JP5743536B2 - Air conditioning system for information processing equipment room - Google Patents

Description

  The present invention relates to an air conditioning system for an information processing equipment room.

  With the development of information processing technology, the amount of heat generated by information processing equipment has been increasing. Along with this, the processing amount of the air conditioning system in the information processing equipment room for cooling the information processing equipment is also increasing, and the development of air conditioning technology capable of efficiently cooling the information processing equipment is being carried out.

  For example, Patent Documents 1 and 2 disclose an air conditioning system for an information processing equipment room that adjusts the air flow using a shielding plate or a rectifying material. Patent Documents 3 and 4 disclose an air conditioning system for an information processing equipment room in which a passage between server racks is divided into a zone in which cool air flows and a zone in which warm air flows. Patent Document 5 discloses an air conditioning system for an information processing equipment room that suppresses variation in the amount of blown air by providing a filter at each outlet provided on the floor.

JP 2009-109045 A JP 2010-54095 A JP 2010-43817 A JP 2008-185271 A Japanese Patent No. 3365526

  In a large-scale information processing facility such as a data center, a number of racks accommodating information processing devices are arranged in a room. In order to distribute the cool air to each information processing device without excess or deficiency, the flow rate of the cool air flowing along the rack row needs to be adjusted appropriately. If the flow rate is slow, the amount of cool air necessary for cooling may not be secured, and if the flow rate is fast, parts with low static pressure may be partially generated, vortices or turbulence may occur, and in some cases, warm This is because the exhaust gas may partially flow out to the cold air supply side. In addition, the flow rate of the cold air flowing along the rack row depends on the positional relationship between the outlet and the rack row from which the cold air blows, so that sufficient air-conditioning air volume cannot be secured due to various restrictions such as the structure of the building. There is.

  Therefore, the present application can distribute the cool air to each rack containing the information processing apparatus without excess or deficiency, regardless of the position of the cool air outlet installed in the room or the amount of the blown air, and even if the wind speed of the cool air is high. An object is to provide an air conditioning system for an information processing equipment room.

  In order to solve the above-described problems, the present invention adjusts the flow rate of the cold air flowing from the air outlet to the rack by receiving the cold air blown from the air outlet installed in the information processing equipment room where the racks accommodating the information processing equipment are aligned. A breathable rectifying member is provided.

  Specifically, it is an air conditioning system for an information processing equipment room in which racks containing information processing equipment are aligned, and the information processing equipment opens from the side or the top of the rack toward the rack in the information processing equipment room. A blowout port for blowing cold air for cooling the equipment into the information processing equipment room, and a breathable rectifying member that receives the cold air blown from the blowout opening and adjusts the flow rate of the cold air flowing from the blowout port to the rack And comprising.

  The flow straightening member adjusts the flow rate of the cold air by providing a ventilation resistance between the flow path of the cold air from the blowout port from which the cold air blows to the rack, and the cold air is sucked into the air intake surface of each rack substantially evenly. Thus, the flow of the cold air flowing through the intake surface side of the rack row is arranged. For example, the rectifying member is installed on the air outlet side of a passage formed between a pair of rack rows facing each other and the air intake surface of the rack is vented between the flow paths of the cold air from the air outlet to the rack. Give resistance. By providing such a rectifying member between the flow path from the air outlet to the intake surface of the rack, the path from the air outlet to the rectifying member functions as a virtual plenum chamber, and the cool air downstream of the rectifying member is cooled. The flow is complete. As a result, regardless of the position of the outlet and the amount of blown air, the influence of the flow velocity is alleviated, and the cool air reaches the racks without excess or deficiency.

  Further, the rectifying member may receive cold air that flows into a passage formed between a pair of rack rows facing each other and the air intake surface of the rack is blown out toward the passage from the outlet. Cold air flowing into a passage formed between a pair of rack rows facing each other on the air intake surface of the rack is likely to generate a low static pressure region on the air intake surface of the rack on the upstream side of the passage. However, if the rectifying member receives the cold air blown out from the outlet to the passage, excessive supply of the cold air to the downstream side is suppressed, and the static pressure on the intake surface of the rack on the upstream side of such a passage is suppressed. Insufficiency is prevented.

  Further, in the rack row aligned with the information processing equipment room, when the racks are arranged at intervals, the air outlet opens from the side of the rack toward the rack in the information processing equipment room. In addition, at least a part of the rectifying member may cover between racks arranged at intervals. If the rectifying member is provided so as to cover the racks arranged at intervals, the area of the cold air passage in which the flow velocity is adjusted by the rectifying member is larger than when the racks are arranged at a small interval. Thereby, the variation in the flow velocity immediately before reaching the flow straightening member can be suppressed. Therefore, it is possible to prevent the speed of the airflow from being increased and supply the cool air necessary for each rack at a low speed. When the cool air becomes low speed, generation of vortex and low pressure region is prevented, so that there is no possibility that hot air of hot aisle flows backward in the rack and the information processing device is not cooled.

  Further, if the airflow resistance is 5 to 30 in terms of the static pressure with respect to the dynamic pressure of the air outlet, the speed of the cool air blown from the air outlet is adjusted within a practical range, and the rectifying member is adjusted to each rack. Cold air spreads over and over.

  In addition, the air conditioning system of the information processing equipment room further includes a partition member that partitions a path through which cool air sucked into the intake surface of the rack blown out from the air outlet and a path through which the exhaust discharged from the rack flows. It may be a thing. If the path through which the cold air sucked into the intake surface of the rack blown out from the blowout outlet is separated from the path through which the exhaust discharged from the rack flows, the cold air blowing from the blowout outlet will not flow into the path through which the exhaust flows. The bypass flow that flows out into the hot aisle without being sucked into the rack is eliminated, so that the blast power is not wasted, and the cold air rectified by the rectifying member is easily sucked into the rack.

  The path through which the cold air flows is formed in the information processing equipment room, the path through which the exhaust air flows is a path formed between a pair of rack rows facing the exhaust surfaces, and a ceiling behind the information processing equipment room. It may be formed in the space formed. With such an air conditioning system for an information processing equipment room, most of the space in the information processing equipment room can be assigned as an adjustment path for the flow rate of the cold air blown from the air outlet, so the air volume of the cold air blown from the air outlet Even if this increases, the flow of cool air flowing on the intake surface side of the rack row can be sufficiently adjusted.

  Regardless of the position of the cool air outlet and the amount of blown air, the cool air can be distributed to the racks that accommodate the information processing equipment without excess or shortage even if the wind speed of the cool air is high.

It is a block diagram of the data center which concerns on 1st embodiment. It is the figure which showed the path | route through which return air flows. It is an enlarged view of the installation state of a flow regulating material. It is a figure showing a course through which cold air flows. It is the graph which plotted the relationship between the speed of cold air, and static pressure. It is the graph which plotted the relationship between the ratio of the static pressure with respect to dynamic pressure, and minimum speed ratio. It is a block diagram of the data center which concerns on the modification of 1st embodiment. It is a figure showing a course through which cold air flows. It is a block diagram of the data center which concerns on 2nd embodiment. It is the figure which showed the path | route through which return air flows. It is a figure showing a course through which cold air flows. It is a block diagram of the data center which concerns on 3rd embodiment. It is the figure which showed the path | route through which return air flows. It is a figure showing a course through which cold air flows. It is a block diagram of the data center which concerns on the modification of 3rd embodiment. It is a figure showing a course through which cold air flows. It is a block diagram of the data center which concerns on the modification of 1st embodiment. It is an enlarged view of the part which thinned the rack. It is a figure which shows the example at the time of aligning each rack at intervals. It is an enlarged view of the modification of the part which thinned the rack.

  FIG. 1 is a configuration diagram of a data center 101 in which an air conditioning system 100 for an information processing equipment room according to the first embodiment is arranged. As shown in FIG. 1, the data center 101 has a large number of racks 102, in which server units 103 that accommodate various information processing devices such as servers and communication devices for performing various arithmetic processes and database management are arranged. The server room 103 is provided with a large number of air conditioning units 104 that generate cool air to be supplied to each rack 102. Each air conditioning unit 104 is disposed at one corner of the server room 103, and is disposed on the left side in FIG. The position of each air conditioning unit 104 is not limited to one corner of the server room 103, but the present invention can be used as long as the flow rates of the cold air flowing to the intake surface of the rack 102 vary from one rack 102 to another. The function of is demonstrated more effectively.

  Each rack 102 is provided with a cooling fan for cooling the information processing device, and either the front surface or the back surface of the rack is an intake surface, and the other is an exhaust surface. The cooling fan of the information processing device in each rack 102 is controlled in rotational speed so as to change every moment according to the load state and suction temperature of the information processing device accommodated in the rack. Alternatively, it may move at a constant rotational speed. When there is a gap in the rack 102 or between adjacent racks 102 because the information processing device is not installed, it is preferable to prevent the gap with a panel or the like that prevents the warm air from flowing around.

The air conditioning unit 104 includes a cooling coil and an electric fan, and cools the air in the server room 103. Here, in the data center 101 according to the present embodiment, each rack 102 is installed on a floor surface 106 formed by a concrete slab 105B. Therefore, there is no so-called underfloor space under the floor surface 106. On the other hand, a ceiling board 107 is provided between the concrete slab 105U and the server room 103 to form a double ceiling structure. Therefore, as shown in FIG. 2, the air conditioning unit 104 sucks the exhaust of each rack 102 from the space 108U behind the ceiling formed between the ceiling board 107 and the concrete slab 105U through an opening provided on the upper surface. Cool down. Then, the cooled air is sent into the server room 103 from an outlet provided on the front surface (for example, in the vicinity of the inner wall of the server room 103) as viewed from the end side wall of the rack row 109 in which the racks 102 are aligned. The air conditioning unit 104 may be one in which a coil and a fan are housed in separate casings, and both are connected by a duct. The air conditioning unit 104 may be a ceiling-suspended type or a ceiling-embedded type, or may be installed in a separate room and extended to the server room 103 by a duct only at the air outlet. In this case, the air outlet of the air conditioning unit 104 may be provided on the ceiling board 107 so as to blow out from the ceiling.

  In the data center 101, the directions of the intake surface and the exhaust surface of each rack 102 constituting one rack row 109 are aligned so that the cool air is efficiently supplied to each rack 102. The two rack rows 109 facing each other are arranged so as to face each other on the intake surface or the exhaust surface. By installing each rack 102 in this way, a path through which cool air flows and a path through which warm air flows are alternately formed between the rack rows 109. Hereinafter, a passage through which cool air flows, surrounded by a pair of rack rows 109 facing each other, is referred to as a cold aisle C, and a passage through which warm air surrounded by a pair of rack rows 109, each facing an exhaust surface, is referred to as hot aisle H. .

  A partition plate 110 that separates the hot aisle H and the cold aisle C is provided between both ends of the two rack rows 109 sandwiching one hot aisle H, or between the rack row 109 and the ceiling board 107. This partition plate 110 shields the flow of air. In addition, when the height of each rack 102 is the same height as the ceiling board 107, the partition plate 110 arrange | positioned between the rack row | line | column 109 and the ceiling board 107 is unnecessary. Since the upper part of the hot aisle H in the ceiling board 107 is open, the warm air in the hot aisle H surrounded by the partition plate 110 flows to the space 108U behind the ceiling without going around to the cold aisle C side. become.

Further, of the two rack rows 109 sandwiching one cold aisle C, the end on the side where the air conditioning unit 104 is disposed receives the cold air blown from the air outlet of the air conditioning unit 104, and the outlet A rectifying material 111S for adjusting the flow rate of the cold air flowing from the rack 102 to each rack 102 is provided, and a rectifying material 111U is provided at the upper ends of the two rack rows 109. FIG. 3 shows an enlarged view of the installed state of the flow regulating members 111U and 111S. Here, the cold aisle C between the two rack rows 109 has a floor surface closed with a floor material, and the upper and left end sides of the opposite side of the row of facing rack rows 109 and the top surface are rectified. As a mesh. Since it is far away from the air outlet of the air conditioning unit 104, the flow rate of the cold air is slow, and the right end side of the cold aisle C where the lack of static pressure does not become a problem, the rectifying material 111S is omitted. For this reason, most of the cold air that has come out from the air outlet of the air conditioning unit 104 flows into the cold aisle C between the rack rows 109 via the air flow regulating member 111S on the air outlet side, but the cold air that has not passed through the air straightening member 111S. Passes through the space between the upper side of the rack row 109 and the rectifying material 111U and the lower side of the ceiling board 107, and the other end side of the cold aisle C opposite to the side where the rectifying material 111S is provided (see FIG. On the right side in FIG. 1, mixing of cold air in two directions occurs. The rectifying members 111U and 111S suck in cold air into the rack 102 because static air pressure is reduced or turbulent flow is formed on the intake surface side of the rack 102 due to the high flow velocity of the air blown from the air conditioning unit 104. It is installed for the purpose of preventing the occurrence of defects, and as shown in FIG. 4, cold air having a substantially uniform flow rate flows through the cold aisle C. The flow regulating members 111U and 111S only need to be able to generate a ventilation resistance in the passage of the cold air flowing from the air conditioning unit 104 to the cold aisle C. The rectifying material such as a register used for a rectifying material, various filters, punching plates, wire mesh, cloth, or a laminate thereof, and an air-conditioning outlet can be applied. If it is a net-like rectifier such as a filedone filter or a saran net used in room air conditioners, etc., it is soft and has excellent workability. Which material is applied as the rectifying member is appropriately determined according to the required strength, the air volume of the air conditioning unit, the flow rate of the cold air, and the like.

  The rectifying members 111U and 111S are preferably selected so that the ventilation resistance is about 5 to 30 in terms of the ratio of static pressure to dynamic pressure (air outlet of the air conditioning unit). The reason is as follows.

In the practical range, the shape of the velocity distribution of the cold air passing through the flow straightening material is generally similar regardless of the flow rate if the ratio of the static pressure and the dynamic pressure is constant, in other words, the shape of the cold air passing through the flow straightening material. The shape of the velocity distribution is determined by the ratio between the static pressure and the dynamic pressure. Here, the space from the air outlet of the air conditioning unit 104 to the rectifying members 111U and 111S is considered as a continuous branch pipe of the pipeline (hereinafter, this space is referred to as a virtual plenum chamber), and the loss of friction or the like in this space is ignored. The following equation holds.

  By calculating sequentially from the above formulas (1) and (2), it is possible to obtain the distribution of the blowing speed and static pressure at an arbitrary position. Taking into account the resistance coefficient of the rectifying material and calculating the relationship between the cooling air speed and the static pressure for each virtual plenum chamber whose dimensions are arbitrarily set, for each ratio (Pr) of the static pressure to the dynamic pressure. FIG. 5 shows a graph in which is plotted. Here, in the graph of FIG. 5, the speed ratio shown as the vertical axis is the ratio of the speed at a specific position to the average speed of the cold air (speed ratio = position speed / average speed), and the distance ratio shown as the horizontal axis is The ratio of the specific position to the total length (distance ratio = position / full length). Accordingly, if the speed ratio is close to 1 in any of the distance ratios 0 to 1, the speed variation is small. As shown in FIG. 5, when the ratio of the static pressure to the dynamic pressure is small (that is, when the value of Pr is small), the variation in the blowout speed of the cold air is large, and when the ratio of the static pressure to the dynamic pressure is large (that is, , When the value of Pr is large), it can be seen that the variation in the blowing speed of the cold air becomes small. From this, it can be seen that the higher the ratio of the static pressure to the dynamic pressure, the more uniform the velocity distribution of the cold air passing through the flow straightening material, and the cold air flow in the cold aisle C becomes more uniform.

  Here, in order to determine a practically appropriate ventilation resistance necessary for the rectifying material in the air conditioning system 100 according to the present embodiment, the horizontal axis represents the ratio of the static pressure to the dynamic pressure (Pr), and the vertical axis represents the minimum speed ratio. FIG. 6 shows a graph obtained by plotting. Here, the minimum speed ratio is a value of the smallest speed ratio in the range of the distance ratio 0-1. As shown in FIG. 6, when the ratio of the static pressure to the dynamic pressure (Pr) is less than 10, the minimum speed ratio rapidly increases as the ratio increases, gradually decreases between 10 and 30, and is less than 30. It can be seen that it gradually rises as it grows larger. From this result, it can be seen that when the ratio of the static pressure to the dynamic pressure (Pr) is less than 10, the ventilation resistance is too small, and when it is more than 30, the ventilation resistance is too large. Therefore, it turns out that it is preferable to select a rectifying material whose ventilation resistance is about 5 to 30 times, more preferably about 10 to 30 times the dynamic pressure (air outlet of the air conditioning unit). It should be noted that the rotation speed of the fan of the air conditioning unit may be controlled according to the differential pressure so that the rectifying material or the like does not become abnormal due to the differential pressure due to the ventilation resistance. However, since it is sufficient that the minimum speed ratio is 0.9 or more, if the ratio of the static pressure to the dynamic pressure (Pr) is 5 or more, there is no practical problem.

  In the air conditioning system 100 according to the present embodiment, the flow of cold air blown from the air conditioning unit 104 is adjusted by the ventilation resistance by the rectifying members 111U and 111S, and the cold air flows substantially uniformly in each rack 102. For this reason, the outlet of the air conditioning unit 104 can be arranged at an arbitrary position. In addition, the area of the blowout port can be increased, and the amount of cool air blown out can be increased while keeping the air supply rate uniform and low.

  FIG. 7 is a modification of the air conditioning system 100 according to the first embodiment. In the embodiment described above, the upper side of the cold aisle C is entirely covered with the rectifying material 111U. However, the rectifying members 111U and 111S suppress the flow rate of the air blown from the air conditioning unit 104, and the static pressure is reduced or turbulent flow is formed on the intake surface side of each rack 102, so that the cold air flowing into the rack 102 is reduced. Since it is installed for the purpose of preventing the occurrence of poor suction, as shown in FIG. 7, only the portion close to the air conditioning unit 104 on the upper side of the cold aisle C may be covered with the rectifying material 111U. . Even when the rectifying member 111U covers only the portion of the upper side of the cold aisle C that is particularly close to the air conditioning unit 104, the cold air flowing from the air outlet of the air conditioning unit 104 to the intake surface of each rack 102 as shown in FIG. The flow velocity of the rack 102 is suppressed, and a decrease in static pressure and the occurrence of turbulent flow on the intake surface side of the rack 102 are prevented, so that it is possible to prevent the cold air from being poorly sucked into the rack 102.

  FIG. 9 is a configuration diagram of the data center 201 in which the air conditioning system 200 according to the second embodiment is arranged. In the data center 201, as in the data center 101 according to the first embodiment, a large number of racks 202 are arranged in the server room 203, and the server room 203 is provided with an air conditioning unit 204. Further, the rectifying member 111S to be omitted is a portion between the rack row 209 opposite to the air outlet of the air conditioning unit 204, and the cool air blows through the passage of the cold aisle C toward the opposite wall surface (that is, FIG. 9). Left direction).

  The air conditioning unit 204 is substantially the same as the air conditioning unit 104 according to the first embodiment, but the suction side is partially different. The data center 201 according to the present embodiment has a double ceiling structure by the ceiling board 207, and a space 208B is formed between the floor surface 206 on which the rack 102 is installed and the concrete slab 205B, thereby forming a double It has a floor structure. Therefore, in the present embodiment, as shown in FIG. 10, the exhaust of each rack 202 is sucked and cooled from the space 208U behind the ceiling from the opening provided on the upper surface of the air conditioning unit 204, and the air conditioning according to the first embodiment. In addition to the system 100, a configuration is adopted in which cool air flows from the underfloor space 208 </ b> B to the cold aisle C through a mesh-like grating that forms the floor surface 206. Of the floor surface 206, a flow regulating member 211 </ b> B is attached to the floor surface portion of the cold aisle C. Therefore, the cold air flowing into the cold aisle C from the space 208B under the floor is also rectified.

  The air conditioning system 200 according to the present embodiment is the same as the air conditioning system 100 according to the first embodiment, except that not only the space 208U behind the ceiling but also the space 208B under the floor is used. In the air conditioning system 200, the flow of cold air blown out from the air conditioning unit 204 is adjusted by the rectifiers 211U, 211S, 211B, and the cold air flows substantially uniformly in each rack 202 as shown in FIG. For this reason, the outlet of the air conditioning unit 204 can be arranged at an arbitrary position. Therefore, it is possible to enlarge the area of the outlet or to provide a plurality of air outlets in multiple directions, or to increase the air supply capacity of the entire air conditioning system 200, not just the air conditioning unit 204, and maintain the air supply speed uniformly and at a low speed. The amount of cool air blown out can be increased.

  In the second embodiment described above, the upper side of the cold aisle C is entirely covered with the flow regulating member 211U. However, as shown in FIG. 7 as a modification of the first embodiment, the upper side of the cold aisle C is also shown. Of these, only the portion close to the air conditioning unit 204 may be covered with the rectifying material 211U.

  FIG. 12 is a configuration diagram of the data center 301 in which the air conditioning system 300 according to the third embodiment is arranged. Like the data center 101 according to the first embodiment and the data center 201 according to the second embodiment, a large number of racks 302 are arranged in the server room 303 in the data center 301, and an air conditioning unit 304 is provided in the server room 303. It has been.

  The air conditioning unit 304 is substantially the same as the air conditioning unit 104 according to the first embodiment, but a part of the suction side is different. The data center 301 according to the present embodiment has a double floor structure in which a space 308B is formed between the floor surface 306 on which the rack 302 is installed and the concrete slab 305B, but a ceiling board is provided. There is no double ceiling structure. Therefore, in the present embodiment, as shown in FIG. 13, the air conditioning unit 304 is configured to suck and exhaust the exhaust of each rack 302 from the space 308 below the floor from the opening provided on the lower surface.

  On the floor surface 306 of the hot aisle H, a mesh-like grating 312 is provided so that the air of the hot aisle H flows into the space 308B below the floor while allowing passage of people and the like. Is installed. A partition plate 310 that separates the hot aisle H and the cold aisle C is provided between both ends and between the upper ends of the two rack rows 309 sandwiching one hot aisle H. The partition plate 310 blocks the air flow so that the hot air of the hot aisle H does not flow to the cold aisle C. Since the floor of the hot aisle H communicates with the space 308B under the floor by the grating 312, the warm air in the hot aisle H surrounded by the partition plate 310 flows to the space 308B under the floor without going around the cold aisle C side. become.

  The air conditioning system 300 according to the present embodiment is the same as the air conditioning system 100 according to the first embodiment, except that the space 308B under the floor is used instead of the space behind the ceiling. In the air conditioning system 300, the flow of cold air blown out from the air conditioning unit 304 is adjusted by the rectifiers 311U and 311S, and the cold air flows substantially uniformly in each rack 302 as shown in FIG. For this reason, the outlet of the air conditioning unit 304 can be arranged at an arbitrary position. Therefore, it is possible to enlarge the area of the outlet, and it is possible to increase the amount of cool air blowing while maintaining the air supply speed at a uniform and low speed. Note that the air conditioning unit 304 may be provided under the floor so that the cold air is blown out from the air outlet provided in the floor surface 306.

In the above-described third embodiment, the upper side of the cold aisle C is entirely covered with the rectifying material 311U. However, as shown in FIG. Only the rectifying material 311U may be covered. Even if the flow regulating member 311U is configured to cover only the portion of the upper side of the cold aisle C that is particularly close to the air conditioning unit 304, the cold air flowing from the air outlet of the air conditioning unit 304 to the intake surface of each rack 302 as shown in FIG. The flow velocity of the rack 302 is suppressed, and a decrease in static pressure and the occurrence of turbulent flow on the intake surface side of the rack 302 are prevented, so that it is possible to prevent the poor intake of cold air into the rack 302.

  In addition, about each embodiment, the rectification | straightening material may protrude in the longitudinal direction or height direction of a channel | path, without aligning with the upper end and side end of a rack row | line. In that case, the overhanging portion can be made of a non-breathable plate material. Moreover, in each said embodiment, although it does not touch about providing the common port for getting in and out of the cold aisle C, you may provide a common door in a rectification | straightening material. In this case, it is desirable that the door is also made of a rectifying material, and if the door is formed with a frame along the end of the rack row, the flow of cold air is hardly disturbed. In addition, it is desirable to design the columns, frame members, door knobs, and the like that support the plate so as not to disturb the uniformity of the cold air flow. In addition, when using cloth or a thing similar to this as a rectification | straightening material, an opening-and-closing part may be formed with a fastener and this may be used as a passing port. However, in each of the above embodiments, a part of the flow regulating material covering the cold aisle C is omitted. For example, in FIG. 1, the right end side of the cold aisle C is open, so that it can be used as a passport. Absent.

  In each of the above embodiments, the rack row in which the racks are arranged without gaps is arranged in the server room. However, in each embodiment, some of the racks may be thinned out. FIG. 17 shows a modification in which a part of the rack 102 of the first embodiment is thinned out. When thinning out the rack 102, anti-falling metal fittings, rails for carrying-in installation, positioning marks, and the like may be formed along, for example, rows in anticipation of future expansion.

  In this modification, a part of the racks 102 in the rack row 109 arranged in the server room 103 (here, the third rack 102 of the rack row 109 extending in the longitudinal direction when viewed from the right side in FIG. 17) is interposed. A space S is formed in the thinned portion. On the rear side of the space S (on the hot aisle H side), a partition plate that shields the flow of air from the space S to the hot aisle H for the same purpose as the partition plate 110 that separates the hot aisle H and the cold aisle C. 110x is provided. In addition, on the upper side of the space S, a rectifying material 111x that adjusts the flow of cool air that blows out from the air conditioning unit 104 is provided in the same manner as the rectifying material 111U.

  FIG. 18 shows an enlarged view of a portion where the rack 102 is thinned out. In the present modification, the flow straightening material 111x is provided on the upper side of the space S from which the rack 102 has been thinned out. Therefore, as shown in FIG. Accordingly, it is possible to prevent the speed of the airflow from being increased and supply the necessary cool air to each rack 102 at a low speed. When the cool air becomes low speed, generation of a vortex or a low pressure region is prevented, so that there is no possibility that the hot air in the hot aisle H flows backward in the rack 102 and the information processing device is not cooled. Such an aspect can be similarly applied to the second embodiment having a double floor structure and the third embodiment having a double floor structure and a single ceiling structure.

  In the rack row 109, for example, as shown in FIG. 19, a large number of spaces S may be provided by arranging the racks 102 at intervals. If a large number of the spaces S are provided in this way, the flow path of the cold air is further increased as compared with the modified example in which the spaces S are irregularly provided, and the necessary cold air is supplied to each rack 102 at a low speed. Can do.

As shown in FIG. 18, the portion where the rack 102 is thinned may be provided with a rectifying material 111x on the upper side of the space S where the rack 102 is thinned. For example, as shown in FIG. The rectifying material 111x may be provided on the cold aisle C side. Even in this case, as in the case where the rectifying member 111x is provided on the upper side of the space S, the airflow can be prevented from being increased in speed, and the necessary cool air can be supplied to each rack 102 at a low speed. Such an aspect can be similarly applied to the second embodiment having a double floor structure and the third embodiment having a double floor structure and a single ceiling structure.

100, 200, 300 ... air conditioning system 102, 202, 302 ... rack 103, 203, 303 ... server room 104, 204, 304 ... air conditioning unit 110, 210, 310 ... partition plate 111 , 211, 311 ... Rectifying material C ... Cold aisle H ... Hot aisle

Claims (6)

An information processing equipment room air conditioning system in which racks containing information processing equipment are aligned,
Cold air for cooling the information processing device, which is installed in the information processing device room apart from the rack and opens toward the rack from one longitudinal direction of the row of the racks, is provided in the information processing device room. A blowout outlet that blows out;
A breathable rectifying member that is installed in the information processing equipment room, receives cold air from the air outlet between the air outlet and the rack, and adjusts the flow rate of the cold air flowing from the air outlet to the rack; The racks are arranged so as to cover the region where the suction surface of the rack row where the cool air is sucked by the respective cooling fans forming the suction surface in the aligned racks from the air outlet side, and at least the other in the longitudinal direction of the row of the racks A straightening member that is not installed on the side,
Air conditioning system for information processing equipment room. The rectifying member receives cool air that flows into the passage formed between a pair of rack rows facing each other, facing the intake surface of the rack, and blows out toward the passage from the outlet.
The air conditioning system of the information processing equipment room according to claim 1. The outlet is open from the side of the rack toward the rack in the information processing equipment room,
The rack row aligned with the information processing equipment room has racks arranged at intervals,
At least a part of the rectifying member covers the air outlet side between the racks arranged at intervals and the upper side between the racks,
The air conditioning system of the information processing equipment room according to claim 1 or 2. The rectifying member has a ventilation resistance of 5 to 30 in a ratio of static pressure to dynamic pressure of the blowout port.
The air conditioning system for an information processing equipment room according to any one of claims 1 to 3. It further comprises a partition member that partitions a path through which cool air sucked into the intake surface of the rack blown out from the blowout opening and a path through which the exhaust discharged from the rack flows.
The air conditioning system for an information processing equipment room according to any one of claims 1 to 4. The path through which the cool air flows is formed in the information processing equipment room,
The path through which the exhaust flows is formed in a passage formed between a pair of rack rows facing the exhaust surface and in a space formed in the back of the ceiling of the information processing equipment room.
The air conditioning system of the information processing equipment room according to claim 5.

Images