JP5634703B2 - Air conditioning system for heat generation equipment storage room - Google Patents

Description

  The present invention relates to a technique of an air conditioning system for a heat generating device accommodation room.

  In recent years, in data centers in which racks loaded with IT (Information Technology) devices such as servers are installed, the amount of heat generated has increased due to the increase in heat generation of IT devices, and the power consumption of the data center has increased. Therefore, in the operation of the data center, it is necessary to sufficiently arrange the air conditioning in the data center.

  As a cooling technique in a data center, there is a technique for distinguishing between cold aisle and hot aisle (see FIG. 1). A cold aisle is a space through which cool air from an air conditioner passes among spaces separated by a row of racks that accommodate IT equipment. A hot aisle is a space that is separated by a rack among spaces separated by a row of racks. It is a space through which exhaust heat from the accommodated IT equipment passes. In addition, there is a technique for distinguishing between cold aisle and hot aisle, and further arranging an air conditioner at an arbitrary position in a row of racks that accommodate IT equipment (see FIG. 2). Such a technique is also referred to as an InRow system. Air conditioners arranged in a row of racks suck and cool hot aisle air, and supply the cooled air to the cold aisle.

  Further, for example, in Patent Document 1, a blocking body is detachably provided between the upper surfaces of the rack groups on both sides of the passage, so that the air discharged from the upper surface or the rear surface of the rack groups is prevented from being circulated to the front surface side. Techniques to do this are disclosed. Japanese Patent Laid-Open No. 2004-228561 measures the static pressure and wind speed of cold air in an air supply chamber formed under the floor, and based on the measured static pressure and wind speed, a blowing device in the vicinity of a region where the measured value is equal to or less than a threshold value. A technique is disclosed in which the cool air in the air supply chamber is blown into the indoor space by operating the air. Patent Document 3 discloses a technique in which a computer unit is provided with a blower that blows out air sucked from a lower space in an indoor space. Patent Document 4 discloses a technique in which racks in which electronic devices are stored are arranged in a straight line, and a blower rack is arranged in a row of the racks.

Japanese Patent No. 3833515 JP 2008-185271 A JP 2005-172309 A JP 2009-109045 A

As a cooling technique in a data center, a technique for distinguishing cold aisle and hot aisle is known, but in such a technique, exhaust heat from an IT device (for example, a server) accommodated in a rack flows into the cold aisle. Prevention of thermal contamination is an important issue. One of the factors that cause exhaust heat to flow into the cold aisle is air flow due to an imbalance between the amount of cold air supplied to the cold aisle and the amount of exhaust heat exhausted to the hot aisle by the IT equipment fan. It is done. As a technique for suppressing the air flow and suppressing the exhaust heat from flowing into the cold aisle, for example, a technique in which a blocking body is detachably provided between the upper surfaces of the rack group is known. However, such a technique only suppresses part of the exhaust heat flowing into the cold aisle, and a technique for more effectively suppressing the flow of exhaust heat into the cold aisle is required. As another technique for suppressing air flow and suppressing exhaust heat from flowing into the cold aisle, a technique for arranging an air conditioner at an arbitrary position in a row of racks that accommodate IT equipment is also known. However, such technology also only suppresses a part of the exhaust heat from flowing into the cold aisle. Moreover, the technique which concerns can anticipate the further effective air conditioning by devising the control method of the operation | movement of an air conditioner.

  In view of the above problems, the present invention relates to an air conditioning technology for air conditioning a heat generating device storage chamber in which a housing portion for storing a heat generating device is arranged, and to provide a technology capable of cooling the heat generating device more effectively. Let it be an issue.

  In order to solve the above-described problem, the present invention provides an air conditioner at the end of a row-shaped storage unit (for example, a rack group) that stores heat generating devices, and a space through which exhaust heat exhausted from the heat generating devices passes. By enclosing, the space through which the exhaust heat passes is separated from the heat generating device storage chamber in which the storage unit is installed.

  Specifically, the present invention is an air conditioning system for a heat generating device storage chamber that performs air conditioning of a heat generating device storage chamber in which a plurality of row-shaped storage portions for storing heat generating devices are arranged, and one end portion or both end portions of the storage portion Of the passage between the two housing portions, the air sucked from the exhaust heat passage through which the exhaust heat exhausted from the heat generating device passes is cooled to a cool air passage which is a passage adjacent to the exhaust heat passage An air conditioner that feeds air, and a blocking unit that covers the exhaust heat passage, the blocking unit blocking the exhaust heat of the exhaust heat passage from flowing into the internal space covered by the blocking unit.

  In this invention, the interruption | blocking part covers the exhaust heat channel | path, and the exhaust heat channel | path is parted from the heat generating apparatus accommodation chamber in which an accommodating part is provided. In other words, the exhaust heat passage covered with the blocking portion is independent of the heat generating device storage chamber in which the storage portion is provided as an internal space. As a result, according to the present invention, the exhaust heat of the exhaust heat passage can be reliably blocked from flowing into the heat generating device accommodation chamber. That is, since the air (cold air) cooled by the air conditioner flows through the cold air passage, the heat generating device can be cooled more effectively than in the past. Further, by providing the air conditioners at the end portions in the row shape, the flow direction of the exhaust heat in the exhaust heat passage is stabilized, and the intake can be efficiently performed.

For example, a rack group in which racks for storing heat-generating devices including IT devices such as servers are arranged in a row in the storage unit, and items that are individually loaded in normal racks such as servers and storage are packaged in advance. A general-purpose device group in which general-purpose devices called mainframes are arranged in a line is included.

  Here, in this invention, the interruption | blocking part can be comprised by the edge part interruption | blocking part which interrupts | blocks the edge part of an exhaust heat passage, and the upper interruption | blocking part which interrupts | blocks the upper part of an exhaust heat passage. In other words, the end blocking portion blocks the front and rear of the exhaust heat passage. The end blocking portion can be provided with an openable / closable door that goes to and from the exhaust heat passage at one or both of the ends. Before the exhaust heat passage means the front side (one end) of the exhaust heat passage in the longitudinal direction, and after the exhaust heat passage means the rear side (the other end) in the longitudinal direction of the exhaust heat passage.

  Further, the present invention provides a heating device housing chamber pressure detection unit that detects a heating device housing chamber pressure that is a pressure in the heating device housing chamber, and a passage pressure detection unit that detects a passage pressure that is a pressure in the exhaust heat passage. And an air conditioning control unit that adjusts the air volume of the air conditioner so that the differential pressure between the heat generating device housing chamber pressure and the passage pressure is constant. When the pressure in the exhaust heat passage becomes higher than the pressure in the heat generating device accommodation chamber, the exhaust heat in the exhaust heat passage easily flows out of the exhaust heat passage. By providing the air conditioning control unit and making the heat generating device accommodation chamber pressure and the passage pressure constant, the exhaust heat can be more reliably confined in the exhaust heat passage.

Further, in the present invention, the blocking portion includes an end blocking portion that blocks an end of the exhaust heat passage,
An upper blocking portion that blocks an upper portion of the exhaust heat passage, the end blocking portion has a door at one or both of the end blocking portions, and the air conditioning system detects opening and closing of the door The air-conditioning control unit maintains the operation state of the air conditioner when it is determined that the door is open based on the detection result of the open / close detection unit. You may make it do. Thereby, when the door is closed, a sudden increase in pressure in the internal space can be suppressed.

  Here, in the present invention, the air conditioner is higher than the height of the housing portion, and the upper end of the air inlet that sucks the exhaust heat is higher than the height of the housing portion, and the area of the air inlet is A discharge port that discharges exhaust heat discharged from the heat-generating device to be stored in a single storage unit that constitutes a row-shaped storage unit, and is larger than the area of the discharge port facing the exhaust exhaust heat passage. May be. Thereby, drift and the stagnation of the air in the exhaust heat passage can be prevented. Further, the blocking part can be formed on, for example, the top plate of the air conditioner, and the blocking part can be easily supported.

  ADVANTAGE OF THE INVENTION According to this invention, the technique which can cool a heat generating apparatus more effectively can be provided regarding the air conditioning technique which air-conditions the heat generating apparatus accommodation chamber in which the accommodating part which accommodates a heat generating apparatus is arrange | positioned.

An example of the structure of the conventional air conditioning system is shown. The other example of the structure of the conventional air conditioning system is shown. The perspective view of the composition of the air-conditioning system concerning a first embodiment is shown. The top view of the structure of the air conditioning system which concerns on 1st embodiment is shown. The side view of the composition of the air-conditioning system concerning a first embodiment is shown. The front view of the structure of the air conditioning system which concerns on 1st embodiment is shown. The functional block diagram of the air-conditioning control part of the air conditioning system which concerns on 1st embodiment is shown. The flowchart of the 1st differential pressure control is shown. The flowchart of the 2nd differential pressure control is shown. The side view of the structure of the air conditioning system which concerns on 2nd embodiment is shown. The front view of the structure of the air conditioning system which concerns on 2nd embodiment is shown. Sectional drawing of the structure of the air conditioning system which concerns on 2nd embodiment is shown. The perspective view of the composition of the air-conditioning system concerning a third embodiment is shown. The front view of the structure of the air conditioning system which concerns on 3rd embodiment is shown. The front view of the structure of the air conditioning system which concerns on the modification of 3rd embodiment is shown.

Next, an embodiment with the present invention will be described with reference to the drawings. In the following description, a case where the air conditioning system for a heat generating device accommodation room according to the present invention is applied to a data center where a rack loaded with IT devices such as servers is installed will be described as an example.

[First embodiment]
<Configuration>
As shown in FIGS. 3 to 6, the air conditioning system 100 according to the first embodiment includes a machine room 1, a rack group 2, a hot aisle 3, a cold aisle 4, an air conditioner 5, an upper blocking unit 6, and an end blocking unit. 7. A door 8 is provided.

The machine room 1 corresponds to the heat generating device accommodation chamber of the present invention, and includes a floor 11, a ceiling 12, and a wall 13, and has a space inside. In this space, that is, the machine room 1, a rack group 2 (corresponding to the storage portion of the present invention) installed on the floor 11 is installed. 3 and 4, four rack groups 2 are provided, but the number of rack groups 2 is not limited.

  The rack group 2 accommodates servers. In the first embodiment, one rack group 2 is configured by connecting 10 racks in a row. However, the number of racks constituting the rack group 2 can be appropriately designed according to the scale of the machine room 1. Moreover, each rack which comprises the rack group 2 is the same shape and the same dimension. The dimension in the row direction of each rack can be changed as appropriate, but the depth dimension (the dimension in the direction orthogonal to the row direction) is preferably the same. By making the depth dimensions the same, the surfaces exposed to the hot aisle 3 and the cold aisle 4 are flush with each other, and the flow of air can be made smooth. In the first embodiment, the rack group 2 accommodates servers, but can accommodate heat generating equipment (IT equipment) that draws in cold air from one side and exhausts exhaust heat from the other side. The rack group 2 is installed in the hot aisle 3 so that the exhaust surfaces of the adjacent rack groups 2 face each other. In other words, in the cold aisle 4, the intake surfaces of the rack group 2 are also opposed to each other. The rack group 2 can be configured by a mesh type that can take in cold air (intake air) from one side surface facing the cold aisle 4 side and exhaust exhaust heat from the other side surface facing the hot aisle 3 side. Unlike servers with cooling fans, if the heat generating equipment housed in the rack does not have a cooling fan, install a separate fan to encourage cooling air supply and exhaust heat exhaustion. May be.

  The hot aisle 3 corresponds to the exhaust heat passage of the present invention, is formed between the exhaust surfaces of the adjacent rack group 2, and exhaust heat from the server flows. In the air conditioning system 100 according to the first embodiment, the periphery of the hot aisle 3 is covered with the rack group 2, the floor 11, the end blocking unit 7, and the upper blocking unit 6, and the hot aisle 3 is connected to the machine room 1. Is a divided and closed space. This closed space corresponds to the internal space of the present invention, and is referred to as a cut-off exhaust passage 9 in the following description. Details of the shutoff exhaust passage 9 will be described later.

  The cold aisle 4 corresponds to a cold air passage of the present invention, is formed between the intake surfaces of the adjacent rack groups 2, and cool air supplied from the air conditioner 5 flows therethrough.

  The air conditioners 5 are provided at both ends of the rack group 2, take in exhaust heat exhausted from the server from the hot aisle 3, cool it, and send it to the cold aisle 4. By arranging the air conditioners 5 at both ends of the rack group 2, the flow direction of the exhaust heat in the hot aisle 3 is stabilized and the air intake is efficiently performed as compared with the case where the air conditioners are arranged at the center of the rack group 2. It becomes possible to do. The air conditioner 5 has an intake port on the hot aisle 3 side and an air outlet on the cold aisle 4 side. The temperature gradient can be improved by directing the intake port upward and directing the air outlet downward. In the first embodiment, the height and width of the air conditioner 5 are substantially the same as the height and width of the rack group 2. Examples of the air conditioner 5 include a package type air conditioner that cools air by compressing and expanding a refrigerant to change the phase. In this case, the refrigerant may be either a fluorocarbon refrigerant or a water refrigerant. In addition, the air conditioner 5 should just be what can cool waste heat, and can replace the said air conditioner and can use the existing technique suitably.

  The upper blocking unit 6 covers the upper part of the hot aisle 3 and blocks exhaust heat from flowing into the cold aisle 4 from the upper part of the hot aisle 3. In FIG. 3, the height of the air conditioner 5 is the same as the height of the rack group 2, and the upper blocking unit 6 is disposed between the upper surface of the two groups of rack groups 2 and the air conditioner 5 facing each other across the hot aisle 3. It is comprised by passing and fixing a shape member. That is, in the first embodiment, the upper blocking portion 6 is connected to the upper surfaces of the adjacent rack groups 2. The upper blocking portion 6 extends to the upper surface of the air conditioner 5 provided at the end, and completely covers the upper portion of the hot aisle 3 from one end to the other end of the hot aisle 3.

The end blocking unit 7 covers both ends of the hot aisle 3 and blocks exhaust heat from flowing into the cold aisle 4 from both ends of the hot aisle 3. In 1st embodiment, the air conditioner 5 is installed in the both ends of the rack group 2, and the edge part interruption | blocking part 7 is connected with the side surfaces of the adjacent air conditioner 5. FIG. Further, in the first embodiment, the door 8 is provided at the end blocking portion 7 for a person to go into and out of the hot aisle 3. The door 8 is rotatable by a hinge provided at the end blocking portion 7.

  The shutoff exhaust passage 9 is a closed space surrounded by the upper shutoff portion 6, the end shutoff portion 7, the floor 11, and the exhaust surface of the rack group 2 described above. In the air conditioning system 100 according to the first embodiment, the exhaust heat exhausted from the server is confined in the shut-off exhaust passage 9 which is a closed space, so that the exhaust heat flows into the cold aisle 4 is blocked. .

(Differential pressure control system)
In addition to the configuration described above, the air conditioning system 100 according to the first embodiment includes the pressure in the shut-off exhaust passage 9 (corresponding to the passage pressure of the present invention) and the pressure in the machine room 1 (accommodating the heat generating device of the present invention). The pressure difference control system 150 is made constant (see FIG. 7). The differential pressure control system 150 includes a shut-off exhaust path pressure sensor 206, a machine room pressure sensor 207, an open / close sensor 208, and an air conditioning control unit 200.

  The shutoff exhaust passage pressure sensor 206 is installed in the shutoff exhaust passage 9 and detects the pressure in the shutoff exhaust passage 9. The shutoff exhaust passage pressure sensor 206 is electrically connected to the air conditioning control unit 200, and shutoff exhaust passage pressure information related to the pressure in the shutoff exhaust passage detected by the shutoff exhaust passage pressure sensor 206 is sent to the air conditioning control unit 200. Sent.

  The machine room pressure sensor 207 is installed in the machine room 1 and detects the pressure in the machine room 1. The machine room pressure sensor 207 is electrically connected to the air conditioning control unit 200, and machine room pressure information related to the pressure in the machine room detected by the machine room pressure sensor 207 is sent to the air conditioning control unit 200. Instead of the shut-off exhaust path pressure sensor 206 and the machine room pressure sensor 207, a differential pressure sensor that detects a pressure difference between the shut-off exhaust path 9 and the machine room 1 may be used. As the differential pressure sensor, an existing one can be used, and the differential pressure sensor can be provided, for example, in the upper blocking portion 6 that is a boundary between the blocking exhaust passage 9 and the machine room 1.

  The open / close sensor 208 is installed in the vicinity of the door 8 installed in the end blocking unit 7 and detects the open / closed state of the door 8. The opening / closing sensor 208 is electrically connected to the air conditioning control unit 200, and the opening / closing information regarding the opening / closing state of the door detected by the opening / closing sensor 208 is sent to the air conditioning control unit 200.

The air conditioning control unit 200 controls the air conditioner 5 based on the shut-off exhaust passage pressure information, machine room pressure information, and opening / closing information, and makes the differential pressure between the pressure in the shut-off exhaust passage 9 and the pressure in the machine room 1 constant. Let Specifically, the air conditioning controller 200 determines that the pressure in the shut-off exhaust passage 9 and the pressure in the machine room 1 are substantially the same, or the pressure in the shut-off exhaust passage 9 is somewhat lower than the pressure in the machine room 1. The air conditioner 5 is controlled. The air conditioning control unit 200 is realized by a computer having a CPU (Central Processing Unit) 201 and a memory 202, and a program executed on the computer (see FIG. 7). More specifically, the air-conditioning control unit 200 includes functional units including an information acquisition unit 203 that acquires cut-off exhaust passage pressure information, machine room pressure information, and opening / closing information, a determination unit 204, and an execution unit 205. When the unit is executed by the computer, the air volume adjustment of the cold air sent from the air conditioner 5 is realized, and as a result, the differential pressure is kept constant. When there are a plurality of shut-off exhaust passages 9, the air conditioners 5 are controlled in parallel so that the differential pressure between the pressures in the plurality of shut-off exhaust passages 9 and the pressure in the machine room 1 is made constant.

(First differential pressure control)
Here, FIG. 8 shows a first differential pressure control flow executed by the differential pressure control system 150. In step S01, the information acquisition unit 203 acquires cutoff exhaust passage pressure information and machine room pressure information. Subsequently, in step S02, the determination unit 204 determines that the pressure difference between the pressure in the shut-off exhaust passage 9 and the pressure in the machine room 1 is within a predetermined range based on the shut-off exhaust passage pressure information and the machine room pressure information. Judge if there is. The predetermined range can be obtained in advance based on the size of the machine room, the number of installed servers, the amount of heat exhausted from the server, and the like. If the differential pressure is within a predetermined range, the process of step S01 is executed again. On the other hand, if the differential pressure is outside the predetermined range, the process proceeds to step S03.

  In step S03, the execution unit 205 controls the air conditioner 5 so that the pressure difference is within a predetermined range. When the pressure in the shut-off exhaust passage 9 is high, the execution unit 205 reduces the output of the air conditioner 5, for example, and reduces the amount of cool air sent to the machine room 1. When the pressure in the machine room 1 is high, the execution unit 205 increases the output of the air conditioner 5, for example, and increases the amount of cool air sent to the machine room 1. When the control of the air conditioner 5 is completed, the process returns to step S01 again.

(Second differential pressure control)
FIG. 9 shows a second differential pressure control flow executed by the differential pressure control system 150. The second differential pressure control can be executed together with the above-described first differential pressure control. In step S11, the information acquisition unit 203 acquires open / close information. Subsequently, in step S12, the determination unit 204 determines whether or not the door 8 is being opened based on the opening / closing information. If the door 8 is open, the process proceeds to step S13. On the other hand, if the door 8 is closed, the process proceeds to step S14.

  In step S13, the execution unit 205 holds the operating state of the air conditioner when it is determined that the door 8 is open. Here, when the execution of the first differential pressure control is continued, when the door 8 is in an open state, the pressure in the shut-off exhaust passage 9 is reduced (the pressure in the machine room 1 is increased), and the output of the air conditioner 5 is Will be increased. If the door 8 is closed in a state where the output of the air conditioner 5 is increased, there is a concern that the pressure in the shut-off exhaust passage 9 rapidly increases. In the first embodiment, when the door 8 is open, the operating state of the air conditioner when it is determined that the door 8 is open is maintained, so that a sudden pressure increase when the door 8 is closed can be achieved. Can be suppressed. After the operating state of the air conditioner 5 is maintained, the process proceeds to step S11 again.

  On the other hand, in step S14, the execution unit 205 executes first differential pressure control. That is, when the first differential pressure control is already being executed, the first differential pressure control is continued, and the operation state of the air conditioner when it is determined that the door 8 is open is maintained. Resumes the first differential pressure control. Thereafter, the process of step S11 is executed again.

<Effect>
In the air conditioning system 100 according to the first embodiment described above, the shutoff exhaust passage 9 is formed as a closed space covered by the upper shutoff portion 6, the end shutoff portion 7, the adjacent rack group 2, and the floor 11. The exhaust heat flows through the shut-off exhaust passage 9. That is, although the shut-off exhaust passage 9 exists in the machine room 1 but exists as a closed space, the exhaust heat flowing in the shut-off exhaust passage 9 is reliably blocked from flowing into the machine room 1. be able to. That is, since only the air (cold air) cooled by the air conditioner 5 flows through the cold aisle 4, the server can be cooled more effectively than before. Further, since the air conditioner 5 is provided at the end of the row of rack groups 2, the flow direction of the exhaust heat in the shut-off exhaust passage 9 is stabilized, and it is possible to intake air efficiently. In addition, the air conditioning system 100 according to the first embodiment includes a differential pressure control system 150, and since the differential pressure between the pressure in the shut-off exhaust passage 9 and the pressure in the machine room 1 is made constant, the shut-off exhaust passage 9 It is possible to reliably confine the exhaust heat flowing inside the shut-off exhaust passage 9. That is, it is possible to more effectively suppress the exhaust heat flowing through the shut-off exhaust passage 9 from flowing into the cold aisle 4. Furthermore, conventionally, a facility such as a double floor is required, but the technology according to the first embodiment can suppress capital investment without the need to provide a double floor. Moreover, since it is not necessary to provide a double floor, the floor height can be suppressed.

[Second Embodiment]
Next, a second embodiment will be described (see FIGS. 10 to 12). Although the drawings disclose a side view, a front view, and a cross-sectional view of the rack group 2, the air conditioning system according to the second embodiment can be installed in the machine room 1 as in the first embodiment. The cross-sectional view of FIG. 12 is a cross-sectional view in the vicinity of the center of the hot aisle 3 in the longitudinal direction. In addition, about the structure similar to the structure already demonstrated, the description is abbreviate | omitted by attaching | subjecting the same code | symbol. Hereinafter, the same applies to other embodiments.

2nd embodiment shows the aspect in case the height of the air conditioning machine 51 and the height of the rack group 2 differ. 10 to 12 show examples in which the height of the air conditioner 5 is higher than the height of the rack group 2. In the air conditioning system according to the second embodiment, an intake surface side blocking portion 61 that reaches the ceiling 12 is provided above the intake surface of the adjacent rack group 2. The intake surface side blocking portion 61 is provided on the same plane as the intake surface of the rack group 2 so that the plate body stands vertically. The intake surface side blocking portion 61 is provided continuously from one end to the other end in the longitudinal direction of the rack group 2. Thereby, in the air conditioning system according to the second embodiment, an air chamber 65 through which exhaust heat flows is formed between the upper surface of the rack group 2 and the ceiling 12.

  In the air conditioning system according to the second embodiment, the ceiling 12 of the machine room 1 is used as a part of the configuration for forming a closed space, and the exhaust heat flowing through the air chamber 65 is effectively sucked. In order to make the shut-off exhaust passage 9 a closed space, the air conditioner 51 is designed to be higher than the air conditioner 5 of the first embodiment and reaches the ceiling 12 of the machine room 1. The air conditioner 51 is higher than the height of the rack group 2, and the upper end of the intake port 51 a that sucks exhaust heat is higher than the height of the rack group 2, and the area of the intake port 51 a is equal to the rack group 2. It is designed to be larger than the area of the discharge port for discharging the exhaust heat in one rack unit constituting the. The intake efficiency of the air conditioner 51 can be increased by increasing the height of the air conditioner 51 and further increasing the area of the intake port 51a. That is, exhaust heat from a rack away from the air conditioner 51 located near the center of the rack group 2 in the longitudinal direction can be effectively sucked into the air conditioner 51.

  The air conditioning system according to the second embodiment differs from the air conditioning system 100 according to the first embodiment in that the installation position of the air intake side blocking unit 61 and the height of the air conditioner 51 are different from the air conditioning system 100 according to the first embodiment. Similarly, the cut-off exhaust passage 9 is formed as a space closed by the ceiling 12 of the machine room 1, the intake surface side blocking portion 61, the end blocking portion 7, the adjacent rack group 2, and the floor 11. And although the exhaust heat exists in the machine room 1, it flows in the shut-off exhaust passage 9 that exists as a closed space, so the exhaust heat flowing in the shut-off exhaust passage 9 surely flows into the machine room 1. Can be blocked. Further, the exhaust heat having a high temperature flows through the air chamber 65 formed above the rack group 2, so that the exhaust surface side of the server is reduced from coming into contact with the exhaust heat having a high temperature and is accommodated in the rack group 2. It becomes possible to cool the server more effectively. In the second embodiment as well, the air conditioner 51 is provided at the end of the row rack group 2, so that the flow direction of the exhaust heat in the shut-off exhaust passage 9 is stabilized and efficiently sucked in air. Is possible. Further, by providing the differential pressure control system 150, it is possible to reliably confine exhaust heat flowing in the shut-off exhaust path 9 in the shut-off exhaust path 9.

[Third embodiment]
Next, a third embodiment will be described (see FIGS. 13 to 15). The air conditioning system 102 according to the third embodiment is provided with an auxiliary air conditioner 59 that supplements the cooling power of the air conditioner 5 provided at the end of the rack group 2, a floor suction port 11b, and an underfloor chamber 11c. In the air conditioning system 102 according to the second embodiment, the rack group 2 and the air conditioner 5 are the same in height as in the first embodiment, but in order to form the shut-off exhaust passage 9 as a closed space. In the upper part of the exhaust surface of the adjacent rack group 2, an upper blocking part is provided. In the third embodiment, the upper blocking part is configured by a blocking exhaust path ceiling 62 that forms the ceiling of the blocking exhaust path 9 and an intake surface side blocking part 63 that extends to the blocking exhaust path ceiling 62. More specifically, the intake surface side blocking portion 63 is provided on the same plane as the intake surface of the rack group 2 so that the plate body stands vertically. The intake surface side blocking section 63 is provided continuously from one end to the other end in the longitudinal direction of the rack group 2. And the cutoff exhaust path ceiling 62 is provided so that the upper ends of the opposing intake surface side cutoff part 63 may be passed. Therefore, also in the third embodiment, the air chamber 65 is formed above the rack group 2, and exhaust heat having a high temperature flows through the air chamber 65. A space is formed between the air chamber 65 and the ceiling 12 of the machine room 1, and cool air supplied from the auxiliary air conditioner 59 flows through this space.

  In the third embodiment, the upper blocking section is configured by the blocking exhaust path ceiling 62 that forms the ceiling of the blocking exhaust path 9 and the intake surface side blocking section 61 that extends to the blocking exhaust path ceiling 62. As in the first embodiment, the upper surfaces of adjacent rack groups 2 may be connected to each other (see FIG. 15). Even in such a mode, a space is formed between the upper blocking portion 6 and the ceiling 12 of the machine room 1, and cold air sent from the auxiliary air conditioner 59 flows through this space.

  The floor suction port 11 b is provided in the double floor 11 a below the hot aisle 3. That is, the floor suction port 11 b communicates with the cutoff exhaust path 9 and sucks exhaust heat flowing through the cutoff exhaust path 9. The sucked exhaust heat is guided to the auxiliary air conditioner 59 through the underfloor chamber 11c communicating with the underfloor suction port 11b. The exhaust heat sucked into the auxiliary air conditioner 59 is cooled by the auxiliary air conditioner 59 and sent to the machine room 1 (a space area other than the shut-off exhaust passage 9). The floor suction port 11b can be configured by opening the double floor 11a of the machine room 1 and installing a grating in the opening. The length of the hot aisle 3 in the longitudinal direction of the floor suction port 11 b may be the same as the width of the intake surface of the air conditioner 5 or longer than the width of the intake surface of the air conditioner 5. When making it longer than the width of the air intake surface of the air conditioner 5, it may be longer toward the center of the hot aisle 3. The auxiliary air conditioner 59 supplements the air conditioner 5, and it is not necessary to open the entire surface of the double floor 11 a of the hot aisle 3. In addition, when the floor suction inlet 11b is previously provided over the whole surface of the double floor 11a of the hot aisle 3, it may be used. Note that, as described above, cooling is mainly performed by the air conditioner 5 and the auxiliary air conditioner 59 only needs to have the ability to process surplus heat, so the aeration capacity of the underfloor chamber 11 may be small. Therefore, the height of the underfloor chamber 11, in other words, the height of the underfloor space can be designed to be lower than the conventional one. As a result, the floor height can be suppressed.

  The underfloor chamber 11 c is formed in the underfloor space of the double floor 11 a and guides the exhaust heat sucked from the floor suction port 11 b to the auxiliary air conditioner 59.

The auxiliary air conditioner 59 cools the exhaust heat sent through the underfloor chamber 11 c and sends out the cooled air to the machine room 1. In the third embodiment, the auxiliary air conditioner 59 is provided outside the machine room 1. Examples of the auxiliary air conditioner 59 include a packaged air conditioner that cools air by compressing and expanding a refrigerant to change the phase. In this case, the refrigerant may be either a fluorocarbon refrigerant or a water refrigerant. The refrigerant supplied to the auxiliary air conditioner 59 is a refrigerant cooled by a cooler (not shown), and is supplied by a refrigerant circulation system that circulates between the auxiliary air conditioner 59 and the cooler. The electric fan constituting the auxiliary air conditioner 59 can adjust the air volume in proportion to the operation state of the server fan. When the scale of the data center or machine room is large, the heat source device is not necessary in place of the package type air conditioner, and air is supplied using a refrigerant supplied from a heat source provided in advance in the data center. You may use the air handling unit which cools. The auxiliary air conditioner 59 only needs to be able to cool the exhaust heat, and an existing technology can be appropriately used instead of the auxiliary air conditioner.

  As described above, the air conditioning system 102 according to the third embodiment described above includes the auxiliary air conditioner 59, the floor suction port 11b, and the underfloor chamber 11c, thereby improving the cooling capacity of the air conditioner 5 provided at the end of the rack group 2. Can make up. In addition, since many conventional machine rooms include a packaged air conditioner, a floor inlet or floor outlet, and an underfloor chamber, such existing facilities can be used.

  The preferred embodiments of the present invention have been described above, but the air conditioning system according to the present invention is not limited to these, and can include combinations thereof as much as possible.

DESCRIPTION OF SYMBOLS 1 ... Machine room 2 ... Rack group 3 ... Hot aisle 4 ... Cold aisle 5 ... Air conditioner 6 ... Upper interruption | blocking part 7 ... End part interruption | blocking part 8 ... Door 9 ... Shut-off exhaust passages 100, 102 ... Air conditioning system 150 ... Air conditioning control system 200 ... Air conditioning control unit 201 ... CPU
202 ... Memory 203 ... Information acquisition unit 204 ... Determination unit 205 ... Execution unit 206 ... Shut-off exhaust passage pressure sensor 207 ... Machine room pressure sensor 208 ... Open / close sensor

Claims (4)

An air-conditioning system for a heat-generating device storage chamber that performs air-conditioning of a heat-generating device storage chamber in which a plurality of row-shaped storage units that store the heat generating devices are arranged,
The exhaust heat passage that cools the air sucked from the exhaust heat passage through which the exhaust heat exhausted from the heat generating device passes among the passages provided opposite to both ends of the accommodation portion and sandwiched between the two accommodation portions. An air conditioner that sends air to the cold air passage, which is the passage next to
A blocking portion that covers the exhaust heat passage, and blocks the exhaust heat of the exhaust heat passage from flowing out of the internal space covered by the blocking portion;
A heating device storage chamber pressure detection unit for detecting a heating device storage chamber pressure which is a pressure in the heating device storage chamber;
A passage pressure detector for detecting a passage pressure which is a pressure in the exhaust heat passage;
An air conditioning control unit that adjusts the air volume of the air conditioner so that the differential pressure between the heat generating device storage chamber pressure and the passage pressure is constant, and
The air intake surface of the air conditioner is disposed along a row of accommodating portions,
The air conditioning control unit, the or heating unit container pressure and said passage pressure is the same, said passage pressure performs air volume adjustment of the air conditioner so below the heating unit container pressure, the air conditioning system for heating equipment accommodating chamber.   2. The heat generating device housing air conditioning system according to claim 1, wherein the blocking unit includes an end blocking unit that blocks an end of the exhaust heat passage and an upper blocking unit that blocks an upper portion of the exhaust heat passage. The blocking portion includes an end blocking portion that blocks an end portion of the exhaust heat passage, and an upper blocking portion that blocks an upper portion of the exhaust heat passage,
The end blocking portion has a door on one or both of the end blocking portions,
The air-conditioning system for the heat generating device storage room further includes an opening / closing detection unit that detects opening / closing of the door,
3. The air conditioning control unit according to claim 1, wherein the air conditioning control unit maintains an operation state of the air conditioner when it is determined that the door is open based on a detection result by the opening / closing detection unit. Air conditioning system for heat generating equipment storage room. The air conditioner is higher than the height of the accommodating portion, and further has an upper end of an intake port for sucking the exhaust heat higher than the height of the accommodating portion, and the area of the intake port constitutes the row of accommodating portions 4. The discharge port according to claim 1, wherein the discharge port discharges heat exhausted from the heat-generating device to be stored in the single storage unit that is larger than an area of the discharge port facing the exhaust heat passage. 2. An air conditioning system for a heat generating device accommodation chamber according to claim 1.

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