JP5680175B2 - Local circulation air conditioning system in data center - Google Patents

Local circulation air conditioning system in data center Download PDF

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JP5680175B2
JP5680175B2 JP2013260321A JP2013260321A JP5680175B2 JP 5680175 B2 JP5680175 B2 JP 5680175B2 JP 2013260321 A JP2013260321 A JP 2013260321A JP 2013260321 A JP2013260321 A JP 2013260321A JP 5680175 B2 JP5680175 B2 JP 5680175B2
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air
cooling
data center
conditioning system
rack
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JP2014112028A (en
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原　正樹
正樹 原
孝誠 市川
孝誠 市川
誠志 茂呂
誠志 茂呂
葛岡　典雄
典雄 葛岡
忠敬 才野
忠敬 才野
佐々木　義高
義高 佐々木
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Kajima Corp
Sinko Industries Ltd
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Sinko Industries Ltd
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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/20709—Modifications to facilitate cooling, ventilating, or heating for server racks or cabinets; for data centers, e.g. 19-inch computer racks
    • H05K7/20718—Forced ventilation of a gaseous coolant
    • H05K7/20745—Forced ventilation of a gaseous coolant within rooms for removing heat from cabinets, e.g. by air conditioning device

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  • Thermal Sciences (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Ventilation (AREA)
  • Air Conditioning Control Device (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)
  • Central Air Conditioning (AREA)

Description

本発明は、データセンターのコンピュータ室のようなサーバやルータなどのＩＣＴ（Information and Communication Technology）装置のような発熱体を有する電子装置である高発熱装置が設置された施設において、冷房空気を循環させるデータセンターにおける局部循環空調システムに関する。   The present invention circulates cooling air in a facility in which a high heat generating device which is an electronic device having a heating element such as an ICT (Information and Communication Technology) device such as a server or router such as a computer room in a data center is installed. The present invention relates to a local circulation air conditioning system in a data center.

従来のデータセンターでは、特許文献１に開示されているように、空気調和機からの冷気を床下からサーバ等のラックに送風し、ラックからの排気を天井を介して空気調和機に還気している。近時、ＣＰＵの処理能力の向上、ブレードサーバの普及等に伴い、これらサーバやルータなどのＩＣＴ装置のような発熱体を有する電子装置等の高発熱を伴う装置も急激に高性能・大容量化し、コンピュータシステムが必要とする冷却空気量が急激に増加しており、より大容量の冷気の送風が求められている。
この従来のデータセンターでの冷房空調システムを、図１に示して説明する。
データセンターaに隣接して、冷熱源として、フィルターｂ冷却コイルｃと送風ファンｄからなる冷水型空調機や直膨型室内機等の冷房空調装置ｅを配置し、年間を通じて冷房を行うものであるが、図１において、冷房空調装置ｅからの冷気Cをグリル床ｆからサーバg2等のラックｇの前面パネルg1に送風し、サーバg2の発熱を処理したラックｇで暖まった暖気Ｈは、サーバ内蔵ファンg3によってラックｇの背面パネルg4から排気され、この暖機Ｈは天井吸込口ｈから通風路ｉを介して冷房空気調和機eに還気する循環冷却システムである。 In the conventional data center, as disclosed in Patent Document 1, the cool air from the air conditioner is blown from below the floor to a rack such as a server, and the exhaust from the rack is returned to the air conditioner through the ceiling. ing. Recently, along with the improvement of CPU processing capacity and the spread of blade servers, devices with high heat generation such as electronic devices having heating elements such as ICT devices such as servers and routers have also rapidly improved in performance and capacity. As a result, the amount of cooling air required by the computer system is rapidly increasing, and there is a demand for blowing a larger volume of cool air.
A conventional air conditioning system in a data center will be described with reference to FIG.
A cooling air conditioner e such as a chilled water type air conditioner or a direct expansion type indoor unit composed of a filter b cooling coil c and a blower fan d is arranged as a cooling heat source adjacent to the data center a, and performs cooling throughout the year. In FIG. 1, the cool air C from the cooling air conditioner e is blown from the grill floor f to the front panel g1 of the rack g such as the server g2, and the warm air H heated by the rack g that has processed the heat generated by the server g2 is The server built-in fan g3 exhausts the rear panel g4 of the rack g, and this warm-up H is a circulating cooling system that returns air from the ceiling suction port h to the cooling air conditioner e through the ventilation path i.

特開２００７−２３２３１２公報JP 2007-232312 A

ところで、上述した従来のデータセンターにおける循環冷却システムにおいて、サーバ等は年間を通して非常に大きな発熱があり、サーバ等の熱負荷を処理するため、莫大なエネルギーが消費されるため、冷却するための空調エネルギーの削減が求められていた。
また、データセンター(電算室等)のＩＣＴ(Information and Communication Technology)装置等の発熱体を有する電子装置の熱負荷は年々増加傾向にあり、高発熱化に対処するために空調機器設置のスペースが不足するという問題点があった。
さらに、サーバの稼働状態によっては、サーバ室内の負荷にばらつきが生じ、温度ムラやエネルギー消費の無駄が生じてしまうという問題点があった。
本発明は、このような従来の問題点に鑑みてなされたもので、データセンターの空調システムにおいて、空調エネルギーを削減し、空調施設のスペースを増加せず、かつ、サーバーラックスペースおよび、サーバーラックの数を減ずることなく、温度ムラやエネルギー消費の無駄を省く空調システムを提供するものである。 By the way, in the above-described circulation cooling system in the data center, the server and the like generate a great amount of heat throughout the year, and a large amount of energy is consumed to process the heat load of the server and the like. There was a need to reduce energy.
In addition, the heat load of electronic devices with heating elements such as ICT (Information and Communication Technology) equipment in data centers (computer rooms, etc.) is increasing year by year, and there is a space for installing air conditioning equipment to cope with high heat generation. There was a problem of shortage.
Further, depending on the operating state of the server, there is a problem that the load in the server room varies, resulting in temperature unevenness and waste of energy consumption.
The present invention has been made in view of such conventional problems. In an air conditioning system of a data center, the air conditioning energy is reduced, the space of the air conditioning facility is not increased, and the server rack space and the server rack are provided. It is an object of the present invention to provide an air conditioning system that eliminates temperature unevenness and waste of energy consumption without reducing the number of air conditioners.

上記課題を解決するために、請求項１の発明は、発熱体を有する電子装置を収納した複数のラック列が並列に配置され、対向するラック列間の空間が冷却空間領域と排熱空間領域とに交互に配置され、床下空間が連結された施設において、前記冷却空間領域のラック列間のグリル床の下面には冷房空調施設が設けられ、該グリル床の直下はフィルター作用を有する金網で覆い、該金網の下方には送風ファン及び冷却コイルが設けられ、その下方は床下空間の排熱空間領域からの暖気を吸い込む吸込開口が形成され、冷気を前記グリル床から上方の前記冷却空間領域に送風し、該冷却空間領域の冷気で電子装置の熱負荷を処理して隣接する前記排熱空間領域に排気し、該排熱空間領域の暖気を前記グリル床から吸気して前記冷却コイルに循環させるようにしたことを特徴とするデータセンターにおける局部循環空調システムである。
請求項２の発明は、データセンターにおける局部循環空調システムにおいて、前記冷却空間領域と排熱空間領域とのいずれか一方の各ラック列の上部が天井で実質的に密封されることを特徴とする。
請求項３の発明は、請求項１又は２に記載のデータセンターにおける局部循環空調システムにおいて、前記送風ファンの送風量は、隣接するラック列内の負荷を検知し、他の送風ファンとは独立して制御するようにしたことを特徴とする。
請求項４の発明は、請求項１又は２又は３に記載のデータセンターにおける局部循環空調システムにおいて、前記金網は網目が２００乃至１０メッシュのフィルターとしたことを特徴とする。 In order to solve the above-mentioned problem, the invention of claim 1 is characterized in that a plurality of rack rows containing an electronic device having a heating element are arranged in parallel, and the space between the opposing rack rows is a cooling space region and an exhaust heat space region. And a cooling air-conditioning facility is provided on the lower surface of the grill floor between the rack rows in the cooling space region, and a wire mesh having a filter function is provided directly below the grill floor. A blower fan and a cooling coil are provided below the wire mesh, and a suction opening for sucking warm air from the exhaust heat space area of the underfloor space is formed below the wire mesh, and cool air is sent from the grill floor to the cooling space area above the grill floor. And the heat load of the electronic device is processed by the cool air in the cooling space region and exhausted to the adjacent exhaust heat space region, and the warm air in the exhaust heat space region is sucked from the grill floor to the cooling coil. Circulated A local circulating air conditioning system in the data center, characterized in that the so that.
According to a second aspect of the present invention, in the local circulation air conditioning system in a data center, an upper portion of each rack row in either the cooling space region or the exhaust heat space region is substantially sealed with a ceiling. .
According to a third aspect of the present invention, in the local circulation air conditioning system in the data center according to the first or second aspect, the blower amount of the blower fan detects a load in an adjacent rack row and is independent of other blower fans. It is characterized in that it is controlled.
According to a fourth aspect of the present invention, in the local circulation air conditioning system in the data center according to the first, second, or third aspect, the wire mesh is a filter having a mesh of 200 to 10 mesh.

本発明のデータセンターの空調システムによれば、ラック列間の空間が冷却空間領域と排熱空間領域とに交互に配置させて、隣り合うラック列間で局部的に空気を循環させるので、従来システムに比べて空調搬送動力を削減し、空調および、その送風機のエネルギーを削減することができる。また、冷却コイルや送風ファン等をグリル床の直下に収納したので、サーバ室用の空調施設のフロアーが不要となり、サーバーラックスペースおよび、サーバーラックの数を減ずる必要もなく、空調施設のスペースを別途増加する必要もない。すなわち、グリル床の直下に冷房空調施設を設置しているため、ダクト等の付属部品を用いることなく漏れなく冷却空間領域に冷気を給気できるが、その場合（特に人歩行時）床からのゴミ落下によるコイル、ファンの汚れ等が懸念されるが、グリル床の直下の給気側であるコイル、ファンより上部にフィルター作用のある金網を設置することでこうした汚れ等による効率低下、損傷を抑制することができる。また、データセンター内は所謂居住空間ではないので、従来のフィルターの代わりに金網を設けて大きな浮遊ゴミ等除去することとし、空調システムでの空気搬送抵抗を小さくしている。
また、各床下の送風ファンは、局部毎にサーバの稼働状況に応じてきめ細かくファンの風量制御ができるので、温度ムラやエネルギー消費の無駄を省くことができ、サーバ室の熱環境向上や省エネが可能となる。 According to the data center air conditioning system of the present invention, the space between the rack rows is alternately arranged in the cooling space region and the exhaust heat space region, and air is circulated locally between adjacent rack rows. Compared with the system, the air-conditioning conveyance power can be reduced, and the energy of the air-conditioning and the blower can be reduced. In addition, because the cooling coil, blower fan, etc. are housed directly under the grill floor, there is no need for an air conditioning facility floor for the server room, and there is no need to reduce the number of server rack spaces and server racks. There is no need to increase it separately. In other words, since a cooling air-conditioning facility is installed directly under the grill floor, it is possible to supply cool air to the cooling space area without using a duct or other accessory parts, but in that case (especially when walking) There are concerns about dirt on the coil and fan caused by falling dust. However, installing a coil on the air supply side directly below the grill floor and a wire mesh with a filter function above the fan will reduce efficiency and damage due to such dirt. Can be suppressed. In addition, since the data center is not a so-called living space, a wire net is provided in place of the conventional filter to remove large floating dust and the like, thereby reducing the air conveyance resistance in the air conditioning system.
In addition, the blower fans under each floor can finely control the fan air volume according to the operating status of the server for each local area, so that temperature unevenness and waste of energy consumption can be eliminated, improving the thermal environment of the server room and saving energy. It becomes possible.

従来のデータセンターにおける空調システムの説明図、An explanatory diagram of an air conditioning system in a conventional data center, 本発明のデータセンターにおける局部循環空調システムの説明図である。It is explanatory drawing of the local circulation air conditioning system in the data center of this invention.

本実施例では、データセンターにおいて、各床下に冷却コイルや送風ファン等を配置して、局部的に冷房空気を循環させることで、空調エネルギーを削減し、空調施設のスペースを増加せず、温度ムラやエネルギー消費の無駄を省く空調システムを実現した。   In this embodiment, in the data center, a cooling coil, a blower fan, etc. is arranged under each floor, and the cooling air is circulated locally, thereby reducing air conditioning energy, increasing the space of the air conditioning facility, and increasing the temperature. An air conditioning system that eliminates unevenness and waste of energy consumption has been realized.

本発明の好適なデータセンターにおける局部循環空調システムの実施例を、図面に沿って説明する。
図２のデータセンターにおける局部循環空調システムの概要に示すように、データセンター１の内部は、内蔵ファンを有するサーバ２４やルータなどのＩＣＴ（Information and Communication Technology）装置等の発熱体を有する電子装置を収納した複数のラック２列が並列に配置され、対向するラック２列間の空間が冷却空間領域Ｃ１と排熱空間領域Ｈ１とに交互に配置されており、ラック２列間の床には貫通した長孔を有するグリル床３が敷き詰められ、グリル床３の床下空間４は互いに連結されていてチャンバー（空気通路）を形成している。
また、排熱空間領域Ｈ１の天井５'は、吊り天井としてラック２のラック上部２３とほぼ同じ高さにし、冷却空間領域Ｃ１の天井５''はラック２の上部よりも高くし、本来の基礎天井部を利用している。勿論、天井５''も吊り天井としてもよい。要は、各ラック２列の天井が実質的に密封状態、すなわち、各空間領域をチャンバー化して、空気を発散されることなく、循環させるようにして冷却効率を高めるようにすればよい。 An embodiment of a local circulation air conditioning system in a preferred data center of the present invention will be described with reference to the drawings.
As shown in the outline of the local circulation air conditioning system in the data center of FIG. 2, the inside of the data center 1 is an electronic device having a heating element such as a server 24 having a built-in fan or an ICT (Information and Communication Technology) device such as a router. Are arranged in parallel, and the space between the two opposing racks is alternately arranged in the cooling space region C1 and the exhaust heat space region H1, and the floor between the two rows of racks A grill floor 3 having long holes penetrating therethrough is spread, and the underfloor space 4 of the grill floor 3 is connected to each other to form a chamber (air passage).
In addition, the ceiling 5 ′ of the exhaust heat space area H1 is substantially the same height as the rack upper part 23 of the rack 2 as a suspended ceiling, and the ceiling 5 ″ of the cooling space area C1 is higher than the upper part of the rack 2, The basic ceiling is used. Of course, the ceiling 5 ″ may be a suspended ceiling. The point is that the ceilings of the two rows of racks are substantially sealed, that is, each space region is made into a chamber so that air can be circulated without being diffused to improve cooling efficiency.

冷却空間領域のラック２間のグリル床３の下面には、冷房空調施設６が設けられるが、グリル床３の直下にはフィルターの作用をする金網６１で覆い、金網６１の下方には送風ファン６２が設けられ、更にその下方にはノン結露のドライコイルである冷却コイル６３が設けられ、冷却コイルの下方は床下空間４の排熱空間領域Ｈ１からの暖気Ｈを吸い込む吸込開口６４が形成されている。
このように、グリル床の直下に冷房空調施設を設置しているため、当然のことながら、ダクト等の付属部品を用いることなく漏れなく冷却空間領域に冷気を給気できるが、その場合（特に人歩行時）床からのゴミ落下によるコイル、ファンの汚れ等が懸念されるが、グリル床の直下の給気側であるコイル、ファンより上部にフィルター作用のある金網を設置することでこうした汚れ等による効率低下、損傷を抑制する。
送風ファン６２は高効率である直流（ＤＣ）モータ(図示せず)で駆動され、送風ファン６２の隣接又は近傍するラック列２の上部に設けた温度センサー６５の検出値に基づいて、高い温度値であれば早く、低い温度値であれば遅く回転するように制御される。
ここで、送風ファン６２を制御するファクターとしてサーバ２４の負荷を検知するものであれば良く、本実施例では、ラック２内の温度としたが、各サーバの消費電流に基づいて送風ファン６２を制御してもよく、両者を組み合わせて制御するようにしてもよく、他の送風ファン６２の制御するファクターとしても良いことは勿論である。 A cooling air-conditioning facility 6 is provided on the lower surface of the grill floor 3 between the racks 2 in the cooling space region. The cooling floor air-conditioning facility 6 is covered immediately below the grill floor 3 with a metal mesh 61 that acts as a filter. 62, and a cooling coil 63, which is a non-condensing dry coil, is provided below the cooling coil. A suction opening 64 for sucking warm air H from the exhaust heat space H1 of the underfloor space 4 is formed below the cooling coil. ing.
In this way, since the cooling air conditioning facility is installed directly under the grill floor, naturally, it is possible to supply the cooling air to the cooling space area without using an accessory such as a duct. There is a concern about dirt on the coil and fan caused by dust falling from the floor), but this dirt can be obtained by installing a coil on the air supply side directly below the grill floor and a wire mesh with a filter function above the fan. Reduces efficiency and damages caused by such factors.
The blower fan 62 is driven by a high-efficiency direct current (DC) motor (not shown), and has a high temperature based on a detection value of a temperature sensor 65 provided on the top of the rack row 2 adjacent to or near the blower fan 62. If the value is low, the rotation is controlled to be fast, and if the temperature is low, the rotation is controlled to be slow.
Here, as a factor for controlling the blower fan 62, it is sufficient to detect the load of the server 24. In this embodiment, the temperature in the rack 2 is used, but the blower fan 62 is controlled based on the current consumption of each server. Of course, they may be controlled in combination, or may be a factor controlled by another blower fan 62.

ところで、データセンター１内は、所謂居住空間ではないので、本実施例では、従来のようなフィルターは配備していない。不織布等の通常のフィルターはどうしても空気搬送の大きな抵抗となり空調エネルギーを消費するので、本実施例では従来のフィルターの代わりに空気搬送抵抗の小さな金網６１を設け、大きな浮遊ゴミ等を除去するようにしている。
したがって、金網６１の網の目(メッシュ)は、金網の網目が３０メッシュ（１インチ(25.4mm)間の目数）程度が良いが、２００メッシュ以下だと空気抵抗(圧力損失)が大きくなり、１０メッシュ以上だと空気中の浮遊ゴミを捕捉できないからである。 By the way, the inside of the data center 1 is not a so-called living space. Therefore, in the present embodiment, a conventional filter is not provided. A normal filter such as a non-woven fabric inevitably has a large resistance for air conveyance and consumes air-conditioning energy. Therefore, in this embodiment, a wire net 61 having a small air conveyance resistance is provided in place of the conventional filter to remove large floating dust. ing.
Therefore, the mesh (mesh) of the wire mesh 61 should be about 30 mesh (number of meshes between 1 inch (25.4 mm)), but if it is less than 200 mesh, the air resistance (pressure loss) will increase. This is because airborne debris in the air cannot be captured when the mesh is 10 mesh or more.

以上のようなデータセンター(電算室)１の構成であり、次に、この構成における空気の流れを説明する。
図２において、本実施例の冷房空調施設６は、金網６１、送風ファン６２、冷却コイル６３、吸込開口６４、温度センサ６５から構成させるが、冷房空調装置６からの冷気Cをグリル床３(吹き出しグリル床31)からサーバ２４を収納したラック２のラック前面パネル２１に送風し、サーバ２４の発熱を処理した暖まった暖気Ｈは、サーバ内蔵ファン２４１等によってラック背面パネル２２から排気され、この暖気Ｈは排熱空間領域Ｈ１の下部のグリル床３(吸い込みグリル床32)の貫通長孔から床下空間４を通過して、吸込開口６４に吸い込まれ循環する。
ここで、サーバ２４のラック２の前面パネル側をサーバ２４に冷風を供給するための給気チャンバーとして囲い冷却空間領域Ｃ１を構成し、サーバ２４のラック２の背面パネル側をサーバ２４からの排熱を排出する排熱空間領域Ｈ１を形成することで、給・排気の温度差を確保し、搬送動力の低減を図っている。 This is the configuration of the data center (computer room) 1 as described above. Next, the air flow in this configuration will be described.
In FIG. 2, the cooling air-conditioning facility 6 of the present embodiment includes a wire mesh 61, a blower fan 62, a cooling coil 63, a suction opening 64, and a temperature sensor 65, but cool air C from the cooling air-conditioning apparatus 6 is transferred to the grill floor 3 ( The warm air H that has been blown from the blowout grill floor 31) to the rack front panel 21 of the rack 2 housing the server 24 and processed the heat generated by the server 24 is exhausted from the rack back panel 22 by the server built-in fan 241 and the like. The warm air H passes through the underfloor space 4 from the through-hole of the grill floor 3 (suction grill floor 32) below the exhaust heat space area H1, and is sucked into the suction opening 64 and circulates.
Here, the front panel side of the rack 2 of the server 24 is enclosed as an air supply chamber for supplying cold air to the server 24 to form a cooling space region C1, and the rear panel side of the rack 2 of the server 24 is discharged from the server 24. By forming the exhaust heat space area H1 for discharging heat, a temperature difference between supply and exhaust is ensured, and the conveyance power is reduced.

ここで、ほぼ同じＩＴＣ装置（発熱体を有する電子装置)の熱負荷を処理する場合での従来システムと本発明のシステムの圧力損失を比較する。
従来システムは、図１での１つのグリル床を用い他を閉鎖した状態で計算し、本発明システムも図２での１つの吹き出しグリル床３１と、隣り合う２つの吸い込みグリル床３２を用い他のグリル床を閉鎖した状態で算出した。

[従来システム] [本発明システム]
風量 25,000 m3/h 1,500 m3/h
コイル面速 2.9 m/s 1.6 m/s

機外損失 損失
空調機吹き出し 37 Pa 金網 3 Pa
グリル床(吹出し) 7 Pa グリル床(吹き出し) 6 Pa
前面パネル 2 Pa 前面パネル 2 Pa
背面パネル 2 Pa 背面パネル 2 Pa
天井チャンバー吸込み 3 Pa グリル床(吸い込み) 6 Pa
ファン吸い込み 3 Pa
機内損失 ドライコイル 25 Pa
吸込圧損 32 Pa
プレフィルター 144 Pa
冷水コイル 91 Pa
全圧力損失 ３１８Pa(全圧Pt) ４７Pa(全圧Pt)

このように、従来のシステム全体での圧力損失が３１８Pa(全圧Pt)であったのに対して、本発明のシステム全体での圧力損失は４７Pa(全圧Pt)と劇的に減少することが判る。 Here, the pressure loss of the conventional system and the system of the present invention in the case of processing the heat load of almost the same ITC device (electronic device having a heating element) will be compared.
The conventional system calculates with one grill floor in FIG. 1 and the other closed, and the system of the present invention also uses one blow grill floor 31 in FIG. 2 and two suction grill floors 32 adjacent to each other. The calculation was made with the grill floor closed.

[Conventional system] [System of the present invention]
Air flow 25,000 m 3 / h 1,500 m 3 / h
Coil surface speed 2.9 m / s 1.6 m / s

External loss Loss Air conditioner blowout 37 Pa Wire mesh 3 Pa
Grill floor (out) 7 Pa Grill floor (out) 6 Pa
Front panel 2 Pa Front panel 2 Pa
Rear panel 2 Pa Rear panel 2 Pa
Ceiling chamber suction 3 Pa Grill floor (suction) 6 Pa
Fan suck 3 Pa
In-machine loss Dry coil 25 Pa
Suction pressure loss 32 Pa
Prefilter 144 Pa
Cold water coil 91 Pa
Total pressure loss 318Pa (total pressure Pt) 47Pa (total pressure Pt)

Thus, the pressure loss in the entire system of the present invention is dramatically reduced to 47 Pa (total pressure Pt), whereas the pressure loss in the entire system of the present invention is 318 Pa (total pressure Pt). I understand.

ところで、本発明の実施例のシステムは、前記のように空調搬送動力を著しく削減できる他に、サーバ室の床下空間をチャンバーとて利用するので、スペース的に有利であるが、この床下スペースにファン、コイル、冷水配管等を配置してサーバ室の有効スペースを確保することができる。
さらに、この床下スペースにトラス構造を採用して、データセンター（サーバ室）内の柱を無くすことにより、サーバ室のフレキシビリティを確保するようにしても良い。 By the way, the system of the embodiment of the present invention is advantageous in terms of space since the air-conditioning conveyance power can be remarkably reduced as described above and the underfloor space of the server room is used as a chamber. An effective space in the server room can be secured by arranging fans, coils, cold water piping, and the like.
Furthermore, the flexibility of the server room may be ensured by adopting a truss structure in the underfloor space and eliminating the pillar in the data center (server room).

以上のように、本発明の実施例では、ラック列間の空間が冷却空間領域と排熱空間領域とに交互に配置させて、冷却空間領域と排熱空間領域とのいずれか一方の各ラック列の上部が天井で実質的に密封して、隣り合うラック列間で局部的に空気を循環させるので、空調搬送抵抗を削減し、空調エネルギーを削減することができる。また、冷却コイル６３や送風ファン６２等をデータセンター１のサーバ２４室の床下に収納したので、サーバ室用の空調施設のフロアーが不要となり、さらに空調施設のスペースを別途増加する必要もない。更に、各床下の送風ファン６２は、局部毎にサーバの稼働状況に応じてきめ細かくファンの風量制御ができるので、温度ムラやエネルギー消費の無駄を省くことができ、サーバ室の熱環境向上や省エネが可能となる。
なお、本発明の特徴を損うものでなければ、上記の実施例に限定されるものでないことは勿論である。 As described above, in the embodiment of the present invention, the space between the rack rows is alternately arranged in the cooling space region and the exhaust heat space region, and each rack in either the cooling space region or the exhaust heat space region is arranged. Since the upper part of the row is substantially sealed by the ceiling and air is circulated locally between adjacent rack rows, the air-conditioning conveyance resistance can be reduced and the air-conditioning energy can be reduced. In addition, since the cooling coil 63, the blower fan 62, and the like are housed under the floor of the server 24 room of the data center 1, the floor of the air conditioning facility for the server room becomes unnecessary, and it is not necessary to separately increase the space of the air conditioning facility. Furthermore, since the blower fans 62 under each floor can finely control the fan air volume according to the operation status of the server for each local area, temperature unevenness and waste of energy consumption can be eliminated, and the thermal environment of the server room can be improved and energy can be saved. Is possible.
Needless to say, the present invention is not limited to the above-described embodiments as long as the features of the present invention are not impaired.

Ｃ・・冷気、Ｃ１・・冷却空間領域、
Ｈ・・暖気、Ｈ１・・排熱空間領域、
１・・ データセンター、
２・・ラック、２１・・ラック前面パネル、２２・・ラック背面パネル、
２３・・ラック上部、
２４・・サーバ、２４１・・サーバ内蔵ファン、
３・・グリル床、３１・・吹き出しグリル床、３２・・吸い込みグリル床、
４・・床下空間（チャンバー）、
５、５’、５’’・・天井、
６・・冷房空調施設、６１・・金網、６２・・送風ファン、
６３・・冷却コイル、６４・・吸込開口、６５・・温度センサ C ... Cold air, C1 ... Cooling space area,
H ... Warm air, H1 ... Waste heat space area,
1. Data center,
2 .. Rack, 21 .. Rack front panel, 22 .. Rack back panel,
23 .. Rack upper part,
24 .. Server, 241 .. Server built-in fan,
3 .... Grill floor, 31 ... Blowout grill floor, 32 ... Suction grill floor,
4. Under space (chamber),
5, 5 ', 5''... ceiling
6. Cooling air-conditioning facilities, 61 ... Wire mesh, 62 ... Fans,
63 ... Cooling coil, 64 ... Suction opening, 65 ... Temperature sensor

Claims (4)

発熱体を有する電子装置を収納した複数のラック列が並列に配置され、対向するラック列間の空間が冷却空間領域と排熱空間領域とに交互に配置され、床下空間が連結された施設において、
前記冷却空間領域のラック列間のグリル床の下面には冷房空調施設が設けられ、該グリル床の直下はフィルター作用を有する金網で覆い、該金網の下方には送風ファン及び冷却コイルが設けられ、その下方は床下空間の排熱空間領域からの暖気を吸い込む吸込開口が形成され、
冷気を前記グリル床から上方の前記冷却空間領域に送風し、該冷却空間領域の冷気で電子装置の熱負荷を処理して隣接する前記排熱空間領域に排気し、該排熱空間領域の暖気を前記グリル床から吸気して前記冷却コイルに循環させるようにしたことを特徴とするデータセンターにおける局部循環空調システム。 In a facility in which a plurality of rack rows containing electronic devices having heating elements are arranged in parallel, spaces between opposing rack rows are alternately arranged in a cooling space region and an exhaust heat space region, and an underfloor space is connected ,
A cooling air-conditioning facility is provided on the lower surface of the grill floor between the rack rows in the cooling space area, and a wire mesh having a filter function is covered immediately below the grill floor, and a blower fan and a cooling coil are provided below the wire mesh. In the lower part, a suction opening for sucking warm air from the exhaust heat space area of the underfloor space is formed,
Cool air is blown from the grill floor to the cooling space area above, and the heat load of the electronic device is processed by the cold air in the cooling space area and exhausted to the adjacent exhaust heat space area. A local circulation air-conditioning system in a data center, wherein air is sucked from the grill floor and circulated through the cooling coil. 前記冷却空間領域と排熱空間領域とのいずれか一方の各ラック列の上部が天井で実質的に密封されることを特徴とする請求項１に記載のデータセンターにおける局部循環空調システム。   The local circulation air conditioning system in a data center according to claim 1, wherein an upper part of each rack row of either the cooling space region or the exhaust heat space region is substantially sealed with a ceiling. 前記送風ファンの送風量は、隣接するラック列内の負荷を検知し、他の送風ファンとは独立して制御するようにしたことを特徴とする請求項１又は２に記載のデータセンターにおける局部循環空調システム。   The local area in the data center according to claim 1 or 2, wherein the blower volume of the blower fan is controlled independently of other blower fans by detecting a load in an adjacent rack row. Circulating air conditioning system. 前記金網は網目が２００乃至１０メッシュのフィルターとしたことを特徴とする請求項１又は２又は３に記載のデータセンターにおける局部循環空調システム。   The local circulation air conditioning system in a data center according to claim 1, 2 or 3, wherein the wire mesh is a filter having a mesh of 200 to 10 mesh.
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