JP2014043959A - Air conditioning system of information processor room, and contraction flow reduction device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a technology capable of properly supplying cool air to a rack housing an information processor.SOLUTION: An air conditioning system of an information processor room includes a plurality of rack rows, and a semi-cylindrical contraction flow reduction device. In the rack rows, racks housing an information processor are aligned. The contraction flow reduction device is provided at the edge of an intake surface that is provided on the rack to suction cool air, blown out from an air conditioner for supplying cool air to an information processor room in which the plurality of rack rows are arranged, into the rack; and projects from the edge of the intake surface, provided at the end part of the rack row, so as to swell a peripheral surface. The contraction flow reduction device is provided at the edge of an intake surface that is not opposite to an outlet port of cool air from the air conditioner.

Description

  The present invention relates to an air conditioning system for an information processing equipment room and a contraction reduction device.

  The amount of processing of the air conditioning system in the information processing equipment room for cooling the information processing equipment is increasing, and air conditioning technology capable of efficiently cooling the information processing equipment is being developed.

  Since racks containing information processing devices are arranged in the information processing device room, there is a case where airflow of cold air supplied from the air conditioner is separated at the rack or the end portion of the racks to cause contraction. For example, Patent Document 1 discloses a technique for preventing separation of airflow generated at an end portion of a device in a clean room. Patent Document 2 discloses an air conditioner that suppresses airflow separation and reduces noise. Further, Patent Document 3 discloses a vehicle air conditioner capable of adjusting the spread angle of the blowout air. Patent Document 4 discloses a technique in which an inflow portion into a cold aisle is surrounded by a rectifying member.

Japanese Patent Laid-Open No. 9-72587 JP 2007-57182 A JP 2002-316533 A JP 2012-32133 A

  In a large-scale information processing facility such as a data center, a large number of racks accommodating information processing devices are arranged in a room. In large-scale information processing equipment, in order to distribute cold air to each information processing device without excess or deficiency, the air intake surface of the information processing device is placed opposite to form a cold aisle through which the cold air from the air conditioner passes. In general, a method of returning the concentrated high-temperature air to the air conditioner to a hot aisle formed on the exhaust surface side through which exhaust heat (warm air) from information processing equipment passes is generally adopted. In order to reduce the mixing loss of cold air and warm air and improve efficiency, a method of partitioning cold aisle and hot aisle to increase temperature efficiency has also been proposed. In particular, the method of partitioning hot aisles can be operated with reduced conveyance power, and the number of introduction cases is increasing. On the other hand, in the case where each of the above-described methods is adopted, the rectification is not particularly performed at the location where the cold airflow supplied from the air conditioner flows into the cold aisle. Therefore, a hot spot may be formed at the end of the rack (the end of the rack row) due to the contracted flow when the cool air flows into the narrow part of the flow path (between the rack and the rack). That is, the flow velocity of the cold air flowing into the cold aisle is increased and the static pressure near the intake surface on the rack row end side decreases with the increase of the dynamic pressure, so that the air in the rack becomes cold aisle. The hot air on the hot aisle side is easily drawn to the cold aisle side and hot spots are easily formed.

In addition, for example, Patent Document 4 and the like disclose a technique in which an inflow portion into a cold aisle is surrounded by a rectifying member. However, it is often not possible to enclose the rectifying member around the entire circumference of the rack row due to design and crime prevention restrictions (the inside of the rectifying member cannot be copied with a surveillance camera). For this reason, the inflow part on the opposite side of the outlet provided in the wall or the inflow part from above the cold aisle may not be surrounded by the rectifying member. In this case, the amount of air flowing in from the inflow portion not surrounded by the rectifying member is increased, and a hot spot is easily formed at the rack end portion of the inflow portion. Even if the inflow part is not surrounded by the rectifying member as described above, if the air conditioner with the outlet at a position close to the inflow part is stopped due to the rotation of the wheel accompanying maintenance of the air conditioner, the inflow The airflow blown out from the outlet at a position away from the section passes through the back side of the rack row, and the amount of air flowing from the inlet section on the opposite side of the wall where the outlet is arranged increases, and the rack end of this inlet section In this case, hot spots are easily formed. Further, in a passage between rack rows formed as a cold aisle, a door may be formed at an inlet near the outlet of the passage in some cases, and inflow of cold air from this portion may be blocked. Even in this case, the amount of air flowing in from a portion without a door may increase, and a hot spot may be easily formed at the rack end of the inflow portion.

  In view of the above problems, an object of the present invention is to provide a technique capable of appropriately supplying cold air to a rack that accommodates information processing equipment.

  In order to solve the above-described problems, the present invention projects a semi-cylindrical member from the end of a rack row so that the peripheral surface swells, and the semi-cylindrical member is used as a cool air outlet from an air conditioner. It was decided to be provided at the edge of the intake surface that does not face.

  More specifically, the present invention is an air conditioning system for an information processing equipment room, and cools air to a plurality of rack rows in which racks accommodating information processing equipment are aligned and an information processing equipment room in which the plurality of rack rows are arranged. The air intake surface at the end of the rack row is provided at the edge of the air intake surface provided in the rack for sucking cold air blown from the air conditioner to be supplied into the rack, and the peripheral surface swells A semi-cylindrical contraction reducing device projecting from the edge of the air intake, and the contraction reducing device is provided at the edge of the intake surface that does not face the cold air outlet from the air conditioner.

  According to the air conditioning system of the information processing equipment room according to the present invention, the flow path of the cold air passing through the contraction reducing device is gradually changed by the peripheral surface of the semi-cylindrical contraction reducing device. The abrupt change in the flow path of the cold air flowing into the air intake surface is alleviated, and the occurrence of the contracted flow generated on the air intake surface of the rack is suppressed. As a result, it is possible to properly supply the cold air to the intake surface of the rack containing the information processing device. Further, as described above, at the end of the rack row, a hot spot may be formed by the contraction flow when the cold air flows into a narrow portion of the flow path (between the rack and the rack). And a hot spot is formed also in the rack edge part which does not face the blower outlet of an air conditioner other than the rack edge part which faces the blower outlet of an air conditioner. Therefore, the contracted flow reduction device is provided at the edge of the intake surface that does not face the air outlet of the air conditioner, thereby suppressing the occurrence of contracted flow that occurs on the intake surface of the rack end that does not face the air outlet of the air conditioner. Can do.

  Here, the edge of the intake surface that does not face the air outlet of the cool air from the air conditioner includes other than the edge of the intake surface that faces the air outlet, and includes various modes. When the contraction reducing device is installed at the edge of the intake surface facing the air outlet, the axis of the semi-columnar current reducing device extends in the vertical direction and the peripheral surface expands toward the air outlet. Installed. In other words, the present invention includes installation modes other than those described above. That is, the contracted flow reducing device according to the present invention has a semi-cylindrical contracted flow reducing device in which the axis of the cool air is blown out from the outlet (for example, horizontal) and a direction orthogonal to the direction in which the cold air is blown out of the outlet. You may install so that a peripheral surface may swell toward (for example, the upper part), and let the axis of a semi-columnar flow reduction device be a direction orthogonal to the direction where cold air blown out from a blower outlet (for example, perpendicular direction) And you may install so that a surrounding surface may swell toward the same direction (direction opposite to a blower outlet) as the direction where cold air blown out from the blower outlet. The contraction reducing device may be further provided at the edge of the intake surface facing the air outlet of the air conditioner. That is, the contraction reducing device may be provided on both the edge of the intake surface facing the air outlet of the air conditioner and the edge of the intake surface not facing the air outlet of the air conditioner.

  Further, in the contraction reducing device, the axis of the semi-cylindrical contraction reducing device is provided perpendicular to the edge of the longitudinal end portion of the intake surface of the rack row, and further toward the longitudinal direction of the rack row. You may install so that a surrounding surface may swell. Further, the contraction reducing device may be installed such that the air outlet of the air conditioner is positioned obliquely with respect to the longitudinal direction of the rack row and faces the contraction reducing device. In an aspect in which the air outlet of the air conditioner is located obliquely with respect to the longitudinal direction of the rack row and faces the reduced flow reducing device, the air outlet of the air conditioner is located on the reduced flow reducing device side. The aspect in which a blower outlet and a contracted flow reduction apparatus do not face is illustrated. On the other hand, in a mode in which the air outlet of the air conditioner is positioned obliquely with respect to the longitudinal direction of the rack row and does not face the reduced flow reducing device, the outlet of the air conditioner is positioned on the opposite side of the reduced flow reducing device. The mode to do is illustrated. Regardless of the position of the outlet, by installing the contraction reducing device at the end of the rack row in the longitudinal direction, it is possible to suppress the occurrence of contraction generated at the intake surface at the end of the rack row in the longitudinal direction. .

  The contraction reducing device is provided horizontally at the upper end or lower end of the intake surface of the rack row, and when the contraction reducing device is provided at the upper end of the intake surface of the rack row, When the contraction reducing device is provided at the lower end of the intake surface of the rack row, it may be installed so that the peripheral surface expands downward. By installing the contraction reducing device at the upper end or the lower end of the rack row, it is possible to suppress the occurrence of the contraction generated at the intake surface of the upper end or the lower end of the rack row. As a mode in which a flow reduction device is provided at the lower end of the intake surface of the rack row, the rack is provided with legs, the rack is provided on a pedestal, or the rack is supported by a support column disposed between the floor and the ceiling. Thus, a mode in which the rack is installed so as to be separated from the floor is exemplified.

  Further, the air conditioning system for the information processing equipment room according to the present invention includes an upper portion of the space through which the cold air formed between the air intake surfaces of the rack rows facing each other, an inlet portion of the space, and the contracted flow It is good also as a structure further provided with the rectifier provided in at least any one among the inlet parts in the edge part of the rack row | line | column which is not provided with the mitigation apparatus, and rectifies the cold which blown off from the said blower outlet.

  By providing the rectifying device, it is possible to arrange the course of the cold air, and the cold air flows more smoothly along the intake surface of the rack. As a result, the occurrence of hot spots due to drift can be suppressed. As a result, the rectification function of the rectifier and the contraction of the current reduction device are organically operated by the rectification direction of the cold air by the rectification device and the swelling direction of the circumferential surface of the semi-cylindrical member provided in the reduction current reduction device. The flow reduction function works synergistically. In other words, by installing the rectifying device at a location where the reduced flow reducing device is not installed, the cold air smoothly flows along the intake surface of the rack. Cold air rectified by the rectifier flows into the intake surface of the rack. At this time, since the rapid flow change of the cool air is alleviated by the contraction reducing device, the occurrence of contraction generated on the intake surface of the rack is more effectively suppressed. As a result, it is possible to properly supply the cool air to the rack containing the information processing device. Further, as described above, enclosing the entire circumference of the rack row with the rectifying member is not preferable in terms of crime prevention because the inside of the rectifying member cannot be copied by the monitoring camera. On the other hand, in this invention, cold air can be appropriately supplied to the rack containing the information processing device without enclosing the flow straightening member around the entire circumference of the rack row. Therefore, in the present invention, it is possible to install a surveillance camera and to improve crime prevention.

  Further, the contracted flow reducing device may include a semi-cylindrical member and a prismatic member provided between the semi-cylindrical member and an edge of the intake surface. As a result, the constricted flow of the cold air blown out from the air outlet passes through the side of the prismatic member while being reduced by the semi-cylindrical member, and then flows to the intake surface of the rack. The cold air flows into the intake surface of the rack in a more stable state. As a result, it is possible to supply cool air more appropriately than when no prismatic member is provided.

Here, the present invention can also be specified as a reduced flow reducing device used in an air conditioning system of an information processing equipment room. Specifically, the present invention relates to a flow reduction device used in an air conditioning system of an information processing equipment room having a plurality of rack rows in which racks accommodating information processing equipment are aligned, Is provided at the edge of the intake surface that does not face the air outlet of the air conditioner among the edges of the intake surface provided in the rack in order to suck the cold air blown out from the air conditioner supplying It is a semi-cylindrical contraction reducing device that protrudes from the edge of the intake surface at the end of the rack row so as to swell.

  The reduced flow reducing device according to the present invention can be used in an air conditioning system for all information processing equipment rooms regardless of whether an existing or new rack, in other words, a new or existing rack is installed. By using the reduced flow reduction device in the air conditioning system of the information processing equipment room, it is possible to suppress the occurrence of the reduced flow generated on the intake surface of the rack and to appropriately supply the cold air to the intake surface of the rack containing the information processing equipment. It becomes possible.

  ADVANTAGE OF THE INVENTION According to this invention, cold air can be supplied appropriately to the rack which accommodated information processing equipment.

The whole block diagram of the air-conditioning system of the information processing equipment room which concerns on 1st embodiment is shown. The top view of the edge part of the rack row | line | column provided with the contraction reduction apparatus is shown. The figure which described the flow of the cold air which blown off from the air blower outlet is shown. The figure showing the application effect of a contraction reduction apparatus is shown. The comparison figure of the non-installation example and installation example of a current reduction apparatus is shown. The comparison figure of the rack suction temperature in FIG. 5 is shown. The whole block diagram of the air-conditioning system of an information processing equipment room is shown in 2nd embodiment. The whole air-conditioning system block diagram of an information processing equipment room is shown in the modification of 2nd embodiment. The whole block diagram of the air-conditioning system of the information processing equipment room which concerns on a 1st modification is shown. The whole block diagram of the air-conditioning system of the information processing equipment room which concerns on a 2nd modification is shown.

  Next, embodiments of the present invention will be described with reference to the drawings. The embodiment described below is merely an example, and the present invention is not limited to the embodiment described below.

<First embodiment>
<< Configuration >>
FIG. 1 shows an overall configuration diagram of an air conditioning system 1 of an information processing equipment room according to the first embodiment. The information processing equipment room air conditioning system 1 according to the first embodiment is provided in a data center 2. In the data center 2, a plurality of racks 3 in which information processing devices such as servers and communication devices for performing various arithmetic processes and database management are accommodated are arranged in a row in the server room 4. Further, on the side wall of the server room 4, an air outlet 5 (for example, an HS type (with a vertical blade type outlet and a shutter)) for supplying cool air into the server room 4 is provided. The cold air blown out from the air outlet 5 is generated by an air conditioner (not shown) provided outside the server room 4.

The cool air supplied to each rack 3 is not limited to that blown out from the air outlet 5 provided on the wall of the server room 4. For example, an air conditioning unit incorporating a cooling coil or an electric fan may be installed in the server room 4 so that the cool air is blown out directly from the air outlet of the air conditioning unit. In this case, the air conditioning unit can be installed indoors along the side wall or embedded in an opening provided on the side wall. Moreover, the air blower outlet 5 is not limited to the aspect arrange | positioned at a side wall, For example, you may arrange | position to the ceiling and the floor.

  Each rack 3 is provided with a cooling fan for cooling the information processing equipment inside or outside, and is configured such that either the front or the back of the rack 3 serves as an intake surface and the other serves as an exhaust surface. The upper surface of the rack 3 may be an exhaust surface. The cooling fan of each rack 3 may be one whose rotational speed is controlled so as to change from moment to moment according to the load state and suction temperature of the information processing equipment accommodated in the rack 3, or constant. It may be one that moves at the number of revolutions. When there is a gap in the rack 3 or between adjacent racks 3 because the information processing device is not installed or the like, it is preferable to fill the gap with a panel or the like that prevents warm air from flowing in.

  In the data center 2, the directions of the intake surface and the exhaust surface of each rack 3 constituting one rack row 6 are aligned so that the cool air is efficiently supplied to each rack 3. Two opposing rack rows 6 are arranged so as to face each other on the intake surface or the exhaust surface. By installing each rack 3 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 6. Hereinafter, a passage (space) through which cool air flows surrounded by a pair of rack rows 6 facing the intake surfaces is referred to as cold aisle C, and a passage (space) through which warm air flows surrounded by a pair of rack rows 6 facing exhaust surfaces. ) Is called Hot Isle H. The surface of the cold aisle C that faces one of the intake surfaces and the surface of the hot aisle H that faces one of the exhaust surfaces are not the intake surface of the rack 3 or the exhaust surface of the rack 3, but a wall (data) It may be a side wall of a center or a partition panel. In addition, although illustration is abbreviate | omitted in FIG. 1, the hot aisle H can be comprised by the wall for partitioning the exhaust surface of the rack 3, and space. The warm air exhausted to the hot aisle H can be guided to the air conditioner through a duct provided in the underfloor space or the ceiling space.

  The air outlet 5 is provided on a wall near at least one of the two ends of the cold aisle C surrounded by the two rack rows 6. In the example shown in FIG. 1, the air blower outlet 5 is provided in the wall near the edge part on the opposite side to the edge part in which the contraction reduction apparatus 8S was provided. In other words, the contracted flow reducing device 8S is provided at the end on the side not facing the air outlet 5. A rectifier 7 is provided at the end of the rack row 6 facing the air outlet 5 so as to cover the inlet of the cold aisle C. The rack 3 according to the first embodiment is designed to be lower than the ceiling of the server room 4, and the rectifier 7 is provided on the top surface of the cold aisle C so as to cover the top surface of the cold aisle C. Yes. When the rack 3 reaches the ceiling of the server room 4, the rectifier 7 is not necessary. The rectifying device 7 may be anything that can cause ventilation resistance in the passage of the cold air flowing from the air outlet 5 to the cold aisle C. For example, the rectifying device 7 has a net-like shape such as a filledon filter or a saran net used in a room air conditioner. Rectification materials, various filters, punching plates, wire mesh, cloth, or a laminate thereof, and rectification plates such as a register used for an air-conditioning outlet can be applied. If it is a net-like rectifying material such as a filledon filter or saran net used in room air conditioners, it is soft and has excellent workability.

Of the ends of the rack row 6 surrounding the cold aisle C, the peripheral surface is a rack at the corner of the rack row 6 that forms the inlet portion of the cold aisle C located on the opposite side of the air outlet 5. A semi-columnar contraction reducing device 8S that swells from the end of the row 6 in the longitudinal direction of the rack row 6 is installed upright from the floor. In such an attachment mode, in the present invention, the axis of the semi-cylindrical contraction reducing device is a direction orthogonal to the direction in which the cold air blows out, and the circumferential surface faces in the same direction as the direction in which the cold air blows out from the outlet. It is an example of the aspect which installs a contraction reduction apparatus so that may swell. The contracted flow reducing device 8S includes a prismatic spacer member 81 and a semi-cylindrical member 82, and the semi-cylindrical member 82 has a prismatic spacer member 81 having the same height as the semi-cylindrical member 82. The end of the rack row 6 is attached at the same height as the rack row or slightly higher. And
The contracted flow reducing device 8S is attached so that the peripheral surface of the semi-cylindrical member 82 is separated from the edge of the rack 3 by the thickness of the prismatic spacer member 81. In the contracted flow reducing device 8 </ b> S configured by the semi-columnar member 82 and the prismatic spacer member 81, the cold air blown out from the air outlet 5 wraps around between the wall of the server room 4 and the rack row 6. This reduces the contracted flow that occurs when flowing into the narrow cold aisle C from the space located at the bottom. Note that the spacer member is not necessarily an essential component, and may be omitted as appropriate according to the occurrence of hot spots. The material of the contraction reducing device 8S may be made of metal or resin.

  Here, FIG. 2 shows a top view of an end portion of the rack row 6 provided with the contraction reducing device. As shown in FIG. 2, the contraction reducing device 8 </ b> S is provided at each end of the two rack rows 6 sandwiching the cold aisle C. It should be noted that the rectifier 7 is not provided at the inlet portion of the cold aisle C on the air outlet 5 side, and the end flow is reduced at the corner portion of the rack row 6 forming the inlet portion of the cold aisle C on the air outlet 5 side. A mitigation device 8S may be provided.

  In the air conditioning system 1 configured as described above, the cold air blown from the air outlet 5 flows into the cold aisle C as follows. FIG. 3 shows a diagram describing the flow of cold air blown from the air outlet 5. The cold air blown out from the air outlet 5 is partially blocked from flowing into the cold aisle C by an air resistor such as the rectifier 7 and circulates outside the hot aisle H partitioned by a partition panel or the like. The cold air that has flown around the end of the rack row 6 located on the side opposite to the air outlets 5 flows through the corners of the rack row 6 and gradually changes its flow along the peripheral surface of the contraction reducing device 8S. As a result, the air flows into the cold aisle C without causing contraction on the intake surface of the rack row 6. As a result, the information processing apparatus accommodated in each rack 3 can be appropriately cooled without causing a hot spot in the rack 3. Moreover, although the rectifier 7 has air permeability, for example, when a door formed of a non-air permeable member is provided between the rack rows on the side close to the air outlet 5, cold air does not flow from that portion. Therefore, the amount of air flowing in from the inflow portion far from the air outlet 5 (where no door is provided) is increased, and hot spots are easily formed at the rack end of the inflow portion. Even in this case, it is possible to appropriately cool the information processing apparatus without generating a hot spot by installing the contraction reducing device.

<Verification>
FIG. 4 is a diagram illustrating the application effect of the contraction reducing device. For example, as shown in FIG. 4 (A), when the cold air blown out from the air outlet 5 flows into the cold aisle C, the path through which the cold air passes is rapidly narrowed near the end of the rack row 6. A contracted flow occurs, and the wind speed of the cold air flowing into the cold aisle C increases. As the dynamic pressure rises, the air in the rack 3 is attracted in the vicinity of the end of the rack row 6, so that the hot air on the hot aisle H side easily turns around to the cold aisle C side and a hot spot is formed. However, when the contracted flow reducing device 8S is provided, as shown in FIG. 4B, the lateral width of the path through which the cold air passes gradually decreases, so that the generation of contracted flow is suppressed and a hot spot appears. It becomes difficult to do.

  FIG. 5 shows a comparative view of a non-installation example and an installation example of the contracted flow reduction device. FIG. 5A shows a case where no contraction reducing device is installed, and FIG. 5B shows a case where a contracting reduction device is installed. In the example shown in FIG. 5, the rack suction temperature was verified by CFD (Computational Fluid Dynamics) analysis. FIG. 6 shows a comparison of rack suction temperatures in FIG. FIG. 6A shows a case where no contraction reducing device is installed, and FIG. 6B shows a case where a contracting reduction device is installed. As shown in FIG. 6A, when the reduced flow reducing device 8S is not installed, a high temperature portion is generated at the inlet portion of the cold aisle C (indicated by a dotted line in the figure). On the other hand, as shown in FIG. 6 (B), when the reduced flow reducing device 8S was installed, the generation of a high temperature portion at the inlet portion of the cold aisle C was not confirmed. That is, it was confirmed that the rack suction temperature can be easily equalized by installing the contraction reducing device 8S.

<Effect>
According to the air conditioning system 1 according to the first embodiment, it is possible to efficiently supply cold air to each rack 3 and suppress the appearance of hot spots. That is, it is not necessary to enclose the area other than the air supply surface as a countermeasure against hot air circulation, the construction cost can be reduced, and the degree of freedom of maintenance work is improved. In particular, the inflow angle and speed of the cool air flowing into the cold aisle C vary greatly depending on the positional relationship between the air outlet 5 and the rack row 6. Also, the cold air flowing into the cold aisle C due to changes in the air volume and direction due to changes in the load of information processing equipment such as servers accommodated in the rack 3 and the influence of wheel stoppages accompanying maintenance of the air conditioning equipment. The inflow angle and speed of the air changes greatly. However, according to the air conditioning system 1 according to the first embodiment, even when the position of the air outlet 5 is changed or the air volume and direction of the cold air are changed by the action of the contraction reducing device 8S. The appearance of hot spots can be suppressed. Moreover, since the reduced flow reducing device can be easily attached to an existing air conditioning system, it can be easily applied not only to a new construction but also to a repair. Further, since the cool air can be appropriately supplied to the rack 3, it is possible to reduce the amount of cooling air and the like to reduce the air conditioning energy.

<Second embodiment>
FIG. 7 shows an overall configuration diagram of an air conditioning system for an information processing equipment room according to the second embodiment. The air conditioning system of the information processing equipment room according to the second embodiment is an application example of the first embodiment. In the large-scale server room 4 in which a plurality of rack rows 6 are installed, the racks 3 are arranged around the rack rows 6. This is an example in which an unmounted area exists and a plurality of air conditioners are installed on the side wall of the server room 4.

  Also in the second embodiment, the cold aisle C is covered with a rectifier 7 having an inlet portion on the air conditioner side and a top surface made of a plate-like member. Therefore, the cold air blown out from the air outlets 5 of the plurality of air conditioners flows into the cold aisle C from the inlet portion of the cold aisle C that does not face the air conditioner.

  In the air conditioning system 1 of the information processing equipment room according to the second embodiment, the reduced flow reducing device 8S is provided in the inlet portion of the cold aisle C that does not face the air conditioner. An increase in rack suction temperature due to contraction can be suppressed.

  Here, FIG. 8 shows an overall configuration diagram of an air conditioning system of an information processing equipment room according to a modification of the second embodiment. In the modified example of the second embodiment, the rectifier 7 is not installed at the inlet and the top surface of the cold aisle C on the air conditioner side, but the reduced flow reducing device 8S is provided. In the inlet portion of the cold aisle C on the air conditioner side, the peripheral surface extends from the end of the rack row 6 to the corner portion of the rack row 6 located at the inlet portion, similarly to the inlet portion on the side not facing the air conditioner. A semi-columnar reduced flow reducing device 8S is installed upright from the floor so as to swell in the longitudinal direction of the rack row 6. Further, at the corner portion of the rack row 6 located at the upper opening of the cold aisle C, a semi-columnar flow reducing device 8S extends along the longitudinal direction of the cold aisle C so that the peripheral surface swells upward. It is attached to extend. In such an attachment mode, in the present invention, the axis of the semi-cylindrical contraction reducing device is a direction orthogonal to the direction in which the cold air blows out, and the circumferential surface faces in the same direction as the direction in which the cold air blows out from the outlet. In the embodiment in which the reduced flow reducing device is installed so as to swell, and in the present invention, the axis of the semi-cylindrical reduced flow reducing device is the direction in which cold air blows out from the outlet, and the direction in which cold air blows out from the outlet It is an example of the aspect which installs a contraction reduction apparatus so that a surrounding surface may swell toward the direction orthogonal to. The mounting mode of the reduced flow reducing device 8S provided at the inlet portion on the side not facing the air conditioner corresponds to the above-described previous mode when the air conditioner 5 surrounded by a dotted ellipse in FIG. 8 is used as a reference. Moreover, the attachment aspect of the current reduction device 8S provided in the upper opening part of the cold aisle C corresponds to the above-described latter aspect when the air conditioner 5 surrounded by a dotted ellipse in FIG. 8 is used as a reference. Thereby, the contracted flow which arises when flowing in the cold aisle C can be reduced.

  The rack row 6 may be installed so as to be separated from the floor. For example, the rack row 6 may be separated from the floor by being provided with legs, or may be separated from the floor by being installed on a breathable frame, or the floor and ceiling. It may be spaced apart from the floor by being supported by a support post disposed between the two. When the rack row 6 is installed so as to be separated from the floor in this way, the corner portion of the rack row 6 located at the lower opening of the cold aisle C has a semi-cylindrical shape so that the circumferential surface swells downward. Can be attached so as to extend along the longitudinal direction of the cold aisle C.

<First modification>
FIG. 9 shows an overall configuration diagram of an air conditioning system of an information processing equipment room according to the first modification. In the first modification, four corners of the rectangular server room 4 are chamfered, and an air conditioner is installed at each chamfered corner. In other words, the air conditioner is installed at each corner of the server room so that the air outlet 5 of the air conditioner faces the center of the server room. On the other hand, the rack row 6 is installed in parallel with the side wall (long side) of the server room 4. For this reason, for example, although the airflow reduction device 8S1 and the airflow outlet 5 of the air conditioner are provided at the inlet portion of the cold aisle C in the vicinity of the air conditioner surrounded by the dotted-line ellipse, Not meeting. Further, the other contraction reducing devices 8S2 do not face the air outlet 5 of any air conditioner. Therefore, in the present invention, the contraction reducing device is provided at the edge of the intake surface that does not face the cool air outlet from the air conditioner, and in particular, the contraction reducing device is a semi-cylindrical contraction flow. In the aspect in which the axis of the mitigation device is provided perpendicular to the edge of the longitudinal end of the intake surface of the rack row, and the peripheral surface is further swelled in the longitudinal direction of the rack row, An attachment aspect of the contracted flow reduction devices 8S1 and 8S2 in one modification is also included. 9 is an example of a mode in which, in the present invention, the air outlet of the air conditioner is positioned obliquely with respect to the longitudinal direction of the rack row and faces the contraction reducing device. is there. In addition, the inlet part of the cold aisle C to which the reduced flow reducing devices 8S1 and 8S2 are not attached can be covered with, for example, the rectifier 7.

<Second modification>
FIG. 10 is an overall configuration diagram of an air conditioning system of an information processing equipment room according to the second modification. In the second modified example, the server room 4 has a trapezoidal shape, and one side wall of the server room 4 is not perpendicular to the axial direction of the rack row 6 and is not parallel to each other and is inclined. A plurality of air conditioners are installed on the inclined side walls. The rack row 6 is installed in parallel with the side wall (long side) of the server room 4. Therefore, although the reduced flow reducing device 8S1 is also provided at the inlet of the cold aisle C on the air conditioner side, the reduced flow reducing device 8S1 and the air outlet 5 of the air conditioner do not face each other. Further, the other contraction reducing devices 8S2 do not face the air outlet 5 of any air conditioner. Therefore, in the present invention, the contraction reducing device is provided at the edge of the intake surface that does not face the cool air outlet from the air conditioner, and in particular, the contraction reducing device is a semi-cylindrical contraction flow. In the aspect in which the axis of the mitigation device is provided perpendicular to the edge of the longitudinal end of the intake surface of the rack row, and the peripheral surface is further swelled in the longitudinal direction of the rack row, The attachment mode of the contraction reducing devices 8S1 and 8S2 in the two modifications is also included. 10 is an example of a mode in which, in the present invention, the air outlet of the air conditioner is located obliquely with respect to the longitudinal direction of the rack row and faces the contraction reducing device. is there. In the second modification, the flow reduction devices 8S1 and 8S2 are provided at the inlets of all the cold aisles C. However, a part of them may be covered with the rectifying device 7, for example.

  In the case of Modification 1 and Modification 2, that is, in the case of the server room 4 in which the air outlet 5 is located obliquely with respect to the longitudinal direction of the rack row 6, it is located in the upper opening of the cold aisle C. You may attach to the corner | angular part of the rack row | line | column 6 so that a semi-columnar flow reduction device may extend along the longitudinal direction of the cold aisle C so that a surrounding surface may bulge upward.

  As mentioned above, although preferred embodiment of this invention was described, the air-conditioning system of an information processing equipment room and the current reduction apparatus which concern on this invention can contain these combinations as much as possible not only in these.

DESCRIPTION OF SYMBOLS 1 ... Air-conditioning system 2 ... Data center 3 ... Rack 4 ... Server room 5 ... Air outlet 6 ... Rack row 7 ... Rectifier 8S, 8S1, 8S2 ... Shrinkage reducing device 81 ... spacer member 82 ... semi-cylindrical member

Claims (9)

A plurality of rack rows in which racks accommodating information processing devices are aligned;
Provided at an edge of an intake surface provided in the rack for sucking cold air blown from an air conditioner that supplies cold air to an information processing equipment room in which the plurality of rack rows are arranged, A semi-cylindrical contraction reducing device that protrudes from the edge of the intake surface at the end of the rack row,
The airflow reduction system is an air conditioning system for an information processing equipment room provided at an edge of the intake surface that does not face a cold air outlet from the air conditioner.   The contracted flow reducing device has a semi-cylindrical contracted flow reducing device having an axis that is perpendicular to the direction in which cold air is blown out from the blowout port, and is directed in the same direction as the direction in which cold air is blown out from the blowout port. The air conditioning system of the information processing equipment room according to claim 1, wherein the air conditioning system is provided so that the surface swells.   In the contracted flow reducing device, the axis of the semi-cylindrical contracted flow reducing device is set to a direction in which cold air is blown out from the outlet, and a peripheral surface swells in a direction orthogonal to the direction in which cold air is blown out from the outlet. The air conditioning system of the information processing equipment room according to claim 1, which is provided as described above.   In the contraction reducing device, the axis of the semi-cylindrical contraction reducing device is provided perpendicular to the edge of the longitudinal end of the intake surface of the rack row, and further the circumferential surface toward the longitudinal direction of the rack row The air conditioning system for an information processing equipment room according to claim 1, wherein the air conditioning system is provided so as to swell.   The air conditioning system for an information processing equipment room according to claim 4, wherein the air outlet of the air conditioner is positioned obliquely with respect to the longitudinal direction of the rack row and faces the reduced flow reducing device.   The contraction reducing device is provided horizontally at the upper end or lower end of the intake surface of the rack row, and when the contraction reducing device is provided at the upper end of the intake surface of the rack row, The air conditioning system for an information processing equipment room according to claim 1, wherein when the contraction reducing device is provided at the lower end portion of the intake surface of the rack row, the peripheral surface is provided so as to expand downward.   Above the space through which the cool air flows formed between the air intake surfaces of the rack rows facing each other, and at the inlet portion of the space at the end portion of the rack row where the contraction reducing device is not provided The air conditioning system for an information processing equipment room according to any one of claims 1 to 6, further comprising a rectifying device that is provided in at least one of the units and rectifies the cold air blown from the air outlet.   The said contracted flow reduction apparatus includes a semi-cylindrical member and a prismatic member provided between the semi-cylindrical member and an edge of the intake surface. The air conditioning system of the information processing equipment room described in the paragraph. A reduced flow reducing device used in an air conditioning system of an information processing equipment room including a plurality of rack rows in which racks containing information processing equipment are aligned,
The edge of the intake surface that does not face the air outlet of the air conditioner among the edges of the intake surface provided in the rack in order to suck the cold air blown out from the air conditioner that supplies the information processing equipment room into the rack A semi-cylindrical contraction reducing device that protrudes from the edge of the intake surface at the end of the rack row so that the peripheral surface swells.

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