JP6235825B2 - Air conditioning system - Google Patents

Description

  The present invention relates to an air conditioning system.

  2. Description of the Related Art Conventionally, an air conditioning system that cools information processing equipment in an information processing equipment room in which racks that contain information processing equipment are arranged has been proposed (for example, Patent Document 1). Such an air conditioning system generally includes a cooling fan in a rack accommodating information processing equipment, and supplies cooling air from a space (cold aisle) provided on the intake side of the cooling fan through the inside of the rack. The information processing device accommodated in the rack is cooled by sending air to a space (hot aisle) provided on the exhaust side of the cooling fan.

  Here, the air blown to the hot aisle needs to be exhausted by any method, but in the air conditioning system according to Patent Document 1, two types of methods are disclosed as a method for performing such exhaust. . In one method, the ceiling is formed by a double ceiling structure in which a ceiling board is arranged below the ceiling slab, and the air inside the hot aisle is connected to the ceiling board through an opening provided in the ceiling board. It is a method of exhausting into the ceiling space formed between the ceiling slab. In the other method, the floor is formed by a double floor structure in which a floor board is disposed above the floor slab, and the air inside the hot aisle is passed through the opening provided in the floor board and the floor board and the floor slab. It is the method of exhausting to the underfloor space formed between.

JP 2012-32133 A

  However, in the conventional air-conditioning system described in Patent Document 1, the hot aisle air is exhausted through either the opening provided in the ceiling board or the opening provided in the floor board. In this case, the pressure distribution becomes non-uniform. That is, in the method of exhausting through the opening provided in the ceiling board, the pressure near the ceiling is greater than the pressure in the vicinity of the floor, and in the method of exhausting through the opening provided in the floor plate, The pressure is greater than the pressure near the ceiling.

  When the pressure distribution becomes uneven in this way, a phenomenon that a hot spot occurs on the cold aisle side may occur. That is, taking a method of exhausting through an opening provided in the ceiling board as an example, since the pressure near the hot aisle floor is small, the generation of Karman vortex due to the air flow rate on the cold aisle side causes the cold aisle side A large negative pressure may be generated. In such a case, if the negative pressure generated on the cold aisle side is larger than the negative pressure generated on the hot aisle side, there is a phenomenon in which a reverse flow occurs from the hot aisle side to the cold aisle side. A hot spot is generated on the aisle side. Since it has been pointed out that the hot spot generated on the cold aisle side in this way leads to a malfunction of the server, an air conditioning system capable of preventing the occurrence of such a hot spot has been desired. .

  The present invention has been made in view of the above, and by reducing the possibility that a hot spot will occur on the cold aisle side, the possibility of a malfunction occurring in an information processing device is reduced. It aims at providing the air-conditioning system which can plan.

In order to solve the above-described problem and achieve the object, the air conditioning system according to claim 1 includes a first space and a second space that are two spaces positioned across a cooling target space where information processing devices are arranged. An air conditioning system that cools the information processing device by forming a flow of cooling air from the first space to the second space via the space to be cooled in the space, and to the first space An air conditioning means for supplying cooling air and an upper area, which is an upper area in the second space, perform intake air, and the intake air is a first exhaust path for exhausting the cooling air. An upper exhaust unit that exhausts air to a first exhaust path that does not belong to any of the target space, the first space, and the second space, and a lower region that is a lower region in the second space. Do the inhalation concerned Lower exhaust means for exhausting the air to a second exhaust path for exhausting to a second exhaust path that does not belong to any one of the space to be cooled, the first space, and the second space; The space to be cooled, the first space, and the second space are all internal spaces of the same room, and the first exhaust path is a ceiling chamber formed in the ceiling of the room The second exhaust path is an underfloor chamber formed under the floor of the room, the ceiling chamber communicates with the upper exhaust means of each of the plurality of second spaces, and the underfloor chamber includes a plurality of underfloor chambers. The two spaces to be cooled are arranged in parallel so as to communicate with the lower exhaust means of each of the second spaces, sandwich the first space, and be adjacent to the first space. The air conditioning means includes the two cooling pairs. From different horizontal directions from the arrangement direction of the space, for supplying cooling air to the first space.

Further, the air conditioning system according to claim 2 is the first space and the second space, which are two spaces located across the cooling target space where the information processing device is arranged, from the first space to the cooling target space. An air conditioning system that cools the information processing device by forming a flow of cooling air to the second space via the air conditioning unit that supplies the cooling air to the first space, and the second It is arranged in an upper region, which is an upper region in the space, and performs intake, and the intake air is a first exhaust path for exhausting, which is the cooling target space, the first space, and the second An upper exhaust unit that exhausts air to a first exhaust path that does not belong to any of the spaces, and a lower region that is a lower region in the second space performs intake, and the intake air is used for exhaust In the second exhaust passage Te, the space to be cooled, said first space, and and a lower exhaust means for exhausting to the second exhaust passage that does not belong to any of the second space, wherein the space to be cooled, the first space and, The second space is an internal space of the same room, and the first exhaust path and the second exhaust path are both ceiling chambers formed on the ceiling of the room, and the lower exhaust means These are the edge parts by the side of the said lower area in the duct which connects the said ceiling chamber and the said lower area mutually.

According to the air conditioning system of the first aspect, the second space is provided with the upper exhaust unit that is disposed in the upper region in the second space and performs intake, and the lower exhaust unit that is disposed in the lower region and performs intake. The pressure in the second space can be made uniform, and air flows backward from the second space to the first space through the space to be cooled due to the non-uniform pressure in the second space, and a hot spot is generated in the first space. Since it is possible to reduce the possibility, it is possible to reduce the possibility that a problem occurs in the information processing device. Further, in the conventional air conditioning system, when a hot spot occurs in the first space, temperature unevenness occurs in the first space, so the temperature of the cooling air supplied from the air conditioning means to the first space is Although it was set to a lower temperature (for example, 16 ° C.) assuming the occurrence of a hot spot, the possibility of the occurrence of a hot spot can be reduced according to the air conditioning system. Therefore, it is possible to set the temperature to an appropriate temperature (for example, 20 ° C.), so that it is possible to reduce the conveyance power of the air conditioning system and improve the energy saving performance.
In addition, since the air in the second space is exhausted to the ceiling chamber and the underfloor chamber, the system can be constructed with an extremely simple configuration using the ceiling chamber and the underfloor chamber as the exhaust passage, and the workability of the system can be improved. It becomes possible. In addition, since both the ceiling chamber and the underfloor chamber are used as exhaust passages, there is no need to provide a separate space for use as an exhaust passage, and a space-saving system can be constructed. Can be kept small.
The air conditioning means supplies cooling air to the first space from a horizontal direction different from the direction in which the two cooling target spaces are juxtaposed, so that the first space is sandwiched between the first space and the first space. Even if the two cooling target spaces are arranged side by side so as to be adjacent to each other, cooling air can be supplied to the first space, and it is also used in a space where a plurality of information processing devices are arranged in parallel. A possible system can be constructed.

According to the air conditioning system of claim 2, since it includes an upper exhaust means for performing intake is arranged above the region of the second space, and a lower exhaust means for performing intake is arranged in the lower region, the second space The pressure in the second space can be made uniform, and air flows backward from the second space to the first space through the space to be cooled due to the non-uniform pressure in the second space, and a hot spot is generated in the first space. Since it is possible to reduce the possibility, it is possible to reduce the possibility that a problem occurs in the information processing device. Further, in the conventional air conditioning system, when a hot spot occurs in the first space, temperature unevenness occurs in the first space, so the temperature of the cooling air supplied from the air conditioning means to the first space is Although it was set to a lower temperature (for example, 16 ° C.) assuming the occurrence of a hot spot, the possibility of the occurrence of a hot spot can be reduced according to the air conditioning system. Therefore, it is possible to set the temperature to an appropriate temperature (for example, 20 ° C.), so that it is possible to reduce the conveyance power of the air conditioning system and improve the energy saving performance.
Further, since the lower exhaust means is an end portion on the lower area side of the duct connecting the ceiling chamber and the lower area to each other, the air sucked by the lower exhaust means is also exhausted to the ceiling chamber so that the lower floor chamber is exhausted. It is possible to construct a system that can be used for purposes other than the above, and has an expanded range of uses for the underfloor chamber.

1 is a perspective view of an air conditioning system according to Embodiment 1 of the present invention. It is sectional drawing of the air conditioning system by the XZ plane of FIG. It is sectional drawing of the air conditioning system by the XZ plane of FIG. 1 based on Embodiment 2 of this invention.

  Embodiments of an air conditioning system according to the present invention will be described below in detail with reference to the accompanying drawings. [I] First, the basic concept of each embodiment will be described, then [II] the specific contents of each embodiment will be described, and [III] Finally, modifications to each embodiment will be described. However, the present invention is not limited to each embodiment.

[I] Basic concept of each embodiment First, the basic concept of each embodiment will be described. The air conditioning system according to each embodiment is an air conditioning system that cools information processing equipment. Here, the use of the information processing device is arbitrary, but each embodiment will be described as being used as a device for processing various data in a large-scale information processing facility such as a data center. In addition, the number of information processing devices installed in the information processing facility is arbitrary, and the air conditioning system can be configured by including at least one information processing device. It is assumed that the equipment is installed. Further, in each embodiment, one room in which multiple information processing devices are installed in an information processing facility will be described with attention, and the inside of the room will be referred to as “indoor” as necessary below. I will explain.

[II] Specific Contents of Each Embodiment Next, specific contents of the embodiments according to each invention will be described.

(Embodiment 1)
First, the first embodiment will be described. This form is a form provided with an underfloor exhaust port as a lower exhaust means.

(Constitution)
First, the configuration of the air conditioning system 1 according to the first embodiment will be described. FIG. 1 is a perspective view of an air conditioning system 1 according to the first embodiment. FIG. 2 is a cross-sectional view (cross-sectional view through a rack 10 described later) of the air-conditioning system 1 along the XZ plane of FIG. As shown in FIGS. 1 and 2, the air conditioning system 1 according to the present embodiment schematically includes a rack 10, an air conditioner 20, a rectifying member 30, a ceiling exhaust port 40, an underfloor exhaust port 50, a cold aisle capping. 60 and hot aisle capping 70. In the following description, the X direction shown in FIG. 1 is referred to as “width direction”, the Y direction as “length direction”, and the Z direction as “height direction” as necessary.

(Configuration-room)
Here, first, a room in which each component of the air conditioning system 1 is arranged will be described. First, in this room, as shown in FIG. 1, a ceiling material 3 is installed below the ceiling slab 2 and a space between the ceiling slab 2 and the ceiling material 3 is used as a ceiling chamber 4. The floor material 6 is installed above the floor slab 5, and a space between the floor slab 5 and the floor material 6 is used as a subfloor chamber 7. In addition, about a concrete means for forming such a double ceiling structure and a double floor structure, since a well-known means can be used, it abbreviate | omits. Here, a space that is formed between the flooring 6 and the ceiling material 3 and in which the information processing device is installed will be referred to as an “information processing space” as necessary. Note that the information processing space and the specific size and shape of the ceiling chamber 4 and the underfloor chamber 7 are arbitrary, but in the first embodiment, the information processing space includes at least a rack 10 containing information processing equipment. It is assumed that the space has a width and a length that can be arranged in plural, and the ceiling chamber 4 and the underfloor chamber 7 have the same width and length as the information processing space, and are different in height. Will be described. Note that air is supplied to the information processing space via the air conditioner 20, and the air supplied from the air conditioner 20 to the information processing space is exhausted to the ceiling chamber 4 via the ceiling exhaust port 40, or The exhaust gas is exhausted to the underfloor chamber 7 through the underfloor exhaust port 50. The ceiling chamber 4 and the underfloor chamber 7 are provided with a known exhaust fan, a total heat exchanger, and the like. The ceiling chamber 4 and the underfloor chamber 7 are connected to the ceiling chamber 4 and the underfloor chamber 7 through the exhaust fan and the total heat exchanger. The supplied air is discharged to an external space (for example, indoors).

(Configuration-Rack)
The rack 10 is a storage means for storing information processing equipment. Although the specific shape of the rack 10 is arbitrary, the first embodiment has a housing formed as a hollow rectangular parallelepiped as shown in FIG. In the following description, it is assumed that the rack 10 accommodates the information processing apparatus. In the following description, the space inside the housing in the rack 10 (the space in which the information processing device is arranged) will be referred to as a “cooling target space” as necessary.

  Here, the rack 10 is devised for cooling the information processing device. Specifically, first, a mesh-shaped ventilation hole is provided on one side surface of the housing of the rack 10 and the other side surface provided at a position facing the rack. A cooling fan for blowing air is provided at any position in the rack 10. By operating the cooling fan in the rack 10 configured as described above, the air in the space outside the rack 10 (hereinafter referred to as the first space) is changed to a vent hole provided on one side of the rack 10 casing, the rack The air is blown into the space on the opposite side (hereinafter referred to as the second space) outside the rack 10 through the inside of the rack 10 and the ventilation holes provided on the other side surface of the rack 10 in order. Here, in the following description, one side of the above-described rack 10 will be referred to as a “suction surface” and the other side as a “blowing surface” as necessary.

  A plurality of racks 10 in the room are arranged in parallel along a specific direction (the length direction in the first embodiment) to form a row of racks 10 (hereinafter referred to as a rack row). The racks 10 constituting the rack row are arranged such that the direction of the suction surface and the direction of the blowing surface are aligned. In addition, a plurality of such rack rows are arranged in the room along a direction orthogonal to the specific direction (in the first embodiment, the width direction). And these rack row | line | columns are arrange | positioned so that each suction surface and blowing surface may face each other, The space provided in the suction surface side of the rack row | line in this way is called "cold aisle 8", A space provided on the outlet surface side of the rack row is referred to as “hot aisle 9” and will be described below. That is, a plurality of spaces to be cooled are arranged so as to sandwich the cold aisle 8 and adjacent to the cold aisle 8, and adjacent to the hot aisle 9 so as to sandwich the hot aisle 9. A plurality of cooling target spaces are arranged so as to.

(Configuration-air conditioner)
The air conditioner 20 is air conditioning means that generates cooling air and supplies the generated cooling air to the cold aisle 8. The specific shape and configuration of the air conditioner 20 is arbitrary, and can be formed as, for example, a water-cooled or air-cooled known air conditioner. In the first embodiment, FIG. In the following description, the fan coil unit is a known fan coil unit formed in a substantially rectangular parallelepiped shape.

  Here, the installation position of the air conditioner 20 will be described. The air conditioner 20 is arbitrary as long as it can supply cooling air to the cold aisle 8, and can be installed at an arbitrary position. However, if cooling air is supplied toward the cold aisle 8 from the same direction as the parallel arrangement direction of the space to be cooled, the rack 10 prevents air blowing. Therefore, it is preferable that the installation position of the air conditioner 20 be an installation position where cooling air can be blown to the cold aisle 8 from a direction different from the same direction as the parallel arrangement direction of the cooling target space. As such an installation position, for example, a position where cooling air is supplied toward the cold aisle 8 from an oblique direction having a predetermined angle with respect to the parallel arrangement direction of the cooling target space, or a vertically downward direction below the floor of the cold aisle 8 For example, a position where cooling air is supplied toward the cold aisle 8 can be considered. In the present embodiment, the description will be made assuming that the cooling air is disposed at a position where cooling air is supplied from the direction orthogonal to the parallel arrangement direction of the space to be cooled toward the cold aisle 8 in a horizontal plan view. Specifically, a plurality of air conditioners 20 are arranged along the width direction in a lateral space in the length direction of the space where the rack row is arranged. And each air conditioner 20 is arrange | positioned so that the surface (henceforth a cooling air blowing surface) which blows off cooling air may become in parallel with the parallel arrangement direction of space to be cooled.

(Configuration-rectifying member)
The rectifying member 30 is a diffusing unit for diffusing the cooling air blown from the air conditioner 20. Although the specific configuration of the rectifying member 30 is arbitrary, in the first embodiment, the rectifying member 30 is arranged in parallel to the cooling air blowing surface at a position in front of the cooling air blowing surface of the air conditioner 20. It will be described as a non-woven fabric. The rectifying member 30 configured in this manner diffuses the cooling air blown from the air conditioner 20 along the width direction, so that the cooling air can be evenly supplied to each cold aisle 8. .

(Configuration-Ceiling exhaust port)
The ceiling exhaust port 40 is an upper exhaust unit that is disposed in an upper region, which is an upper region of the hot aisle 9, performs intake air and exhausts the intake air to the ceiling chamber 4. Specifically, the ceiling exhaust port 40 is formed as a ventilation hole provided in a region surrounded by the hot aisle capping 70 in the ceiling material 3, and an exhaust fan is provided inside the ventilation hole. Then, by operating this exhaust fan, the exhaust inside the hot aisle 9 can be blown into the ceiling chamber 4. The “upper region” where the ceiling exhaust port 40 is installed is an upper region when the hot aisle 9 is divided into two parts.

  The ceiling exhaust port 40 may have any configuration as long as it can guide the exhaust inside the hot aisle 9 to the ceiling chamber 4. For example, in the first embodiment, an explanation will be given assuming that an exhaust fan is provided in the ceiling exhaust port 40 and intake is performed by this exhaust fan. However, even if the ceiling exhaust port 40 itself does not perform intake. I do not care. Specifically, the ceiling exhaust port 40 is formed as a simple ventilation hole having no exhaust fan, and the pressure in the ceiling chamber 4 is made smaller than the pressure in the hot aisle 9, thereby exhausting the exhaust inside the hot aisle 9 to the ceiling. You may lead to the chamber 4.

(Configuration-Underfloor exhaust port)
The underfloor exhaust port 50 is a lower exhaust unit that is disposed in a lower region, which is a lower region of the hot aisle 9, performs intake air and exhausts the intake air to the underfloor chamber 7. Specifically, the underfloor exhaust port 50 is formed as a vent hole provided in a region surrounded by the hot aisle capping 70 and the blowout surface of the rack 10 in the flooring 6, and an exhaust fan is provided inside the vent hole. Is provided. Then, by operating this exhaust fan, the exhaust inside the hot aisle 9 can be blown into the underfloor chamber 7. The “lower region” where the underfloor exhaust port 50 is installed is a lower region when the hot aisle 9 is divided into upper and lower parts.

  The underfloor exhaust port 50 may have any configuration as long as the exhaust in the hot aisle 9 can be guided to the underfloor chamber 7. For example, in the present embodiment, an explanation will be given on the assumption that an exhaust fan is provided in the underfloor exhaust port 50 and intake is performed by this exhaust fan. However, the underfloor exhaust port 50 itself may not perform intake. Absent. Specifically, the underfloor exhaust port 50 is formed as a simple ventilation hole having no exhaust fan, and the pressure in the underfloor chamber 7 is made smaller than the pressure of the hot aisle 9, thereby exhausting the exhaust inside the hot aisle 9 under the floor. You may lead to the chamber 7.

(Configuration-cold aisle capping)
The cold aisle capping 60 is cooling air leakage prevention means for preventing the cooling air supplied to the inside of the cold aisle 8 from leaking out of the cold aisle 8. Specifically, a plate-like member having the same length as each rack 10 and the same width as the width between two racks 10 arranged with the cold aisle 8 interposed therebetween, The plate 10 is formed as a plate-like member that covers the cold aisle 8 from the upper end of the suction surface to the upper end of the suction surface of another rack 10 adjacent to the rack 10 via the cold aisle 8.

(Configuration-hot aisle capping)
The hot aisle capping 70 is exhaust leakage prevention means for preventing air inside the hot aisle 9 from leaking out of the hot aisle 9. Specifically, it is formed of two types of members, a plate-like member 70a and a plate-like member 70b. The plate-like member 70 a is a plate-like member having the same length as each rack 10 and the same height as the height from the upper surface of each rack 10 to the ceiling material 3, and the blowout surface on the upper surface of each rack 10. It is a plate-like member that covers the hot aisle 9 across the ceiling material 3 from the end on the side. The plate-like member 70b is a plate having the same width as the width between the two racks 10 arranged with the hot aisle 9 interposed therebetween, and the same height as the height from the floor material 6 to the ceiling material 3. It is a plate-shaped member that is disposed at each end in the length direction between two racks 10 that are disposed across the hot aisle 9.

  By providing the cold aisle capping 60 and the hot aisle capping 70 in this way, heat exchange is not performed between the air in the cold aisle 8 and the air in the hot aisle 9, and thus the air conditioning load of the air conditioner 20 is reduced. It becomes possible.

(processing)
The air conditioning process executed by the air conditioning system 1 configured as described above will be described. First, the air conditioner 20 generates cooling air and blows it out from the blowing surface. The cooling air thus blown out from the air conditioner 20 is diffused along the width direction by the rectifying member 30 so that the cooling air is blown to the cold aisle 8 of each rack row. The cooling air blown to the cold aisle 8 is blown out as exhaust to the hot aisle 9 through the inside of the rack 10 by a cooling fan provided in the rack 10. At this time, the information processing device accommodated in the rack 10 is cooled.

  Then, the exhaust gas blown out to the hot aisle 9 is blown to the ceiling chamber 4 through the ceiling exhaust port 40 or to the underfloor chamber 7 through the underfloor exhaust port 50. The exhaust air blown to the ceiling chamber 4 or the underfloor chamber 7 in this way is passed through an exhaust fan (not shown) or a total heat exchanger (not shown) disposed in the ceiling chamber 4 or the underfloor chamber 7. You may exhaust outside. Alternatively, the air conditioner 20 may be taken into the air conditioner 20 again, and the air conditioner 20 may generate the cooling air using the air thus taken.

  Thus, in this embodiment, since the warm air inside the hot aisle 9 is exhausted not only from either the ceiling exhaust port 40 or the underfloor exhaust port 50, but also from both of them, the upper and lower pressures in the hot aisle 9 are reduced. The pressure of the hot aisle 9 can be made uniform. Therefore, it is possible to reduce the possibility of Karman vortices due to the air flow velocity on the cold aisle 8 side near the floor surface of the hot aisle 9.

  Note that “the upper and lower pressures in the hot aisle 9 are equal” does not necessarily mean that the pressure in the upper region and the pressure in the lower region in the hot aisle 9 are the same, and at least in both the upper region and the lower region. It includes a state where the upper and lower pressures in the hot aisle 9 are equalized by exhausting. However, it is possible to reduce the possibility that Karman vortices are generated when the pressure in the upper region and the pressure in the lower region are close to the same. For example, the air flow rate of the exhaust fan provided at the ceiling exhaust port 40 The pressure in the upper region and the pressure in the lower region may be adjusted by adjusting the air flow rate of the exhaust fan provided at the underfloor exhaust port 50.

(Effect of Embodiment 1)
The air conditioning system 1 according to the first embodiment includes the ceiling exhaust port 40 that is disposed in the upper region of the hot aisle 9 and performs intake, and the underfloor exhaust port 50 that is disposed in the lower region and performs intake. Therefore, the pressure of the hot aisle 9 can be made uniform, and when the pressure of the hot aisle 9 is not uniform, the air flows back from the hot aisle 9 to the cold aisle 8 through the space to be cooled. It is possible to reduce the possibility that a spot will be generated, and to reduce the possibility that a malfunction will occur in the information processing device due to the hot spot generated in this way. Further, in the conventional air conditioning system, when a hot spot occurs in the cold aisle 8, temperature unevenness occurs in the cold aisle 8. Therefore, the temperature of the cooling air supplied from the air conditioner 20 to the cold aisle 8 is set. However, according to the air conditioning system 1, the possibility that a hot spot is generated can be reduced, so that the hot spot can be reduced. Therefore, it is possible to set the temperature to an appropriate temperature (for example, 20 ° C.) that does not assume the occurrence of this, and thus it is possible to reduce the conveyance power of the air conditioning system 1 and improve the energy saving performance.

  Further, since the air in the hot aisle 9 is exhausted to the ceiling chamber 4 and the underfloor chamber 7, the system can be constructed with an extremely simple configuration using the ceiling chamber 4 and the underfloor chamber 7 as an exhaust path, and the workability of the system is improved. Can be achieved. Further, since both the ceiling chamber 4 and the underfloor chamber 7 are used as exhaust passages, it is not necessary to provide a separate space for use as an exhaust passage, and a space-saving system can be constructed. The floor height can be kept small.

  Further, since the air conditioner 20 supplies cooling air to the cold aisle 8 from a direction different from the direction in which the two cooling target spaces are arranged side by side, the cold aisle 8 is sandwiched between the cold aisle 8 and the cold aisle 8. Even when the two spaces to be cooled are arranged side by side so as to be adjacent to each other, the cooling air can be supplied to the cold aisle 8 and used even in a space in which a plurality of information processing devices are arranged in parallel. A possible system can be constructed.

(Embodiment 2)
Next, the second embodiment will be described. In the second embodiment, an exhaust duct 110 is provided as a lower exhaust means. In addition, about the component similar to Embodiment 1, the same code | symbol or name as used in Embodiment 1 is attached | subjected as needed, and the description is abbreviate | omitted.

(Constitution)
First, the configuration of the air conditioning system 100 according to Embodiment 2 will be described. FIG. 3 is a cross-sectional view (cross-sectional view through the rack 10) of the air-conditioning system according to the second embodiment, taken along the XZ plane of FIG. As shown in FIG. 3, the air conditioning system 100 according to the second embodiment schematically includes a rack 10, an air conditioner 20, a rectifying member 30, a ceiling exhaust port 40, an exhaust duct 110, a cold aisle capping 60, and A hot aisle capping 70 is provided. Thus, in this Embodiment 2, the underfloor exhaust port 50 is not provided, but the exhaust duct 110 is provided instead. In the first embodiment, the floor material 6 is provided at the position where the underfloor exhaust port 50 is disposed, and the hot aisle 9 and the underfloor chamber 7 are not spatially connected. In addition, since components other than the exhaust duct 110 can be configured in the same manner as those in the first embodiment, detailed description thereof is omitted.

(Configuration-exhaust duct)
The exhaust duct 110 is an exhaust means for connecting the ceiling chamber 4 and the lower region of the hot aisle 9 to each other. Specifically, the exhaust duct 110 is formed as a duct having an arbitrary diameter, and is disposed substantially along the height direction inside the hot aisle 9. The duct port located at the upper end is located inside the ceiling chamber 4, while the duct port located at the lower end is located in the lower region of the hot aisle 9.

  Although the number of exhaust ducts 110 installed is arbitrary, in the second embodiment, it is assumed that a plurality of exhaust ducts 110 are installed at predetermined intervals along the length direction in each hot aisle 9. explain.

(processing)
Then, the process performed in the air conditioning system 100 comprised in this way is demonstrated. First, when the air conditioning system 100 is operated, the air conditioner 20 blows out cooling air from the blowing surface. The cooling air thus blown out from the air conditioner 20 is diffused along the width direction by the rectifying member 30 so that the cooling air is blown to the cold aisle 8 of each rack row. Then, the cooling air blown to the cold aisle 8 is blown to the hot aisle 9 through the inside of the rack 10 by a cooling fan provided in the rack 10. At this time, the information processing device accommodated in the rack 10 is cooled. Then, the exhaust gas blown out to the hot aisle 9 is exhausted to the ceiling chamber 4 through the ceiling exhaust port 40, and exhausted to the ceiling chamber 4 through the exhaust duct 110 by being sucked into the suction port of the exhaust duct 110. Divided into exhaust.

  Here, according to the second embodiment, since the exhaust is not blown into the underfloor chamber 7, the underfloor chamber 7 can be used for other purposes. For example, the cooling air may be supplied from the underfloor chamber 7 toward the cold aisle 8 by using the underfloor chamber 7 as a ventilation path for the cooling air supplied by the air conditioner 20.

(Effect of Embodiment 2)
According to the air conditioning system 100 described in the second embodiment, the lower exhaust unit is an end portion on the lower region side of the duct that connects the ceiling chamber 4 and the lower region to each other, and therefore the air is sucked by the lower exhaust unit. By exhausting the air to the ceiling chamber 4 as well, the underfloor chamber 7 can be used for purposes other than the exhaust path, and it is possible to construct a system with a wider range of uses for the underfloor chamber 7.

[III] Modifications to Each Embodiment While each embodiment according to the present invention has been described above, the specific configuration and means of the present invention are the same as the technical idea of each invention described in the claims. Modifications and improvements can be arbitrarily made within the range. Hereinafter, such a modification will be described.

(About problems to be solved and effects of the invention)
First, the problems to be solved by the invention and the effects of the invention are not limited to the above-described contents, and the present invention solves the problems not described above or has the effects not described above. There are also cases where only some of the described problems are solved or only some of the described effects are achieved. For example, even if at least the occurrence of hot spots in the cold aisle 8 cannot be prevented, if air conditioning can be achieved by a system different from the conventional one, the problem of the present invention is solved.

(About dimensions and materials)
The dimensions, shapes, ratios, and the like of the respective parts of the air conditioning systems 1 and 100 described in the detailed description of the invention and the drawings are merely examples, and may be any other dimensions, shapes, ratios, and the like.

(About the cool air fan installed in the rack)
In the first and second embodiments, the cold aisle 8 provided in the rack 10 exhausts the air in the cold aisle 8 to the hot aisle 9 through the inside of the rack 10, but such a cold air fan is not necessarily provided in the rack 10. There is no need. For example, a cold air fan provided in the information processing device itself may be used.

(Exhaust duct)
In the second embodiment, air in the lower region of the hot aisle 9 is blown to the ceiling chamber 4 by the exhaust duct 110, but a configuration opposite to this may be adopted. That is, the duct port provided at the upper end of the exhaust duct 110 is disposed in the upper region of the hot aisle 9, and the duct port provided at the lower end of the exhaust duct 110 is disposed in the underfloor chamber 7. And by blowing the air of the hot aisle 9 to the underfloor chamber 7 through the exhaust duct 110, the pressure of the hot aisle 9 can be made uniform without using the ceiling chamber 4 as an exhaust path.

(About cold aisle capping)
In each of the embodiments, the cold aisle capping 60 is described as being installed. However, the cold aisle capping 60 may not be installed. In particular, according to each embodiment, the occurrence of hot spots in the cold aisle 8 can be prevented without installing the cold aisle capping 60. Thus, according to the configuration in which the cold aisle capping 60 is not installed, it is possible to reduce the cost required to install the cold aisle capping 60 and the cleaning cost of the cold aisle capping 60. Furthermore, by not installing the cold aisle capping 60 that may have a sense of design pressure, it is possible to reduce the stress on the user.

(Appendix)
The air conditioning system according to appendix 1 includes a first space and a second space, which are two spaces located across a cooling target space where information processing devices are arranged, from the first space through the cooling target space. An air conditioning system that cools the information processing device by forming a flow of cooling air to the second space, the air conditioning means for supplying cooling air to the first space, and an upper portion in the second space Is disposed in an upper region, which is a region of the above, and performs intake, and the intake air is a first exhaust passage for exhausting, and is any one of the cooling target space, the first space, and the second space An upper exhaust means for exhausting to a first exhaust path that does not belong to any one of the above, and a lower region that is a lower region in the second space to perform intake air, and the intake air is supplied to the second exhaust region for exhaust Before the exhaust passage Provided space to be cooled, said first space, and a lower exhaust means for exhausting to the second exhaust passage that does not belong to any of the second space.

  Further, the air conditioning system according to attachment 2 is the air conditioning system according to attachment 1, wherein the cooling target space, the first space, and the second space are all internal spaces of the same room, The exhaust path is a ceiling chamber formed in the back of the ceiling of the room, and the second exhaust path is an underfloor chamber formed under the floor of the room.

  Further, the air conditioning system according to attachment 3 is the air conditioning system according to any one of attachments 1 or 2, wherein the space to be cooled, the first space, and the second space are all in the same room. The first exhaust path and the second exhaust path are ceiling chambers formed on the back of the ceiling of the room, and the lower exhaust means connects the ceiling chamber and the lower region to each other. It is an edge part by the side of the lower field in a duct connected to.

  Further, the air conditioning system according to appendix 4 is the air conditioning system according to any one of appendices 1 to 3, so as to sandwich the first space and adjacent to the first space. The two cooling target spaces are arranged side by side, and the air conditioning unit supplies cooling air to the first space from a direction different from the direction in which the two cooling target spaces are arranged side by side.

(Additional effects)
According to the air conditioning system described in the supplementary note 1, the air conditioning system includes the upper exhaust unit that is disposed in the upper region in the second space and performs the intake, and the lower exhaust unit that is disposed in the lower region and performs the intake. Pressure can be made uniform, and due to non-uniform pressure in the second space, air can flow back from the second space to the first space through the space to be cooled, causing a hot spot in the first space. Therefore, it is possible to reduce the possibility that a problem occurs in the information processing device. Further, in the conventional air conditioning system, when a hot spot occurs in the first space, temperature unevenness occurs in the first space, so the temperature of the cooling air supplied from the air conditioning means to the first space is Although it was set to a lower temperature (for example, 16 ° C.) assuming the occurrence of a hot spot, the possibility of the occurrence of a hot spot can be reduced according to the air conditioning system. Therefore, it is possible to set the temperature to an appropriate temperature (for example, 20 ° C.), so that it is possible to reduce the conveyance power of the air conditioning system and improve the energy saving performance.

  According to the air conditioning system described in appendix 2, since the air in the second space is exhausted to the ceiling chamber and the underfloor chamber, the system can be constructed with an extremely simple configuration using the ceiling chamber and the underfloor chamber as an exhaust path. It becomes possible to improve the workability. In addition, since both the ceiling chamber and the underfloor chamber are used as exhaust passages, there is no need to provide a separate space for use as an exhaust passage, and a space-saving system can be constructed. Can be kept small.

  According to the air conditioning system described in appendix 3, the lower exhaust means is an end portion on the lower area side of the duct connecting the ceiling chamber and the lower area to each other, so that air sucked by the lower exhaust means also enters the ceiling chamber. By evacuating, the underfloor chamber can be used for purposes other than the exhaust path, and it is possible to construct a system with a wider range of uses for the underfloor chamber.

  According to the air conditioning system described in appendix 4, the air conditioning means supplies the cooling air to the first space from a direction different from the direction in which the two cooling target spaces are arranged side by side. And even if it is a case where two said cooling object spaces are arranged in parallel so that it may adjoin to said 1st space, cooling air can be supplied to the 1st space, and a plurality of information processing equipment It is possible to construct a system that can be used even in a parallel space.

DESCRIPTION OF SYMBOLS 1,100 Air-conditioning system 2 Ceiling slab 3 Ceiling material 4 Ceiling chamber 5 Floor slab 6 Floor material 7 Under floor chamber 8 Cold aisle 9 Hot aisle 10 Rack 20 Air conditioner 30 Rectification member 40 Ceiling exhaust outlet 50 Under floor exhaust outlet 60 Cold aisle capping 70 Hot aisle capping 70a, 70b Plate member 110 Exhaust duct

Claims (2)

In the first space and the second space, which are two spaces located across the cooling target space where the information processing device is disposed, the cooling air from the first space to the second space through the cooling target space An air conditioning system that cools the information processing device by forming a flow,
Air conditioning means for supplying cooling air to the first space;
Arranged in an upper region, which is an upper region in the second space, performs intake, and the intake air is a first exhaust path for exhausting, the cooling target space, the first space, and Upper exhaust means for exhausting to a first exhaust path not belonging to any of the second spaces;
Arranged in a lower region, which is a lower region in the second space, performs intake, and the intake air is a second exhaust path for exhausting, the cooling target space, the first space, and A lower exhaust means for exhausting to a second exhaust path that does not belong to any of the second spaces ,
The cooling target space, the first space, and the second space are all internal spaces of the same room,
The first exhaust path is a ceiling chamber formed in the ceiling of the room,
The second exhaust path is an underfloor chamber formed under the floor of the room,
The ceiling chamber communicates with the upper exhaust means of each of the plurality of second spaces,
The underfloor chamber communicates with the lower exhaust means of each of the plurality of second spaces,
The two cooling target spaces are juxtaposed so as to sandwich the first space and adjacent to the first space,
The air conditioning means supplies cooling air to the first space from a horizontal direction different from the parallel direction of the two cooling target spaces.
Air conditioning system. In the first space and the second space, which are two spaces located across the cooling target space where the information processing device is disposed, the cooling air from the first space to the second space through the cooling target space An air conditioning system that cools the information processing device by forming a flow,
Air conditioning means for supplying cooling air to the first space;
Arranged in an upper region, which is an upper region in the second space, performs intake, and the intake air is a first exhaust path for exhausting, the cooling target space, the first space, and Upper exhaust means for exhausting to a first exhaust path not belonging to any of the second spaces;
Arranged in a lower region, which is a lower region in the second space, performs intake, and the intake air is a second exhaust path for exhausting, the cooling target space, the first space, and A lower exhaust means for exhausting to a second exhaust path that does not belong to any of the second spaces,
The cooling target space, the first space, and the second space are all internal spaces of the same room,
The first exhaust path and the second exhaust path are both ceiling chambers formed on the ceiling of the room,
The lower exhaust means is an end portion on the lower area side in a duct connecting the ceiling chamber and the lower area to each other.
Air conditioning system.

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