JP6570902B2 - Air conditioning system - Google Patents

Description

  The present invention relates to an air conditioning system.

  With the progress of the information society in recent years, the construction of data centers in which information communication devices (hereinafter also referred to as “ICT devices”) that provide various services are being constructed. In the data center, in order to stably operate the ICT apparatus, management is performed so that the server room in which the ICT apparatus is installed is always maintained at a temperature suitable for the operation of the ICT apparatus. The maintenance of the temperature is performed by an air conditioning system provided in the data center (see, for example, Patent Document 1).

  Patent Document 1 discloses a technique in which conditioned air is blown out from a side wall of a server room along a space between a plurality of rack rows in which ICT devices are installed. By doing in this way, the power reduction of the air-conditioning mechanism required in order to supply conditioned air to a server room is achieved.

Japanese Patent No. 5263840

  However, the technique disclosed in Patent Document 1 described above has a problem that the range in which the air volume and the air speed of the conditioned air blown out to the server room can be adjusted is easily limited by the arrangement of the rack rows. In other words, in the above technique, the arrangement position of the indoor unit of the air conditioning system that can blow out the conditioned air along the space between the plurality of rack rows is limited. There was a problem that there was a limit to the improvement of sex.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an air-conditioning system capable of increasing the degree of freedom of arrangement of air-conditioning equipment and improving the cooling performance of the ICT device. .

In order to achieve the above object, the present invention provides the following means.
The air conditioning system of the present invention is an air conditioner that sucks and cools exhausted air discharged from electronic devices housed in a plurality of racks arranged side by side, and supplies the cooled conditioned air to the electronic devices, Of the space between the equipment room in which a plurality of racks are arranged and the air conditioner arranged outside the equipment room, at least a space between the plurality of racks and used by the electronic device for cooling A chamber portion that is disposed at a position facing the suction space for sucking air and into which the conditioned air flows from the air conditioner, and the chamber portion is provided on the side wall that forms a partition from the device room. It has a blowing part which blows off the conditioned air in the direction where the suction space extends in the position which opposes.

  According to the air conditioning system of the present invention, it is possible to determine the arrangement position of the air conditioner without being constrained by the arrangement of the racks by providing the chamber portion between the equipment room where the plurality of racks are arranged and the air conditioner. It becomes possible. In other words, conditioned air is supplied from the air conditioner to the chamber portion and blown out from the blowout portion of the chamber portion toward the suction space that is a space sandwiched between the racks. Even if they do not match, conditioned air can be supplied to the suction space. For this reason, the degree of freedom of arrangement of the air conditioners is increased, and the allowable range when selecting the air conditioners and the selection range of the number of air conditioners to be used are also widened.

  In addition, it becomes possible to supply conditioned air from a plurality of air conditioners to one suction space, compared to a case where the suction space and the air conditioner are arranged in a one-to-one correspondence, electronic equipment. It becomes easy to improve the cooling performance.

  In addition, even if a part of the plurality of air conditioners is stopped, it is possible to continue blowing the conditioned air to the suction space, so the suction space and the air conditioner are arranged in a one-to-one correspondence. Compared with the case where it is, it becomes easy to aim at the reliability improvement of cooling. The stop of the air conditioner can include a stop for maintenance management in addition to a stop due to a failure.

  In the above-mentioned invention, the chamber part in which a plurality of internal spaces are provided is provided, the air conditioner that allows the conditioned air to flow in is disposed, and the pressure in the internal space of the chamber part is the air conditioner that flows from the air conditioner It is preferable that the air flow rate is controlled to be adjusted to a desired state.

  In this way, by providing a plurality of independent chamber portions and controlling the flow rate of the conditioned air supplied to the interior space of the chamber portion so that it can be adjusted to a desired pressure, it is more suitable for electronic devices. It is easy to reduce power consumption while performing proper cooling. That is, the static pressure in the internal space of the chamber part can be raised as one of a plurality of parameters for controlling the air volume and the air speed of the conditioned air blown out from the blowing part of the chamber part toward the suction space. By adopting the above-described configuration, it becomes easy to set different static pressures in the plurality of internal spaces in the chamber portion. As a result, it becomes easier to control the air volume and speed of the conditioned air blown out from the blow-out part of the chamber part toward the suction space, and the conditioned air necessary to cool the electronic equipment is blown out toward the suction space. It becomes easier to control.

  In the above invention, it is more preferable that the plurality of internal spaces are arranged in a horizontal direction. Since the plurality of internal spaces are arranged in the horizontal direction in this way, it is possible to adjust the air volume and the wind speed of the conditioned air blown from the blow-out unit in the horizontal direction. That is, since the static pressure can be adjusted independently in each of the plurality of internal spaces arranged in the horizontal direction, it is easy to adjust the air volume and the wind speed of the conditioned air blown out in the horizontal direction. Therefore, for example, it is possible to adjust the air volume and the air speed of the conditioned air blown into each of the plurality of suction spaces.

  In the above invention, it is more preferable that the plurality of internal spaces are arranged in the vertical direction. By arranging the plurality of internal spaces in the vertical direction as described above, it is possible to adjust the air volume and the wind speed of the conditioned air blown from the blow-out portion in the vertical direction. That is, since the static pressure can be adjusted independently in each of the plurality of internal spaces arranged in the vertical direction, it is easy to adjust the air volume and the wind speed of the conditioned air blown out in the vertical direction. Therefore, for example, it is possible to adjust the air volume and the air speed of the conditioned air blown upward and downward with respect to the suction space.

In the above invention, it is preferable that the chamber portion extends to a position adjacent to the device room and adjacent to a position facing the suction space.
Thus, the chamber portion is aligned at a position adjacent to the equipment room and extends to a position adjacent to the position facing the suction space, for example, the suction space is adjacent to the equipment chamber from a position facing the suction space. By setting it as the shape extended in the extending direction, the range in which the air conditioner can be arranged can be further expanded. As a result, the degree of freedom of arrangement of the air conditioners can be further increased, and the number of air conditioners that can be arranged can be increased.

  In the above-mentioned invention, a change unit that changes at least one of the blowing flow rate, flow velocity, and blowing direction of the conditioned air blown out from the blowing unit, a temperature measuring unit that measures a temperature distribution in the device room, It is preferable that a control unit for controlling the changing unit is further provided based on the temperature distribution measured by the temperature measuring unit.

  Thus, based on the temperature distribution in the equipment room, it is possible to change at least one of the flow rate, flow velocity, and blowing direction of the conditioned air blown out from the blow-out unit, thereby more appropriately cooling the electronic device. This makes it easy to reduce power consumption.

  According to the air conditioning system of the present invention, it is possible to determine the arrangement position of the air conditioner without being constrained by the arrangement of the racks by providing the chamber portion between the equipment room where the plurality of racks are arranged and the air conditioner. Therefore, it is possible to increase the degree of freedom of arrangement of the air-conditioning equipment and to further improve the cooling performance of the ICT device.

It is a model diagram explaining the air conditioning system which concerns on the 1st Embodiment of this invention. FIG. 2 is a cross-sectional view taken along the line A-A ′ illustrating the configuration of the air conditioning system in FIG. 1. It is the elements on larger scale explaining the positional relationship of an air conditioner, a chamber part, and a rack rack. It is the elements on larger scale explaining arrangement | positioning of an upper side blowing part and a server side blowing part. It is a schematic diagram explaining another Example of a chamber part. It is a schematic diagram explaining another Example of a chamber part. It is a block diagram explaining the structure of the control part in the air conditioning system which concerns on the 2nd Embodiment of this invention. It is a flowchart explaining the content in a control part.

An air conditioning system 1 according to a first embodiment of the present invention will be described with reference to FIGS. 1 to 6. In the present embodiment, the present invention is an air conditioning system 1 that controls the room temperature in the server room (equipment room) 50 of the data center to a temperature suitable for the operation of the ICT equipment (electronic equipment) 61 arranged in the server room 50. A description will be given by applying to an example. As shown in FIGS. 1 and 2, the air conditioning system 1 of the present embodiment is mainly provided with an air conditioning unit 10, a chamber unit 20, and a return air unit 30. The server room 50 in which the ICT device 61 to be cooled is accommodated will be described. The server room 50 is a space in which the ICT device 61 and the like are housed, and a front room 51 serving as a path for entering and exiting the server room 50, the chamber unit 20, and the like are disposed around the server room 50. In the server room 50, power is distributed to various server devices such as business servers, data servers, and Web servers that are ICT devices 61, communication devices such as routers and switching hubs, various server devices and communication devices, and the like. A plurality of racks 71 that house power outlets 62 (hereinafter also referred to as “PDU62”) and the like are arranged.

  The rack 71 accommodates the ICT devices 61 such as the above-described server devices in a replaceable manner. For example, the rack 71 accommodates a plurality of ICT devices 61 side by side in the vertical direction. As a specific configuration of the rack 71, a known configuration can be used, and the configuration is not particularly limited.

  The ICT device 61 accommodated in the rack 71 has a configuration in which heat generated by operation is cooled by air taken from the server room 50, that is, conditioned air supplied from the air conditioning system 1. The conditioned air is taken into the ICT device 61 from one end and absorbs the generated heat. The air that has absorbed heat becomes discharged air whose temperature has risen, and is discharged from the other end of the ICT device 61. The ICT device 61 is arranged in the rack 71 so that the surface for taking in the conditioned air and the surface from which the exhaust air is discharged are aligned.

  The plurality of racks 71 are arranged side by side so as to form a rack rack 72 extending in one direction. Furthermore, the two rack racks 72 are arranged in the server room 50 so as to form a pair. In one rack frame 72, the racks 71 are arranged so that the surfaces for taking in the conditioned air and the surfaces from which the discharged air are discharged in each rack 71 are aligned. Further, the set of rack racks 72 arranged in parallel is arranged so that the surface from which the above-described exhaust air is discharged faces the hot aisle HA which is a space sandwiched between the rack racks 72 constituting the set. Furthermore, the cold aisle (intake space) CA, which is the space outside the rack rack 72 constituting the set, is arranged so that the surface into which the above-described conditioned air is introduced faces.

Next, the air conditioning unit 10, the chamber unit 20, and the return air unit 30 constituting the air conditioning system 1 will be described.
The air-conditioning unit 10 sucks exhaust air that has absorbed heat generated by the ICT device 61 described above, and supplies the air-conditioning air cooled to a desired temperature to the server room 50. The air conditioning unit 10 is mainly provided with a heat source unit 11, an air conditioner 13, and an air conditioner room 16.

  The heat source unit 11 generates cold heat used for cooling the exhaust air. Between the heat source part 11 and the air conditioner 13, the structure which the refrigerant | coolant which conveys heat circulates is provided. The generated cold heat is conveyed to the air conditioner 13 by the refrigerant. The refrigerant that has absorbed the heat of the exhaust air in the air conditioner 13 is transported to the heat source unit 11. In the present embodiment, the heat source unit 11 is a chiller that generates cold water and the configuration in which the refrigerant circulates is applied to a central heat source method in which the cold water circulation unit 12 is used. For example, a publicly known system or configuration such as a vapor compression air conditioner can be used, and there is no particular limitation.

  The air conditioner 13 performs heat exchange between the discharged air and the refrigerant, and supplies conditioned air, which is air cooled to a desired temperature by heat exchange, to the ICT device 61 of the server room 50. . The air conditioner 13 includes at least a heat exchanger 14 that performs heat exchange between the exhaust air and the refrigerant, and a blower fan 15 that sends out the conditioned air toward the server room 50.

  The number of arranged air conditioners 13 can be determined based on, for example, the total rated capacity of the arranged air conditioners 13 and the total maximum amount of heat generated by the ICT device 61 accommodated in the server room 50. The arrangement position of the air conditioner 13 is based on the arrangement relationship between the air conditioner room 16 and the chamber unit 20 described later, the presence / absence of a space in which the air conditioner 13 can be arranged, the presence / absence of a space necessary for maintenance work of the air conditioner 13, and the like. Can be determined.

  The air conditioner room 16 is a space for accommodating the air conditioner 13, and is a space adjacent to the chamber part 20 and the return air part 30 and capable of air flow. The air conditioner room 16 is a position where the chamber part 20 is sandwiched between the server room 50 and a position facing the end of the rack rack 72, in other words, a position where the cold aisle CA can be desired from the end. It is a space provided in In the present embodiment, the present invention is applied to an example in which the air conditioner chamber 16 is provided at a position facing one end of the rack rack 72, specifically, the end on the side where the front chamber 51 is provided. explain.

  Above the end of the air conditioner room 16 on the server room 50 side, air is connected to the return air part 30 so that air can flow therethrough, and the air conditioner 13 is disposed at the end adjacent to the chamber part 20. Air can flow through the air conditioner 13 between the air conditioner room 16 and the chamber unit 20.

  The chamber portion 20 is a space between the server room 50 and the air conditioner room 16 that is sandwiched between the rack racks 72 and faces the cold aisle CA that sucks in air that the ICT device 61 uses for cooling. It is the space arranged in. Furthermore, the chamber part 20 is a space into which the conditioned air blown out from the air conditioner 13 flows, and the internal static pressure is made higher than the server room 50 by the conditioned air that has flowed in.

  As shown in FIGS. 3 and 4, the chamber section 20 has an upper blowing section 21 and a server-side blowing that blows conditioned air in the direction in which the cold aisle CA extends, in other words, in the direction in which the rack rack 72 extends. A portion 22 is provided. The upper side blowing part 21 and the server side blowing part 22 are side walls that form a partition from the server room 50 in the chamber part 20 and are provided at positions facing the end of the cold aisle CA.

  The upper air outlet 21 is an air outlet provided at a position above the server air outlet 22 and above the upper end of the rack rack 72. In the present embodiment, the three upper outlets 21 are arranged side by side on the upper side of the rack rack 72 and the upper end side of the cold aisle CA, and the three upper outlets 21 are arranged again at a position corresponding to the hot aisle HA. The description will be made by applying to the example arranged in (1).

  The server-side blowing part 22 is a blowing hole provided below the upper blowing part 21 and at a position between the upper end of the rack rack 72 and the floor surface. In the present embodiment, description will be made by applying to an example in which two server-side outlets 22 are arranged in the vertical direction at a position between the upper end of the rack rack 72 and the floor surface.

  As shown in FIGS. 2 and 4, the return air unit 30 is a space provided above the server room 50 and is a flow path that guides exhaust air exhausted to the hot aisle HA to the air conditioner room 16. The end of the return air section 30 on the side of the air conditioner room 16 passes through the upper side of the chamber section 20 and is connected to the upper end of the air conditioner room 16 so that the exhaust air can flow. The other end is closed so that exhaust air does not flow into the server room 50.

  The return air part 30 is provided with an opening 31 through which the exhaust air of the hot aisle HA flows into the return air part 30. The opening 31 is a bottom surface serving as a partition with the server room 50 in the return air section 30 and is a through hole provided in a region facing the hot aisle HA. The openings 31 are provided above the hot aisle HA and are discretely arranged in the direction in which the hot aisle HA extends. The arrangement interval of the openings 31 is reduced as the distance from the air conditioner room 16 is increased, and the opening area of the openings 31 is increased as the distance from the air conditioner room 16 is increased.

  Further, as shown in FIGS. 2 and 4, the hot aisle HA and the cold aisle CA are partitioned between the return air unit 30 and the hot aisle HA, and the exhaust air of the hot aisle HA is supplied to the return air unit 30. A leading hot aisle capping 32 is provided. The hot aisle capping 32 includes a side surface portion that extends from the upper end of the rack rack 72 toward the return air portion 30, and an end portion that closes one end portion and the other end portion of the hot aisle HA on the air conditioner chamber 16 side. It is composed of A side surface portion of the hot aisle capping 32 is provided at a position close to the hot aisle HA side in the upper end of the rack rack 72.

Next, cooling of the ICT device 61 in the air conditioning system 1 having the above configuration will be described.
As shown in FIGS. 3 and 4, the ICT device 61 takes in the conditioned air from the surface on the cold aisle CA side and cools it by absorbing the heat generated by the operation into the conditioned air. The conditioned air whose temperature has increased by absorbing heat is discharged from the surface on the hot aisle HA side as discharged air.

  Exhaust air discharged from the ICT device 61 moves upward from the hot aisle HA and flows into the return air portion 30 from the opening 31. As shown in FIG. 2, the exhaust air that has flowed into the return air section 30 flows toward the air conditioner room 16 and flows into the air conditioner room 16. Thereafter, the discharged air is drawn into the air conditioner 13 and is cooled by exchanging heat with the refrigerant in the heat exchanger 14.

  The heat exchanger 14 of the air conditioner 13 is configured so that a refrigerant that supplies cold heat from the heat source unit 11 circulates, and is cooled by the heat of the exhaust air being absorbed by the refrigerant. The cooled exhaust air becomes conditioned air and is blown out to the chamber unit 20 by the blower fan 15.

  The chamber unit 20 is supplied with conditioned air from the air conditioner 13, and therefore has a higher static pressure than the server room 50. Due to the pressure difference between the chamber unit 20 and the server room 50, the conditioned air is blown out from the upper blowing unit 21 and the server blowing unit 22 to the server room 50.

  As shown in FIG. 3 and FIG. 4, the conditioned air blown out from the upper blowing portion 21 extends in the direction in which the cold aisle CA (or rack rack 72) extends in the space above the cold aisle CA and above the rack rack 72. Flowing along. In addition, the conditioned air blown out from the server-side outlet 22 flows through the space between the rack racks 72 along the direction in which the cold aisle CA (or the rack rack 72) extends. The conditioned air supplied to the server room 50 from the upper blowing unit 21 and the server blowing unit 22 is again taken into the ICT device 61 and used for cooling.

  According to the air conditioning system 1 configured as described above, the chamber unit 20 is provided between the server room 50 in which the plurality of rack racks 72 are arranged and the air conditioner room 16, thereby being restrained by the arrangement of the rack racks 72. Therefore, the arrangement position of the air conditioner 13 can be determined. In other words, the conditioned air is supplied from the air conditioner 13 to the chamber unit 20 and is blown out from the upper side blowing unit 21 and the server side blowing unit 22 of the chamber unit 20 toward the cold aisle CA. Even if the position of the air conditioner 13 does not match, the conditioned air can be supplied to the cold aisle CA. Therefore, the degree of freedom of arrangement of the air conditioners 13 is increased, and the allowable range of the size when selecting the air conditioners 13 and the selection range of the number of air conditioners 13 to be used are also widened.

  Furthermore, it becomes possible to supply conditioned air from a plurality of air conditioners 13 to one cold aisle CA, compared with a case where the cold aisle CA and the air conditioners 13 are arranged in a one-to-one correspondence. Thus, it becomes easy to improve the cooling performance of the ICT device 61.

  In addition, even if some of the plurality of air conditioners 13 are stopped, it is possible to continue blowing the conditioned air to the cold aisle CA, so the cold aisle CA and the air conditioner 13 correspond one-to-one. Therefore, it becomes easier to improve the reliability of cooling compared to the case where they are arranged. The stop of the air conditioner 13 can include a stop for maintenance management in addition to a stop due to a failure.

  Moreover, in the air conditioning system 1 of this embodiment, compared with the case where the conditioned air is blown out to the server room 50 through the underfloor space, the blowing power can be reduced. That is, in the case where the conditioned air is blown out to the server room 50 through the underfloor space, the pressure loss generated at the opening between the air conditioner 13 and the underfloor space is larger and more than in the air conditioning system 1 of the present embodiment. The blowing power to send out the conditioned air was required.

  Furthermore, in the air conditioning system 1 of this embodiment, compared with the case where conditioned air is blown out to the server room 50 through the underfloor space, the supply of conditioned air can be facilitated. That is, the floor opening located in the vicinity of the opening has a larger dynamic pressure (wind speed) under the floor, and therefore, compared to the air conditioning system 1 of the present embodiment, it is difficult to supply conditioned air to the server room 50. There is a possibility that the conditioned air supplied to the server room 50 flows backward under the floor.

  In the above-described embodiment, the description is applied to an example in which the chamber portion 20 having a continuous internal space is provided except for a portion delimited by the front chamber 51. However, as illustrated in FIG. May be provided to provide a chamber portion 20A having a plurality of internal spaces in the horizontal direction. FIG. 5 shows an example in which two internal spaces are provided in the chamber section 20, but the number of internal spaces is not limited to two, and a larger number of internal spaces are provided. It may be.

  The plurality of internal spaces of the chamber portion 20A are independent from each other, and the flow of conditioned air is blocked between adjacent internal spaces. In the internal space of the chamber portion 20A, an air conditioner 13, an upper blowing portion 21, a server-side blowing portion 22, and the like are provided.

  By providing the chamber portion 20A having a plurality of internal spaces as described above and controlling the flow rate of the conditioned air supplied to the chamber portion 20A so as to be adjusted to a desired pressure (for example, a desired static pressure), The power consumption can be easily reduced while performing more appropriate cooling for the ICT device 61. That is, the static pressure in the chamber part 20A is one of a plurality of parameters for controlling the air volume and the air speed of the conditioned air blown from the upper outlet part 21 and the server side outlet part 22 of the chamber part 20A toward the cold aisle CA. Can be raised.

  By adopting the above-described configuration, it becomes easy to set different static pressures in the internal space in the chamber portion 20A. As a result, it becomes easy to control the air volume and the air speed of the air-conditioning air blown from the upper blow-out portion 21 and the server-side blow-out portion 22 of the chamber portion 20A toward the cold aisle CA, and is necessary for cooling the ICT device 61. It becomes easy to control so that the conditioned air is blown out toward the cold aisle CA.

  Furthermore, since the internal space of the chamber part 20A is arranged in the horizontal direction, it is possible to adjust the air volume and the air speed of the conditioned air blown from the upper blowing part 21 and the server-side blowing part 22 in the horizontal direction. Become. That is, since the static pressure can be adjusted independently in each of the internal spaces of the chamber portion 20A arranged in the horizontal direction, it is easy to adjust the air volume and the air speed of the conditioned air blown out in the horizontal direction. Therefore, for example, it is possible to adjust the air volume and the air speed of the conditioned air blown into each of the plurality of cold aisles CA.

  In addition, as a method of controlling the flow rate of the conditioned air supplied to the chamber unit 20A, control for increasing or decreasing the number of operating air conditioners 13 may be used, or control for increasing or decreasing the rotation speed of the blower fan 15 of the air conditioner 13. There is no particular limitation.

  Further, as in the configuration described above, the internal space of the chamber portion 20A may be arranged in the vertical direction instead of being arranged in the horizontal direction. In this case, an upper blowing portion 21 is provided in the inner space of the chamber portion 20A disposed on the upper side (hereinafter also referred to as “upper inner space”), and the inner space of the chamber portion 20A disposed on the lower side. (Hereinafter also referred to as “lower internal space”) is provided with a server-side outlet 22. Of the server-side outlets 22 arranged in two upper and lower stages, the upper one may be provided in the upper internal space, and the lower server-side outlet 22 may be provided in the lower internal space.

  The air conditioner 13 is arranged so as to supply conditioned air to either the upper internal space or the lower internal space. For example, the ratio of the number of air conditioners 13 arranged in the upper internal space to the number of air conditioners 13 arranged in the lower internal space can be 2: 1. In addition, the ratio of the number of the above-described air conditioners 13 is an exemplification, and may be a value of another ratio, and is not particularly limited to the value of this ratio.

  Thus, by arranging the internal space of the chamber portion 20A in the vertical direction, it is possible to adjust the air volume and the wind speed of the conditioned air blown out from the upper blowing portion 21 and the server-side blowing portion 22 in the vertical direction. It becomes. That is, since the static pressure can be adjusted independently in each of the upper internal space and the lower internal space, the blow-out portion provided in the upper internal space and the blow-off provided in the lower internal space It can adjust so that the air volume and the wind speed of the air-conditioning air which are blown out may differ with respect to a part. Therefore, for example, it is possible to adjust the air volume and the air speed of the conditioned air blown upward and downward with respect to the cold aisle CA.

  Moreover, in the above-mentioned embodiment, the chamber part 20 is a position adjacent to the server room 50 and is disposed only at a position facing the end of the cold aisle CA (end on the front chamber 51 side). Although applied and demonstrated, as shown in FIG. 6, from the position where the chamber part 20B opposes the edge part (end part by the side of the front chamber 51) of cold aisle CA, the other adjacent position (cold aisle CA extends). (Position parallel to the direction) may be provided extending in an L shape.

  In this case, the air conditioner 13 can be provided in an arbitrary place in the chamber portion 20B formed in an L shape. On the other hand, like the chamber part 20, the upper side blowing part 21 and the server side blowing part 22 are provided only on the side surface facing the end of the cold aisle CA in the chamber part 20B.

  As described above, the shape of the chamber portion 20B extends from the position facing the cold aisle CA in the direction in which the server room 50 extends while adjoining the server room 50, thereby further expanding the range in which the air conditioner 13 can be arranged. Can do. As a result, the degree of freedom of arrangement of the air conditioners 13 can be further increased, and the number of air conditioners 13 that can be arranged can be increased.

[Second Embodiment]
Next, a second embodiment of the present invention will be described with reference to FIGS. The basic configuration of the air conditioning system of the present embodiment is the same as that of the first embodiment, but with the first embodiment, the air volume of the conditioned air blown from the upper blowing unit and the server blowing unit is controlled. Is different. Therefore, in the present embodiment, the control of the blown air volume of the conditioned air will be mainly described with reference to FIGS. 7 and 8, and the description of the same configuration and the like as in the first embodiment will be omitted.

  The air conditioning system 1 of the present embodiment has the configuration of the air conditioning system 1 of the first embodiment, and further, as shown in FIG. 7, a temperature sensor (temperature measurement unit) 81 that measures temperature, and conditioned air The change part 85 which changes at least the air volume (flow rate) of this, and the control part 90 which controls the change part 85 are provided at least.

  The temperature sensor 81 is a sensor that measures temperatures distributed in the server room 50, and the measured temperature information in the server room 50 is output to the control unit 90. Examples of the location where the temperature sensor 81 is disposed include the cold aisle CA, the hot aisle HA in the server room 50, and the vicinity of the ICT device 61 accommodated in the rack rack 72.

  The arrangement of the temperature sensor 81 may be any arrangement as long as the temperature distribution in the server room 50 can be grasped, and the detailed arrangement position is not limited. Further, the configuration of the temperature sensor 81 and the method for measuring the temperature are not particularly limited.

  The changing unit 85 controls the air volume of the conditioned air to be blown by driving a member that controls the air volume such as a louver in the upper blowing unit 21 and the server blowing unit 22. Examples of the control unit 90 include those that drive a member that controls the air volume using a drive unit such as an electric motor or an actuator based on a control signal input from the control unit 90 described later. There are no particular restrictions on the structure or drive type.

  The control unit 90 controls the air volume of the conditioned air that is blown out based on the temperature information acquired from the temperature sensor 81. The control unit 90 is a computer system having a CPU (Central Processing Unit), ROM, RAM, input / output interface, and the like. The control program stored in the ROM or the like causes the CPU to function as at least the arithmetic unit 91, causes the ROM or the like to function as the storage unit 92, and causes the input / output interface or the like to function as at least the input / output unit 93. Is.

  The calculation unit 91 performs a calculation for controlling the air volume of the conditioned air based on the temperature information input from the temperature sensor 81 and generates a control signal for driving the changing unit 85 based on the calculation result. Details of the control in the calculation unit 91 will be described later.

  The storage unit 92 stores in advance a first threshold value that is used in the calculation of the air volume control of the conditioned air, and a second threshold value that is smaller than the first threshold value. Further, the storage unit 92 includes a temperature sensor 81 distributed in the server room 50, an upper blowing unit 21 having a large influence of temperature change on the arrangement position of the temperature sensor 81, and a server blowing unit 22. A map representing the correspondence relationship is stored in advance.

  The input / output unit 93 receives temperature information measured by the temperature sensor 81 and outputs the input temperature information to the calculation unit 91. Further, the input / output unit 93 receives the control signal generated by the calculation unit 91 and outputs the input control signal to the changing unit 85.

Next, air volume control of the conditioned air in the air conditioning system 1 having the above configuration will be described with reference to FIG.
When the blowing of conditioned air from the air conditioner 13 to the server room 50 is started, the control unit 90 starts control processing according to the flowchart shown in FIG. First, the calculation part 91 of the control part 90 performs the process which acquires the temperature information measured by the several temperature sensor 81 via the input / output part 93 (temperature acquisition step: S11).

  Furthermore, the calculating part 91 performs the process which acquires the 1st threshold value regarding the upper limit environmental temperature in the ICT apparatus 61 accommodated in the server room 50 from the memory | storage part 92 (1st threshold value acquisition step: S12). Next, the calculation unit 91 compares the acquired temperature information with the first threshold value, and performs a process of determining the presence or absence of the temperature sensor 81 that measures the temperature equal to or higher than the first threshold value (upper limit determination step: S13).

  When it is determined that there is a temperature sensor 81 that measures a temperature equal to or higher than the first threshold value (in the case of YES), the calculation unit 91 is capable of lowering the ambient temperature of the temperature sensor 81 or The server side blowing unit 22 is specified (blowing unit specifying step: S14). Specifically, based on the map stored in the storage unit 92, processing for specifying the upper blowing unit 21 and the server blowing unit 22 is performed.

  Thereafter, the calculation unit 91 performs a control process for increasing the air volume of the conditioned air to be blown by 1 step with respect to the identified upper blowing unit 21 and server side blowing unit 22 (air volume increasing step: S15), and returns to the above-described S11. The above control is repeated.

  In the determination of S13, when it is determined that there is no temperature sensor 81 that has measured the temperature equal to or higher than the first threshold value (in the case of NO), the calculation unit 91 is determined from the storage unit 92 from the viewpoint of reducing power consumption. The second threshold value regarding the lower limit environmental temperature is acquired (second threshold value acquisition step: S16). Next, the calculation unit 91 compares the acquired temperature information with the second threshold value, and performs a process of determining the presence or absence of the temperature sensor 81 that measures the temperature equal to or lower than the second threshold value (lower limit determination step: S17).

  When it is determined that there is a temperature sensor 81 that measures a temperature equal to or lower than the second threshold value (in the case of YES), the calculation unit 91 can increase the ambient temperature of the temperature sensor 81, The server side blowing unit 22 is specified (blowing unit specifying step: S18). Specifically, based on the map stored in the storage unit 92, processing for specifying the upper blowing unit 21 and the server blowing unit 22 is performed.

  Thereafter, the calculation unit 91 performs a control process for reducing the air volume of the conditioned air to be blown to the identified upper blowing unit 21 and server-side blowing unit 22 by one step (air volume reducing step: S19), and returns to the above-described S11. The above control is repeated. Also, in the determination process of S17, when it is determined that there is no temperature sensor 81 that measures the temperature equal to or lower than the second threshold (in the case of NO), the process returns to S11 and the above-described control is performed.

  According to said structure, based on the temperature distribution in the server room 50, by making it possible to change the air volume of the air-conditioning air which blows off from the upper side blowing part 21 or the server side blowing part 22, with respect to the ICT apparatus 61 It is easy to reduce power consumption while performing more appropriate cooling.

  In the above-described embodiment, the description is applied to an example in which the air volume (flow rate) of the conditioned air is controlled. However, the present invention is not limited to the air volume, and for example, the air speed or the blowing direction may be controlled. These combinations may be used and are not particularly limited.

  The technical scope of the present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention. For example, in the above-described embodiment, the description has been made by applying to an example of an air conditioning system targeted at a server room in a data center. However, the present invention is not limited to an air conditioning system targeted at this server room. It can apply to the air-conditioning system which cools the space in which the apparatus which generate | occur | produces heat | fever by accommodating is accommodated.

  DESCRIPTION OF SYMBOLS 1 ... Air conditioning system, 13 ... Air conditioner, 21 ... Upper side blowing part, 22 ... Server side blowing part, 50 ... Server room (equipment room) 20, 20A, 20B ... Chamber part, 30 ... Return air part, 61 ... ICT Equipment (electronic equipment) 71 ... rack 81 ... temperature sensor (temperature measuring part) 85 ... change part 90 ... control part CA ... cold aisle (suction space)

Claims (5)

An air conditioner that sucks and cools exhaust air discharged from electronic devices housed in a plurality of racks arranged side by side, and supplies the cooled air-conditioned air to the electronic devices;
Of the space between the equipment room in which the plurality of racks are arranged and the air conditioner arranged outside the equipment room, at least a space sandwiched between the plurality of racks, and the electronic device is used for cooling. A chamber portion that is disposed at a position opposite to a suction space for sucking in air to be used, the air-conditioned air flows from the air conditioner , and a plurality of internal spaces are independent from each other ;
Is provided,
The chamber portion has a blow-out portion that blows the conditioned air toward a direction in which the suction space extends, at a position facing the suction space on a side wall that forms a partition with the device room,
The air conditioner that allows the conditioned air to flow into each of the internal spaces of the chamber portion is disposed, and the pressure in the internal space of the chamber portion is controlled by controlling the flow rate of the conditioned air that flows from the air conditioner. The air conditioning system is characterized in that it is adjustable . Air conditioning system of claim 1, wherein the plurality of the internal space, characterized in that it is arranged horizontally. Air conditioning system of claim 1, wherein the plurality of the internal space, characterized in that it is arranged vertically. The air conditioning according to any one of claims 1 to 3 , wherein the chamber portion extends to a position adjacent to the device room and adjacent to a position facing the suction space. system. A changing unit for changing at least one of the blowout flow rate, flow velocity, and blowing direction of the conditioned air blown out from the blowing unit;
A temperature measuring unit for measuring a temperature distribution in the equipment room;
Based on the temperature distribution measured by the temperature measurement unit, a control unit for controlling the change unit,
Is further provided, The air conditioning system of any one of Claim 1 to 4 characterized by the above-mentioned.