the air volume Q2 by the air blower 4 specific to the air conditioner according to the set temperature so that (Q1 = Q2) can always be maintained. In this air conditioning system, the air volume balance between the cool zone C and the hot zone H can be optimized by providing the air volume control means.

  In addition, in the air volume control means shown in FIGS. 4 to 6, for example, any one of the following (1) to (5) is adopted as a method in which the control unit 6 variably controls the air volume Q2 by the blower 4 unique to the air conditioner. Then, it can be easily controlled.

(1) In the system, a circuit for inverter-controlling the fan of the blower 4 unique to the air conditioner is provided, and the differential pressure detected by the control unit 6 with the differential pressure sensor P (in the case of the embodiment shown in FIG. 4), Alternatively, the inverter circuit is controlled according to the power consumption detected by the power consumption sensor 20 (in the case of the embodiment shown in FIG. 5) or the temperature detected by the temperature sensor T (in the case of the embodiment shown in FIG. 6). The air volume Q2 is variably controlled by changing the rotational speed of the fan.
(2) A circuit for controlling the voltage for rotating the fan of the blower 4 unique to the air conditioner is provided in the system, and the control unit 6 detects the differential pressure detected by the differential pressure sensor P (in the embodiment shown in FIG. 4). Or the temperature detected by the power consumption sensor 20 (in the case of the embodiment shown in FIG. 5) or the temperature detected by the temperature sensor T (in the case of the embodiment shown in FIG. 6). And the air volume Q2 is variably controlled by changing the rotational speed of the fan.
(3) A plurality of blowers 4, 4... That can be individually operated are installed in parallel in the air conditioner 3, and the differential pressure detected by the differential pressure sensor P by the control unit 6 (in the embodiment shown in FIG. 4). Case) or the power consumption detected by the power consumption sensor 20 (in the case of the embodiment shown in FIG. 5) or the temperature detected by the temperature sensor T (in the case of the embodiment shown in FIG. 6) The number of operating units is switched, and the air volume Q2 by the blower 4 is variably controlled.
(4) The blower 4 using an inlet vane as a fan is used for the air conditioner 3, and the control unit 6 detects the differential pressure detected by the differential pressure sensor P (in the case of the embodiment shown in FIG. 4) or the power consumption sensor 20 The angle of the inlet vane of the fan is adjusted according to the power consumption detected in the case of the embodiment shown in FIG. 5 or the temperature detected by the temperature sensor T (in the case of the embodiment shown in FIG. 6), The air volume Q2 by the blower 4 is variably controlled.
(5) A damper capable of adjusting the opening degree of the air flow passage is provided on the air intake side of the air flow passage of the air conditioner 3, and the control unit 6 detects the differential pressure detected by the differential pressure sensor P (FIG. 4). In the case of the embodiment shown in FIG. 6), the power consumption detected by the power consumption sensor 20 (in the case of the embodiment shown in FIG. 5), or the temperature detected by the temperature sensor T (in the case of the embodiment shown in FIG. 6). Accordingly, the opening degree of the damper is adjusted, and the air volume Q2 by the blower 4 is variably controlled.

  7 to 9 are diagrams schematically showing another embodiment in which a part of the embodiment shown in FIGS. 1 to 3 is modified. The members corresponding to those in the embodiment shown in FIGS. 1 to 3 are described with the same reference numerals, and the configuration in the embodiment shown in FIGS. 7 to 9 has a plurality of vent holes in the central portion of the server room 1. A cool zone C having 12, 12,... Is provided, and outside the cool zone C, the server storage room 1a and the hot zone H are structurally separated from the cool zone C (server room 1) so as to surround the outer periphery of the cool zone C. Are provided separately. Further, the air conditioner 3 is arranged in the hot zone H, and swinging opening / closing as a bypass passage capable of taking the air in the cool zone C into the hot zone H (server storage chamber 1a) above the server storage chamber 1a. A bypass vent 16 with a plate 21 is provided as air flow control means.

  Further, as shown in FIGS. 8 and 9, the floor 10 of the server room 1 is formed as a double floor structure with an air circulation space 11 therebetween. In the cool zone C of the floor 10, the plurality of vent holes 12, 12... Communicating with the air circulation space 11 and the cool zone C are provided adjacent to the server storage chamber 1a. Yes. The air circulation space 11 is connected to the exhaust port side of the air conditioner 3, and cold air that is cooled by the cooling unit 5 of the air conditioner 3 and discharged by the blower 4 is inside the air circulation space 11. The cool air is blown into the cool zone C through the vent holes 12, 12.

  The rack rows 9 and 9 arranged in the server storage room 1a are installed with the front surfaces of the servers 8 and 8 facing the cool zone C side and the back surfaces facing the hot zone H side. Then, each server 8, 8... Cools by sucking the cool air in the cool zone C into each server 8, 8. Heat taken from each of the servers 8 and 8 can flow smoothly into the hot zone H.

  In the air conditioning system configured as described above, the cool air cooled by the cooling unit 5 in the air conditioner 3 and blown out by the blower 4 passes through the air circulation space 11, the vent holes 12, 12. The air is blown into the cool zone C, and is sucked into the server 8 by the blower 8a. After heat exchange in the server 8, the air is blown into the hot zone H. Further, the air blown into the hot zone H is returned to the air conditioner 3. As a result, the cool air from the air conditioner 3 flows from the cool zone C, which is defined as the minimum space by the section, to the hot zone H through the server 8 and cools the server 8 efficiently, so that the heat treatment efficiency is improved. .

  Also in this embodiment, if any of the blowers 8a unique to the server 8a, 8a,... Stops during operation of the system and the air volume Q1 becomes smaller than the air volume Q2, the inside of the hot zone H becomes negative pressure. The closed swing opening / closing plate 21 is opened by an amount corresponding to the magnitude of the negative pressure, and bypasses the servers 8, 8... From the cool zone C to the hot zone H through the bypass vent 16 to adjust the air volume Q3. Flow cool air and adjust to (Q2 = Q1 + Q3). That is, the bypass vent 16 having the swing opening / closing plate 21 has an air volume Q2 discharged from the blower 4 unique to the air conditioner to the cool zone C and an air volume discharged from the hot zone H toward the air conditioner 3 (Q1 + Q3). Are optimized so that the air volume Q2 sent from the air conditioner 3 to the cool zone C and the hot zone H and the air volume (Q1 + Q3) returned from the hot zone H to the air conditioner 3 are optimized. To do. Thereby, the operation load of the air blower 4 unique to the air conditioner and the air blowers 8a, 8a,... Unique to the server is reduced, and wasteful power consumption can be reduced to save energy.

  In the embodiment shown in FIGS. 7 to 9, the control unit 6 operates while fixing the rotation of the air blower 4 unique to the air conditioner, and the air in the cool zone C is between the cool zone C and the hot zone H. Disclosed is a structure provided with an opening / closing control means provided with a bypass vent 16 with a swinging opening / closing plate 21 that can take in (atmosphere) by bypassing the server 8 into the hot zone H (server storage chamber 1a). However, instead of providing the bypass vent 16 with the swing opening / closing plate 21 as the air volume control means, the control unit 6 variably controls the rotation of the air blower 4 unique to the air conditioner so that it is between the cool zone C and the hot zone H. An air volume control means for optimizing the air volume balance may be provided. A preferred embodiment provided with air volume control means for optimizing the air volume balance between the cool zone C and the hot zone H will be described with reference to FIGS.

  FIG. 10 is provided with a differential pressure sensor P for detecting the pressure difference in the cool zone C and the pressure in the hot zone H instead of the bypass passage 16 in the air conditioning system shown in FIGS. The control unit 6 variably controls the air volume Q2 by the blower 4 unique to the air conditioner according to the differential pressure detected at P, and shows an air conditioning system provided with an air volume control means that can always maintain (Q1 = Q2). In this air conditioning system, the air volume balance between the cool zone C and the hot zone H can be optimized by providing the air volume control means.

  FIG. 11 is provided with a power consumption sensor 20 for monitoring the power consumption of the entire server-specific blower 8a installed in the server storage room 1a, instead of the bypass passage 16 in the air conditioning system shown in FIGS. The control unit 6 variably controls the air volume Q2 by the blower 4 unique to the air conditioner according to the power consumption detected by the power consumption sensor 20, and is provided with an air volume control means that can always maintain (Q1 = Q2). Indicates the system. In this air conditioning system, the air volume balance between the cool zone C and the hot zone H can be optimized by providing the air volume control means.

  FIG. 12 is provided with a temperature sensor T for detecting the temperature of the air returned from the hot zone H to the air conditioner 3 in place of the bypass passage 16 in the air conditioning system shown in FIGS. An air conditioning system is provided with an air volume control means in which the control unit 6 variably controls the air volume Q2 by the blower 4 unique to the air conditioner according to the detected temperature so that (Q1 = Q2) can always be maintained. In this air conditioning system, the air volume balance between the cool zone C and the hot zone H can be optimized by providing the air volume control means.

  In the air volume control means shown in FIGS. 10 to 12, as a method for the control unit 6 to variably control the air volume Q <b> 2 by the blower 4 unique to the air conditioner, for example, any of the following (6) to (10) It is possible to control easily if this is adopted.

(6) In the system, a circuit for inverter-controlling the fan of the blower 4 unique to the air conditioner is provided, and the differential pressure detected by the control unit 6 with the differential pressure sensor P (in the case of the embodiment shown in FIG. 10), Alternatively, the inverter circuit is controlled according to the power consumption detected by the power consumption sensor 20 (in the case of the embodiment shown in FIG. 11) or the temperature detected by the temperature sensor T (in the case of the embodiment shown in FIG. 12). The air volume Q2 is variably controlled by changing the rotational speed of the fan.
(7) A circuit for controlling the voltage for rotating the fan of the blower 4 unique to the air conditioner is provided in the system, and the control unit 6 detects the differential pressure detected by the differential pressure sensor P (in the embodiment shown in FIG. 10). Or the temperature detected by the power consumption sensor 20 (in the case of the embodiment shown in FIG. 11) or the temperature detected by the temperature sensor T (in the case of the embodiment shown in FIG. 12). And the air volume Q2 is variably controlled by changing the rotational speed of the fan.
(8) A plurality of blowers 4, 4... That can be individually operated are installed in parallel in the air conditioner 3, and the differential pressure detected by the control unit 6 with the differential pressure sensor P (in the embodiment shown in FIG. 10). Case), or the power consumption detected by the power consumption sensor 20 (in the case of the embodiment shown in FIG. 11) or the temperature detected by the temperature sensor T (in the case of the embodiment shown in FIG. 12). The number of operating units is switched, and the air volume Q2 by the blower 4 is variably controlled.
(9) The blower 4 using an inlet vane as a fan is used for the air conditioner 3, and the control unit 6 detects the differential pressure detected by the differential pressure sensor P (in the case of the embodiment shown in FIG. 10) or the power consumption sensor 20 The angle of the inlet vane of the fan is adjusted according to the power consumption detected in the case of the embodiment shown in FIG. 11 or the temperature detected by the temperature sensor T (in the case of the embodiment shown in FIG. 12), The air volume Q2 by the blower 4 is variably controlled.
(10) A damper capable of adjusting the opening degree of the air flow passage is provided on the air intake side of the air flow passage of the air conditioner 3, and the control unit 6 detects the differential pressure detected by the differential pressure sensor P (FIG. 10). In the case of the embodiment shown in FIG. 12), the power consumption detected by the power consumption sensor 20 (in the case of the embodiment shown in FIG. 11), or the temperature detected by the temperature sensor T (in the case of the embodiment shown in FIG. 12). Accordingly, the opening degree of the damper is adjusted, and the air volume Q2 by the blower 4 is variably controlled.

  FIGS. 13 to 15 are diagrams schematically showing still another embodiment in which a part of the embodiment shown in FIGS. 1 to 3 is modified. The members corresponding to the configuration of the embodiment shown in FIGS. 1 to 3 are described with the same reference numerals. The configuration of the embodiment shown in FIGS. A server storage room 1a that is structurally separated from the server room 1 by a partition 2 is provided, and a hot zone H including the server storage room 1a and a cool zone C not including the server storage room 1a are provided in the server room 1. It is divided into and. In addition, the server room 1 is structurally separated from the server room 1 and the server storage room 1a by the tool partition 2, and a blow-out hole 17 is provided along the side surface of the server storage room 1a. Yes.

  The pit chamber 17 is a space that is blown from the floor 10 to the ceiling 13, and the lower side communicates with the air circulation space 11 provided below the floor 10. In addition, a communication hole 18 that communicates between the server storage chamber 1a and the pit chamber 17 is provided in the left and right central portion of the partition wall 17a that partitions the server storage chamber 1a. The air conditioner 3 is disposed with the air inlet facing the front.

  In the embodiment shown in FIGS. 1 to 3, the air circulation space 14 is provided between the ceiling 13 to form a double structure. However, in the structure in this embodiment shown in FIGS. The distribution space 14 is not provided.

In the air conditioning system configured as described above, the cool air cooled by the cooling unit 5 in the air conditioner 3 and blown out by the blower 4 passes through the air circulation space 11, the vent holes 12, 12. The air is blown into the cool zone C, and is sucked into the server 8 by the blower 8a. After heat exchange in the server 8, the air is blown into the hot zone H. The air blown into the hot zone H is returned to the air conditioner 3 through the communication hole 18 of the partition wall 17a. As a result, the cool air from the air conditioner 3 flows from the cool zone C, which is defined as the minimum space by the section, to the hot zone H through the server 8 and cools the server 8 efficiently, so that the heat treatment efficiency is improved. .

  Also in this embodiment, if any of the blowers 8a unique to the server 8a, 8a,... Stops during operation of the system and the air volume Q1 becomes smaller than the air volume Q2, the inside of the hot zone H becomes negative pressure. The closed swing opening / closing plate 21 is opened by an amount corresponding to the magnitude of the negative pressure, and bypasses the servers 8, 8... From the cool zone C to the hot zone H through the bypass vent 16 to adjust the air volume Q3. Flow cool air and adjust to (Q2 = Q1 + Q3). That is, the bypass vent 16 having the swing opening / closing plate 21 has an air volume Q2 discharged from the blower 4 unique to the air conditioner to the cool zone C and an air volume discharged from the hot zone H toward the air conditioner 3 (Q1 + Q3). Are optimized so that the air volume Q2 sent from the air conditioner 3 to the cool zone C and the hot zone H and the air volume (Q1 + Q3) returned from the hot zone H to the air conditioner 3 are optimized. To do. Thereby, the operation load of the air blower 4 unique to the air conditioner and the air blowers 8a, 8a,... Unique to the server is reduced, and wasteful power consumption can be reduced to save energy.

  In the embodiment shown in FIGS. 13 to 15, the control unit 6 operates while fixing the rotation of the air blower 4 unique to the air conditioner, and the air in the cool zone C is between the cool zone C and the hot zone H. Although a structure has been disclosed in which a bypass vent 16 with a swing opening / closing plate 21 capable of bypassing and taking in the server 8 into the hot zone H (server storage chamber 1a) is provided, the swing opening / closing is disclosed. Instead of providing the bypass vent 16 with the plate 21 as the air flow control means, the controller 6 variably controls the rotation of the air blower 4 unique to the air conditioner to optimize the air flow balance between the cool zone C and the hot zone H. An air volume control means for converting may be provided. A preferred embodiment provided with an air volume control means for optimizing the air volume balance between the cool zone C and the hot zone H will be described with reference to FIGS.

  FIG. 16 is provided with a differential pressure sensor P for detecting the pressure difference in the cool zone C and the hot zone H in place of the bypass passage 16 in the air conditioning system shown in FIGS. The control unit 6 variably controls the air volume Q2 by the blower 4 unique to the air conditioner according to the differential pressure detected at P, and shows an air conditioning system provided with an air volume control means that can always maintain (Q1 = Q2). In this air conditioning system, the air volume balance between the cool zone C and the hot zone H can be optimized by providing the air volume control means.

  FIG. 17 is provided with a power consumption sensor 20 for monitoring the power consumption of the entire server-specific blower 8a installed in the server storage room 1a, instead of the bypass passage 16 in the air conditioning system shown in FIGS. The control unit 6 variably controls the air volume Q2 by the blower 4 unique to the air conditioner according to the power consumption detected by the power consumption sensor 20, and is provided with an air volume control means that can always maintain (Q1 = Q2). Indicates the system. In this air conditioning system, the air volume balance between the cool zone C and the hot zone H can be optimized by providing the air volume control means.

  FIG. 18 is provided with a temperature sensor T for detecting the temperature of the air returned from the hot zone H to the air conditioner 3 in place of the bypass passage 16 in the air conditioning system shown in FIGS. An air conditioning system is provided with an air volume control means in which the control unit 6 variably controls the air volume Q2 by the air blower 4 specific to the air conditioner according to the set temperature so that (Q1 = Q2) can always be maintained. In this air conditioning system, the air volume balance between the cool zone C and the hot zone H can be optimized by providing the air volume control means.

  In addition, in the air volume control means shown in FIGS. 16 to 18, for example, any of the following (11) to (16) can be used as a method in which the controller 6 variably controls the air volume Q <b> 2 by the blower 4 unique to the air conditioner. It is possible to control easily if this is adopted.

(11) In the system, a circuit for inverter-controlling the fan of the blower 4 unique to the air conditioner is provided, and the differential pressure detected by the control unit 6 with the differential pressure sensor P (in the case of the embodiment shown in FIG. 16), Alternatively, the inverter circuit is controlled according to the power consumption detected by the power consumption sensor 20 (in the case of the embodiment shown in FIG. 17) or the temperature detected by the temperature sensor T (in the case of the embodiment shown in FIG. 18). The air volume Q2 is variably controlled by changing the rotational speed of the fan.
(12) A circuit for controlling the voltage for rotating the fan of the blower 4 unique to the air conditioner is provided in the system, and the control unit 6 detects the differential pressure detected by the differential pressure sensor P (in the embodiment shown in FIG. 16). Or the temperature detected by the power consumption sensor 20 (in the case of the embodiment shown in FIG. 17) or the temperature detected by the temperature sensor T (in the case of the embodiment shown in FIG. 18). And the air volume Q2 is variably controlled by changing the rotational speed of the fan.
(13) A plurality of blowers 4, 4... That can be operated individually are installed in parallel in the air conditioner 3, and the differential pressure detected by the control unit 6 with the differential pressure sensor P (in the embodiment shown in FIG. 16). Case), or the power consumption detected by the power consumption sensor 20 (in the case of the embodiment shown in FIG. 17) or the temperature detected by the temperature sensor T (in the case of the embodiment shown in FIG. 18). The number of operating units is switched, and the air volume Q2 by the blower 4 is variably controlled.
(14) The blower 4 using an inlet vane as a fan is used for the air conditioner 3, and the control unit 6 detects the differential pressure detected by the differential pressure sensor P (in the case of the embodiment shown in FIG. 16) or the power consumption sensor 20 The angle of the inlet vane of the fan is adjusted according to the power consumption detected in the case of the embodiment shown in FIG. 17 or the temperature detected by the temperature sensor T (in the case of the embodiment shown in FIG. 18), The air volume Q2 by the blower 4 is variably controlled.
(15) A damper capable of adjusting the opening degree of the airflow passage is provided on the air intake side of the airflow passage of the air conditioner 3, and the control unit 6 detects the differential pressure detected by the differential pressure sensor P (FIG. 16). In the case of the embodiment shown in FIG. 18), the power consumption detected by the power consumption sensor 20 (in the case of the embodiment shown in FIG. 17), or the temperature detected by the temperature sensor T (in the case of the embodiment shown in FIG. 18). Accordingly, the opening degree of the damper is adjusted, and the air volume Q2 by the blower 4 is variably controlled.

  It should be noted that the present invention can be variously modified without departing from the spirit of the present invention, and the present invention naturally extends to the modified ones.

1 is a plan view schematically showing a first embodiment of an air conditioning system for a server room according to the present invention. XX sectional drawing of FIG. The YY sectional view taken on the line of FIG. The top view which simplifies and shows typically the modification in a 1st Example system. The top view which simplifies and shows typically the another modification in a 1st Example system. The top view which simplifies and shows typically the another modification in a 1st Example system. The top view which simplifies and shows typically 2nd Example of the air conditioning system of the server room which concerns on this invention. XX sectional drawing of FIG. YY sectional view taken on the line of FIG. The top view which simplifies and shows typically the modification in a 2nd Example system. The top view which simplifies and shows typically the another modification in a 2nd Example system. The top view which simplifies and shows typically the another modification in a 2nd Example system. The top view which simplifies and shows typically 3rd Example of the air conditioning system of the server room which concerns on this invention. XX sectional drawing of FIG. FIG. 14 is a sectional view taken along line YY in FIG. 13. The top view which simplifies and shows typically the modification in a 2nd Example system. The top view which simplifies and shows typically the another modification in a 2nd Example system. The top view which simplifies and shows typically the another modification in a 2nd Example system. The top view which simplifies and shows typically an example of the conventional air conditioning system. The longitudinal cross-sectional side view which shows an example of the conventional air conditioning system simply and typically.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Server room 1a Server storage room 2 Tool partition 3 Air conditioner 4 Air blower peculiar to air conditioner 5 Cooling part 6 Control part 7 Rack row 8 Server 8a Server specific blower 9 Rack 10 Floor 11 Air distribution space 12 Vent hole 13 Ceiling 14 Air Distribution space 15 Ventilation hole 16 Pipe hole for ventilation (air flow control means)
17 Pothole chamber 17a Partition wall 18 Communication hole 20 Power consumption sensor 21 Swing opening / closing plate C Cool zone H Hot zone P Differential pressure sensor T Temperature sensor

Claims (14)

In an air conditioning system that cools a space in a server room in which a plurality of racks in which a plurality of servers are arranged in a vertical direction are arranged in a row by an air conditioner,
A server storage chamber in which the row of racks is stored in the server chamber is structurally separated from the server chamber, and the server chamber is formed outside the server storage chamber and a hot zone formed together with the server storage chamber. It is divided into cool zones and
A server-specific blower that takes the atmosphere in the cool zone into the server, and discharges the atmosphere in the server heated by exchanging heat in the server into the hot zone;
The air blower unique to the air conditioner that sucks the air on the hot zone side into the air conditioner and discharges the air cooled in the air conditioner to the cool zone side, and the air blower unique to the air conditioner is larger in air volume than the fan unique to the server Is small, the circulation fan installed in parallel with the air conditioner,
An air volume control means for controlling the air volume discharged from the blower and the circulation fan unique to the air conditioner through the cool zone into the hot zone and the air volume returned from the hot zone to the air conditioner;
An air conditioning system for a server room, comprising:   The air volume control means opens between the hot zone and the cool zone according to the magnitude of the negative pressure when the hot zone becomes negative pressure, bypasses the server and bypasses the cool zone 2. An air conditioning system for a server room according to claim 1, further comprising an openable and closable bypass passage capable of taking the atmosphere inside the hot zone.   The server room has a double floor and ceiling structure each having an air circulation space therebetween, and the one air circulation space serves as a cold air discharge port of the air conditioner and an air intake port of the cool zone. 3. The server room air conditioning system according to claim 2, wherein the other air circulation space communicates with an exhaust port of the hot zone and an air intake port of the air conditioner.   3. The server room air conditioning system according to claim 2, wherein the cool zone is provided in a central portion of the server room, and the server storage room is provided so as to surround an outer periphery of the cool zone.   The server room has a double floor or ceiling structure with an air circulation space therebetween, and the air circulation space communicates with the cold air discharge port of the air conditioner and the air intake port of the cool zone, respectively. 3. The server room air conditioning system according to claim 2, wherein an air intake port of the air conditioner is communicated with the hot zone.   The server room has a double floor or / and ceiling structure with an air circulation space in between, and is structurally separated from the server storage room and vertically moved along the side of the server storage room. A blow-through pit hole chamber that extends in the direction and communicates with the air circulation space on the upper side and / or the lower side is cooled by introducing the atmosphere in the hot zone into the pit hole chamber. 3. The server room air conditioning system according to claim 2, wherein the air conditioner is provided in the zone through the air circulation space.   The air volume control means includes a differential pressure sensor for detecting a pressure difference in the cool zone and a pressure in the hot zone, and an air volume by a blower unique to the air conditioner according to the differential pressure detected by the differential pressure sensor The server room air conditioning system according to claim 1, wherein the air conditioning system is variably controlled.   The air volume control means includes a power consumption sensor that monitors the power consumption of the server body, and variably controls the air volume of the air conditioner-specific air blower according to the power consumption detected by the power consumption sensor. The server room air conditioning system according to claim 1.   The air volume control means includes a temperature sensor that detects the temperature of air returned from the hot zone to the air conditioner, and variably controls the air volume of the air conditioner specific air blower according to the temperature detected by the temperature sensor. The server room air conditioning system according to claim 1.   10. The server according to claim 7, 8 or 9, wherein the air volume control means performs inverter control of a fan of the air blower unique to the air conditioner to vary the rotational speed of the fan, and variably controls the air volume of the air blower. Room air conditioning system.   10. The air volume control means controls the voltage for rotating the fan of the air conditioner specific fan to vary the rotational speed of the fan, and variably controls the air volume of the air blower. The server room air conditioning system described.   The air conditioner is configured by installing in parallel a plurality of individually operable fans in the ventilation path, and the air volume control means switches the number of operating fans to variably control the air volume by the fans. The server room air conditioning system according to claim 7, 8 or 9.   10. The air conditioner comprises a blower having an inlet vane, and the air volume control means adjusts the opening degree of the inlet vane of the blower to variably control the air volume by the blower. Server room air conditioning system.   9. The air conditioner includes a damper capable of adjusting an opening degree of a ventilation path, and the air volume control means adjusts the opening degree of the damper to variably control the air volume by the blower. 9. The server room air conditioning system according to 9.

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