JP2012017911A - System for control of under-floor air conditioning equipment and control method therefor, as well as control program - Google Patents

System for control of under-floor air conditioning equipment and control method therefor, as well as control program Download PDF

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JP2012017911A
JP2012017911A JP2010155406A JP2010155406A JP2012017911A JP 2012017911 A JP2012017911 A JP 2012017911A JP 2010155406 A JP2010155406 A JP 2010155406A JP 2010155406 A JP2010155406 A JP 2010155406A JP 2012017911 A JP2012017911 A JP 2012017911A
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JP5140705B2 (en
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Toshikatsu Ueda
俊克 植田
Shintaro Sakamoto
晋太郎 酒本
Masahide Fukui
雅英 福井
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Shinryo Corp
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Abstract

PROBLEM TO BE SOLVED: To improve amenity inside a room, and to simplify a system.SOLUTION: A system for control of under-floor air conditioning equipment characteristically includes: a device for calculating a tentative temperature manipulated variable from a difference between tentative set temperature and detected temperature of cooling air; a device for calculating an increasing and decreasing amount of a heat quantity from the tentative temperature manipulated variable; a device for calculating a manipulated variable of a blowoff air volume of the cooling air from the increasing and decreasing amount of the heat quantity; a device for adding the tentative set air volume of the cooling air to the manipulated variable of a blowoff air volume of the cooling air to calculate a control air volume; a device for calculating an actual manipulated variable of blowoff temperature of the cooling air from the manipulated variable of the blowoff air volume and the increasing and decreasing amount of the heat quantity; a device for adding the tentative set temperature of the cooling air to the actual manipulated variable of the blowoff temperature of the cooling air to calculate control temperature; and a device for controlling the blowoff air quantity and the blowoff temperature of the cooling air based on the control air volume and the control temperature.

Description

本発明は、空調機から床下の空間に供給した冷房用空気を床吹出し口から室内に吹き出して冷房を行う床吹出し空調設備の制御システム及びその制御方法並びにそのプログラムに関する。   The present invention relates to a control system, a control method, and a program for a floor blowing air-conditioning system that cools air by blowing cooling air supplied from an air conditioner into a space under the floor from a floor blowing outlet.

従来、事務所ビルなどの建築物において、室内を所望な環境に保持するための空調設備として、ＯＡフロアと床スラブとの間の空間を給気ダクトとして利用し、ＯＡフロアに設置した床吹出し口から冷房用空気を吹き出して室内を冷房する床吹出し方式の空調設備が知られている。   Conventionally, in a building such as an office building, as an air conditioning system for keeping the room in a desired environment, a floor outlet installed on the OA floor using the space between the OA floor and the floor slab as an air supply duct 2. Description of the Related Art A floor blowing type air conditioner that blows out air for cooling from the mouth and cools the room is known.

この従来の床吹出し方式の空調設備では、室内の設定温度と室内の検出温度との差や室内と床下との差圧に基づいて、床吹出し口の開度や個数を調整することにより床吹出し口から吹き出される冷房用空気の風量を増減する一方、吹出し温度差を一定とする制御システムや制御方法が採用されている（例えば、特許文献１又は２参照）。   In this conventional floor air-conditioning system, the floor outlet is adjusted by adjusting the opening and number of floor outlets based on the difference between the set temperature in the room and the detected temperature in the room and the pressure difference between the room and the floor. A control system and a control method are adopted in which the air flow rate of the cooling air blown from the mouth is increased or decreased while the blowout temperature difference is made constant (see, for example, Patent Document 1 or 2).

特開平１１−２４１８５４号公報Japanese Patent Laid-Open No. 11-241854 特開２００５−２６５２８０号公報JP 2005-265280 A

しかしながら、上記した従来の床吹出し空調方式の制御システムや制御方法では、冷房用空気の吹出し風量のみを増減させて制御しているため、床吹出し口からの吹出し空気の到達距離が風量の増減に応じて変化し、特に冷房の部分負荷時に吹出し風量が減少することにより吹出し空気の垂直方向の到達距離が短くなり、足元が寒く、頭部が暑くなるといったように、室内の上下方向の温度分布にムラが生じ、室内の快適性の向上を図ることが難しいといった問題があった。   However, in the control system and control method of the conventional floor blowing air conditioning system described above, since the control is performed by increasing / decreasing only the air blowing amount of the cooling air, the reach distance of the blowing air from the floor blowing port is the increase / decrease of the air amount. The temperature distribution in the vertical direction of the room is such that the vertical distance of the blown air decreases, the feet become cold, the head gets hot, etc. As a result, there is a problem that unevenness occurs and it is difficult to improve indoor comfort.

また、室内の冷房負荷の変化に応じて、床吹出し口の開度や個数を調整する場合には、室内の水平方向の温度分布にもムラが生じ易く、室内の快適性を高めることが難しいといった問題があった。   In addition, when adjusting the opening and number of floor outlets according to changes in the indoor cooling load, the horizontal temperature distribution in the room is likely to be uneven, and it is difficult to improve indoor comfort. There was a problem.

さらに、室内と床下との差圧を利用して風量を制御する場合には、差圧を計測する必要があるため、システムが複雑化するといった問題もあった。   Furthermore, when the air volume is controlled using the pressure difference between the room and the floor, there is a problem that the system becomes complicated because the pressure difference needs to be measured.

本発明は上記した課題を解決すべくなされるものであり、室内の快適性の向上を図ると共に、システムの簡素化を図ることのできる床吹出し空調設備の制御システム及びその制御方法並びに制御プログラムを提供することを目的とするものである。   The present invention has been made to solve the above-described problems, and provides a control system, a control method, and a control program for a floor blowing air-conditioning system capable of improving indoor comfort and simplifying the system. It is intended to provide.

上記した目的を達成するため、本発明は、空調機から床下の空間に供給した冷房用空気を床吹出し口から室内に吹き出して冷房を行う床吹出し空調設備の制御システムであって、前記冷房用空気の仮の設定温度と検出温度との差から仮の温度操作量を算出する仮温度操作量算出手段と、該仮温度操作量算出手段が算出した仮の温度操作量から熱量の増減量を算出する熱量増減量算出手段と、該熱量増減量算出手段が算出した熱量の増減量から前記冷房用空気の吹出し風量の操作量を算出する吹出し風量操作量算出手段と、該吹出し風量操作量算出手段が算出した前記冷房用空気の吹出し風量の操作量に前記冷房用空気の仮の設定風量を加えて制御風量を算出する制御風量算出手段と、前記吹出し風量操作量算出手段が算出した吹出し風量の操作量と前記熱量増減量算出手段が算出した熱量の増減量から前記冷房用空気の吹出し温度の実際の操作量を算出する実吹出し温度操作量算出手段と、該温度操作量算出手段が算出した前記冷房用空気の吹出し温度の実際の操作量に前記冷房用空気の仮の設定温度を加えて制御温度を算出する制御温度算出手段と、前記制御風量算出手段が算出した制御風量及び前記制御温度算出手段が算出した制御温度に基づき、前記冷房用空気の吹出し風量及び吹出し温度をそれぞれ制御する制御手段と、を備えていることを特徴とする。   In order to achieve the above-described object, the present invention provides a control system for a floor blowing air conditioner that blows cooling air supplied from an air conditioner into a space under the floor into a room from a floor blowing outlet, and performs cooling. Temporary temperature manipulated variable calculating means for calculating a temporary temperature manipulated variable from the difference between the provisional set temperature of air and the detected temperature, and an increase / decrease amount of heat from the temporary temperature manipulated variable calculated by the temporary temperature manipulated variable calculating means. Calculation unit for calculating the amount of heat increase / decrease, calculation unit for calculating the amount of air flow for calculating the amount of air flow for cooling air based on the amount of increase / decrease in the amount of heat calculated by the unit for calculating heat amount increase / decrease, Control air volume calculating means for calculating a control air volume by adding a provisional set air volume of the cooling air to an operation amount of the cooling air blowing air volume calculated by the means, and a blowing air volume calculated by the blow air volume operation amount calculating means Operation The actual air flow temperature manipulated variable calculating means for calculating the actual manipulated variable of the cooling air blow temperature from the amount of heat and the amount of heat calculated by the heat quantity increase / decrease calculating means, and the temperature manipulated variable calculating means Control temperature calculation means for calculating a control temperature by adding a temporary set temperature of the cooling air to an actual operation amount of the cooling air blowing temperature, control air volume calculated by the control air volume calculation means, and control temperature calculation And control means for controlling the blowout air volume and the blowout temperature of the cooling air based on the control temperature calculated by the means.

そして、本発明に係る床吹出し空調設備の制御システムにおいて、前記吹出し風量操作量算出手段は、前記熱量増減量算出手段が算出した熱量の増減量に対して１／２乗〜１／３乗した値を前記冷房用空気の吹出し風量の操作量とするのが好ましい。   And in the control system of the floor blowing air-conditioning equipment according to the present invention, the blowing air volume manipulated variable calculation means has raised the power increase / decrease amount calculated by the heat quantity increase / decrease calculation means by a power of 1/2 to 1/3. It is preferable that the value be an operation amount of the cooling air blowing amount.

また、本発明は、空調機から床下の空間に供給した冷房用空気を床吹出し口から室内に吹き出して冷房を行う床吹出し空調設備の制御方法であって、前記冷房用空気の仮の設定温度と検出温度との差から仮の温度操作量を算出する仮温度操作量算出ステップと、該仮温度操作量算出ステップで算出した仮の温度操作量から熱量の増減量を算出する熱量増減量算出ステップと、該熱量増減量算出ステップで算出した熱量の増減量から前記冷房用空気の吹出し風量の操作量を算出する吹出し風量操作量算出ステップと、該吹出し風量操作量算出ステップで算出した前記冷房用空気の吹出し風量の操作量に前記冷房用空気の仮の設定風量を加えて制御風量を算出する制御風量算出ステップと、前記吹出し風量操作量算出数轍鮒で算出した吹出し風量の操作量と前記熱量増減量算出ステップで算出した熱量の増減量から前記冷房用空気の吹出し温度の実際の操作量を算出する実吹出し温度操作量算出ステップと、該温度操作量算出ステップで算出した前記冷房用空気の吹出し温度の実際の操作量に前記冷房用空気の仮の設定温度を加えて制御温度を算出する制御温度算出ステップと、前記制御風量算出ステップで算出した制御風量及び前記制御温度算出ステップで算出した制御温度に基づき、前記冷房用空気の吹出し風量及び吹出し温度をそれぞれ制御する制御ステップと、を含むことを特徴とする。   The present invention also relates to a control method for a floor blowing air conditioner that cools by blowing air for cooling supplied from an air conditioner into a space under the floor from a floor blowing outlet into the room, and a temporary set temperature of the cooling air A temporary temperature manipulated variable calculation step for calculating a temporary temperature manipulated variable from the difference between the detected temperature and the detected temperature, and a calorific value increase / decrease amount calculation for calculating an increase / decrease amount of heat from the temporary temperature manipulated variable calculated in the temporary temperature manipulated variable calculation step A step of calculating an operation amount of the air flow for the cooling air calculated from an increase / decrease amount of the heat amount calculated in the heat amount increase / decrease amount calculation step, and the cooling calculated in the air flow amount operation amount calculation step. A control air volume calculation step of calculating a control air volume by adding a provisional air volume of the cooling air to an operation amount of the air blowing air volume, and a blowing air volume calculated by the blow air volume operation amount calculation number 轍 鮒Calculated by the actual operation amount calculation step of calculating the actual operation amount of the cooling air discharge temperature from the operation amount and the increase / decrease amount of the heat amount calculated in the heat amount increase / decrease amount calculation step, and the temperature operation amount calculation step A control temperature calculating step of calculating a control temperature by adding a provisional set temperature of the cooling air to an actual operation amount of the cooling air blowing temperature; the control air volume calculated in the control air volume calculating step; and the control temperature And a control step of controlling the blowing air volume and the blowing temperature of the cooling air based on the control temperature calculated in the calculating step.

そして、本発明に係る床吹出し空調設備の制御方法において、前記吹出し風量操作量算出ステップは、前記熱量増減量算出ステップで算出した熱量の増減量に対して１／２乗〜１／３乗した値を前記冷房用空気の吹出し風量の操作量とするのが好ましい。   And in the control method of the floor blowing air-conditioning equipment according to the present invention, the blowing air amount manipulated variable calculation step is ½ power to ３ power to the heat amount increase / decrease amount calculated in the heat amount increase / decrease amount calculation step. It is preferable that the value be an operation amount of the cooling air blowing amount.

さらに、本発明に係る床吹出し空調設備の制御プログラムは、上記した床吹出し空調設備の制御方法の各ステップをコンピュータに実行させることを特徴とする。   Furthermore, a control program for a floor blowing air conditioning system according to the present invention causes a computer to execute each step of the above-described control method for a floor blowing air conditioning system.

本発明によれば、室内の快適性の向上を図ると共に、システムの簡素化を図ることができる。   According to the present invention, it is possible to improve indoor comfort and simplify the system.

本発明の実施の形態に係る床吹出し空調設備の制御システムを示す概念図である。It is a key map showing a control system of floor blowing air-conditioning equipment concerning an embodiment of the invention. 本発明の実施の形態に係る床吹出し空調設備の制御システムを示す構成ブロック図である。It is a block diagram which shows the control system of the floor blowing air conditioning equipment which concerns on embodiment of this invention. 本発明の実施の形態に係る床吹出し空調設備の制御システムの制御フローを示すフローチャートである。It is a flowchart which shows the control flow of the control system of the floor blowing air conditioning equipment which concerns on embodiment of this invention. 本発明の実施の形態に係る床吹出し空調設備の制御システムにおいて床吹出し口からの吹出し気流の垂直方向の到達距離が１．８ｍとなる時の吹出し条件を示す図である。It is a figure which shows the blowing conditions when the reach | attainment distance of the perpendicular direction of the blowing airflow from a floor blowing outlet becomes 1.8 m in the control system of the floor blowing air-conditioning equipment concerning embodiment of this invention. 本発明の実施の形態に係る床吹出し空調設備の制御システムにおける床吹出し口からの吹出し気流の垂直方向の到達距離と従来の制御システムにおける床吹出し口からの吹出し気流の垂直方向の到達距離とを比較して示す模式図である。The vertical distance of the blown airflow from the floor outlet in the control system of the floor outlet air conditioning equipment according to the embodiment of the present invention and the vertical distance of the blown airflow from the floor outlet in the conventional control system It is a schematic diagram shown in comparison.

以下、図面を参照しつつ、本発明の実施の形態について説明する。ここで、図１は本発明の実施の形態に係る床吹出し空調設備の制御システムを示す概念図、図２は本発明の実施の形態に係る床吹出し空調設備の制御システムを示す構成ブロック図である。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. Here, FIG. 1 is a conceptual diagram showing a control system for floor blowing air-conditioning equipment according to an embodiment of the present invention, and FIG. 2 is a block diagram showing a control system for floor blowing air-conditioning equipment according to an embodiment of the present invention. is there.

本発明の実施の形態に係る床吹出し空調設備の制御システムは、ゾーン毎に冷房可能な床吹出し空調設備の運転を制御するためのものであり、この空調設備には、図１に示すように、機械室内に、コイル１やファン２を備える床置型の空調機３と、外気導入ダクト４に取り付けられるＶＡＶ（Variable Air Volume）５と、空調設備の運転を制御するコントローラ６とが設けられている。また、事務室内の一ゾーンには、温度センサー７が設置されていると共に、複数の在席者に対応してＯＡフロア８に床吹出し口９が設置されており、ＯＡフロア８と床スラブ１０との間の空間１１が給気ダクトとして利用されるようになっている。さらに、事務室と機械室との間にはモータダンパー１２により開閉制御可能な還気口１３が設けられている。   The control system for floor blowing air-conditioning equipment according to an embodiment of the present invention is for controlling the operation of floor blowing air-conditioning equipment that can be cooled for each zone. As shown in FIG. In the machine room, a floor-mounted air conditioner 3 having a coil 1 and a fan 2, a VAV (Variable Air Volume) 5 attached to the outside air introduction duct 4, and a controller 6 for controlling the operation of the air conditioning equipment are provided. Yes. In addition, a temperature sensor 7 is installed in one zone of the office room, and a floor outlet 9 is installed in the OA floor 8 corresponding to a plurality of people, and the OA floor 8 and the floor slab 10 are provided. The space 11 between the two is used as an air supply duct. Further, a return air opening 13 that can be controlled to open and close by the motor damper 12 is provided between the office room and the machine room.

コントローラ６は、中央監視室に設置される中央監視制御装置（図示省略）と共に本発明の実施の形態に係る床吹出し空調設備の制御システムを主として構成するものであり、この制御システムは、図２に示すように、演算部１４、制御部１５と、ＲＡＭ（Random Access Memory）やＲＯＭ（Read Only Memory）などから成る記憶部１６と、事務室側に設置される温度センサー７などとの接続を中継する事務室側Ｉ／Ｆ１７と、空調機３やＶＡＶ５などとの接続を中継する空調機器側Ｉ／Ｆ１８とから主に構成されている。そして、制御部１５は、記憶部１６のＲＯＭに格納されている制御プログラムに従って、後述する冷房用空気の吹出し風量と吹出し温度を共に制御するステップなどの動作を実行すると共に、演算部１４に対して、後述する制御風量や制御温度を算出するステップなどの動作を実行するよう命令を送出する。   The controller 6 mainly constitutes a control system for the floor blowing air conditioning equipment according to the embodiment of the present invention, together with a central monitoring control device (not shown) installed in the central monitoring room. As shown in FIG. 4, the calculation unit 14, the control unit 15, the storage unit 16 including a RAM (Random Access Memory) and a ROM (Read Only Memory), and the temperature sensor 7 installed on the office side are connected. It is mainly composed of an office side I / F 17 that relays and an air conditioner side I / F 18 that relays connections to the air conditioner 3 and the VAV 5. And the control part 15 performs operation | movement of the step etc. which control both the blowing air volume and the blowing temperature of the cooling air mentioned later according to the control program stored in ROM of the memory | storage part 16, and also with respect to the calculating part 14 Then, a command is sent to execute an operation such as a step of calculating a control air volume and a control temperature, which will be described later.

次に、図面を参照しつつ、本発明の実施の形態に係る床吹出し空調設備の制御システムの動作について説明する。ここで、図３は本発明の実施の形態に係る床吹出し空調設備の制御システムの制御フローを示すフローチャート、図４は本発明の実施の形態に係る床吹出し空調設備の制御システムにおいて床吹出し口からの吹出し気流の垂直方向の到達距離が１．８ｍとなる時の吹出し条件を示す図、図５は本発明の実施の形態に係る床吹出し空調設備の制御システムにおける床吹出し口からの吹出し気流の垂直方向の到達距離と従来の制御システムにおける床吹出し口からの吹出し気流の垂直方向の到達距離とを比較して示す模式図である。   Next, the operation of the control system for the floor blowing air conditioning equipment according to the embodiment of the present invention will be described with reference to the drawings. Here, FIG. 3 is a flowchart showing a control flow of the control system of the floor blowing air-conditioning equipment according to the embodiment of the present invention, and FIG. 4 is a floor blowing outlet in the control system of the floor blowing air-conditioning equipment according to the embodiment of the present invention. The figure which shows the blowing conditions when the reach | attainment distance of the blowing airflow from the vertical direction becomes 1.8 m, FIG. 5: the blowing airflow from the floor outlet in the control system of the floor blowing air-conditioning equipment concerning embodiment of this invention It is a schematic diagram which compares the reach distance of the vertical direction of this, and the reach distance of the vertical direction of the blowing airflow from the floor blowing outlet in the conventional control system.

先ず、設計段階において、メーカーのカタログ等から、予め設定された冷房用空気の仮の吹出し温度Ｔ及び仮の吹出し風量Ｑにおいて、床吹出し口９から吹き出される冷房用空気の残風速が０．２５ｍ／ｓとなる時の垂直方向の到達距離が居住域高さである１．８ｍとなるように床吹出し口９を選定する。   First, at the design stage, the residual air velocity of the cooling air blown out from the floor outlet 9 is set to 0. 0 at a preset temporary blowing temperature T and temporary blowing amount Q of cooling air from a manufacturer's catalog or the like. The floor outlet 9 is selected so that the vertical reach when it becomes 25 m / s is 1.8 m, which is the height of the living area.

この前提条件の下、演算部１４は、図３のステップ１に示すように、予め記憶部１６に格納された事務室内の前記仮の設定温度Ｔと温度センサー７が検出した事務室内の検出温度Ｔｒとの差から室温の偏差ｅを算出する。そして、演算部１４は、ステップ２に示すように、この偏差ｅとＰＩＤ制御の各ゲインＫＰ、ＫＤ、ＫＩを用いて、床吹出し口９から吹出される冷房用空気の風量Ｑを一定と仮定した場合の仮の温度操作量ΔＴを算出する。 Under this precondition, the calculation unit 14, as shown in Step 1 of FIG. 3, the temporary set temperature T stored in the storage unit 16 in advance and the detected temperature detected in the office by the temperature sensor 7. The deviation e of room temperature is calculated from the difference from Tr . Then, as shown in step 2, the calculation unit 14 uses the deviation e and the gains K P , K D , and K I of the PID control to calculate the air volume Q of the cooling air blown out from the floor outlet 9. A temporary temperature manipulated variable ΔT when it is assumed to be constant is calculated.

次に、演算部１４は、ステップ３において、この仮の温度操作量ΔＴに、空気の比熱ｃ及び比重量ρと前記仮の吹出し風量Ｑとを乗じることにより、熱量の増減量Δｑを算出する。   Next, in step 3, the calculation unit 14 multiplies the provisional temperature manipulated variable ΔT by the specific heat c and specific weight ρ of air and the provisional blown air amount Q to calculate the increase / decrease amount Δq of the amount of heat. .

さらに、演算部１４は、ステップ４において、この熱量の増減量Δｑを１／３乗した値に前記仮の吹出し風量Ｑを乗じることにより、冷房用空気の吹出し風量の操作量ΔＱ’を算出する。   Further, in step 4, the calculation unit 14 calculates an operation amount ΔQ ′ of the cooling air blowing air amount by multiplying the value obtained by multiplying the heat amount increase / decrease amount Δq by 1/3 to the provisional blowing air amount Q. .

ここで、下表１は、公知の実験式であるＶｘ／Ｖｏ＝Ｋ×Ｄｏ／Ｘ×（１±１．９×Ａｒ／Ｋ×（Ｘ／Ｄｏ）２）１／３（空気調和・衛生工学会編、空気調和・衛生工学便覧第１３版、３巻、２００２、Ｐ２８６）により、床吹出し口９からの垂直距離Ｘでの風速を算出した結果を示しており、Ｖｘは吹出し口からの距離Ｘでの風速、Ｖｏは吹出し口での吹出し風速、Ｋは吹出し口定数（＝５）、Ｄｏは吹出し口径、Ｘは吹出し口からの距離、Ａｒはアルキメデス数（＝ｇβΔＴＤｏ／Ｖｏ２）、ｇは重力加速度、βは体膨張率、ΔＴは吹出し温度差を示している。 Here, Table 1 below is a known empirical formula: Vx / Vo = K × Do / X × (1 ± 1.9 × Ar / K × (X / Do) 2 ) 1/3 (Air Conditioning / Hygiene The results of calculating the wind speed at the vertical distance X from the floor outlet 9 according to the Society of Engineering, Air Conditioning / Hygiene Engineering Handbook 13th Edition, Volume 3, 2002, P286) are shown. Wind speed at distance X, Vo is blown air speed at outlet, K is outlet constant (= 5), Do is outlet diameter, X is distance from outlet, Ar is Archimedes number (= gβΔTDo / Vo 2 ), g represents gravitational acceleration, β represents a body expansion coefficient, and ΔT represents a blowing temperature difference.

この表１を線形補間することにより、垂直方向の到達距離が１．８ｍとなる吹出し温度差ΔＴと風量Ｑと負荷量ｑの各条件を求め、これらの関係をグラフに示したものが図４である。そして、図４中の風量Ｑの近似曲線（図４中、破線で示す。）を近似式に当て嵌めることにより、前記ステップ４において風量の操作量ΔＱ’を算出する式を得た。   By linearly interpolating Table 1, the conditions of the blowing temperature difference ΔT, the air flow rate Q, and the load amount q at which the reach distance in the vertical direction becomes 1.8 m are obtained, and these relationships are shown in the graph in FIG. It is. Then, by fitting the approximate curve of the air volume Q in FIG. 4 (indicated by a broken line in FIG. 4) to the approximate expression, an expression for calculating the air volume manipulated variable ΔQ ′ was obtained in step 4.

Figure 2012017911
次のステップ５では、演算部１４は、このようにして算出した吹出し風量の操作量ΔＱ’に前記予め設定された仮の吹出し風量Ｑを加え、実際に制御する際に吹出し風量の目標値となる制御風量Ｑ’を算出する。
Figure 2012017911
 In the next step 5, the calculation unit 14 adds the preset provisional blowing air amount Q to the operation amount ΔQ ′ of the blowing air amount calculated in this manner, and sets the target value of the blowing air amount when actually controlling. The control air volume Q ′ is calculated.

また、ステップ６では、演算部１４は、前記ステップ３において算出した熱量の増減量Δｑを、前記ステップ４において算出した風量の操作量ΔＱ’に空気の比熱ｃ及び比重量ρを乗じた値で除することにより、冷房用空気の吹出し温度の実際の操作量ΔＴ’を算出する。   In step 6, the calculation unit 14 is a value obtained by multiplying the increase / decrease amount Δq of the heat amount calculated in step 3 by the air specific heat c and the specific weight ρ to the air flow operation amount ΔQ ′ calculated in step 4. By dividing, the actual manipulated variable ΔT ′ of the cooling air blowing temperature is calculated.

さらに、ステップ７において、演算部１４は、このように算出した吹出し温度の実際の操作量ΔＴ’に前記予め設定された仮の吹出し温度Ｔを加え、実際に制御する際に吹出し温度の目標値となる制御温度Ｔ’を算出する。   Furthermore, in step 7, the calculation unit 14 adds the preset temporary blowing temperature T to the actual manipulated variable ΔT ′ of the blowing temperature thus calculated, and the target value of the blowing temperature when actually controlling. A control temperature T ′ is calculated.

そして、制御部１５は、ステップ８に示すように、床吹出し口９から吹出される前記冷房用空気の風量が前記ステップ５において算出された制御風量Ｑ’になると共に前記冷房用空気の吹出し温度が前記ステップ７において算出された制御温度Ｔ’となるように、空調機３のコイル１を流通する冷水の流量や温度、ファン２の回転数などを制御する。   Then, as shown in step 8, the control unit 15 determines that the air volume of the cooling air blown from the floor outlet 9 becomes the control air volume Q ′ calculated in the step 5 and the air temperature of the cooling air. , The flow rate and temperature of the cold water flowing through the coil 1 of the air conditioner 3, the rotational speed of the fan 2, and the like are controlled so that the control temperature T ′ calculated in step 7 is reached.

このように上記した実施の形態に係る床吹出し空調設備の制御システムによれば、前記冷房用空気の吹出し風量と吹出し温度を共に制御することにより、吹出し気流の垂直方向の到達距離を常に一定の高さに保持することができる。   As described above, according to the control system for a floor blowing air-conditioning facility according to the above-described embodiment, by controlling both the blowing air amount and the blowing temperature of the cooling air, the vertical reach distance of the blowing air flow is always constant. Can be held at a height.

すなわち、例えば、図５の（１）に示すように、冷房最大熱負荷時の冷房用空気の吹出し条件（風量Ｑ、吹出し温度差ΔＴ）における吹出し気流の垂直方向の到達距離をＬとすると、冷房時の熱負荷が最大熱負荷の半分になった場合、従来のように冷房用空気の吹出し風量のみを増減させて制御する変風量方式では、図５の（２）に示すように、吹出し風量が０．５Ｑ（吹出し温度差はΔＴで一定）となり、浮力の影響を考慮すると、垂直方向の到達距離は０．５Ｌ以下となる。   That is, for example, as shown in (1) of FIG. 5, assuming that the reach distance in the vertical direction of the blown air flow in the cooling air blowing condition (air flow rate Q, blowing temperature difference ΔT) at the maximum cooling heat load is L, When the heat load during cooling is half of the maximum heat load, as in the conventional method, the variable air volume method in which only the air volume of the cooling air is controlled by increasing / decreasing the air volume is controlled as shown in (2) of FIG. The air volume is 0.5Q (the discharge temperature difference is constant at ΔT), and considering the influence of buoyancy, the vertical reach is 0.5L or less.

これに対して、上記した本発明の実施の形態に係る床吹出し空調設備の制御システムによれば、冷房熱負荷が最大熱負荷の半分になった場合、図５の（３）に示すように、冷房用空気の吹出し風量０．５Ｑを１／３乗して０．７９Ｑとすると共に、吹出し温度差を０．６３ΔＴとすることにより、垂直方向の到達距離を冷房時の最大熱負荷時の高さＬに維持しながら、冷房能力を冷房最大熱負荷時の半分（０．７９×０．６３＝０．５）とすることができる。   On the other hand, according to the control system for floor blowing air conditioning equipment according to the above-described embodiment of the present invention, when the cooling heat load becomes half of the maximum heat load, as shown in FIG. The cooling air blown air volume 0.5Q is raised to 1/3 to 0.79Q, and the blowout temperature difference is set to 0.63ΔT, so that the vertical reach is the maximum heat load during cooling. While maintaining the height L, the cooling capacity can be reduced to half of the maximum cooling heat load (0.79 × 0.63 = 0.5).

したがって、冷房の部分負荷時であっても、床吹出し口９からの吹出し風量が減じられることにより吹出し気流の到達距離が短くなり、在席者の足元が寒く、頭部が暑いといったように、室内の上下方向の温度分布にムラが生じることはない。また、上記した本発明の実施の形態に係る床吹出し空調設備の制御システムでは、室内の冷房負荷の変化に応じて床吹出し口の開度や個数を調整しておらず、制御範囲内においてすべての床吹出し口９から常に同一風量の冷房用空気が吹出されるため、室内の水平方向の温度分布にもムラが生じ難い。したがって、室内の居住域を均一な温度分布に保つことができ、室内の快適性の向上を図ることができる。   Therefore, even at the time of partial load of cooling, the reach of the blown airflow is shortened by reducing the amount of blown air from the floor outlet 9, so that the feet of the occupants are cold and the head is hot, There is no unevenness in the indoor temperature distribution in the vertical direction. Further, in the control system for the floor outlet air conditioning equipment according to the embodiment of the present invention described above, the opening degree and number of the floor outlets are not adjusted according to the change in the indoor cooling load, and all within the control range. Since air for cooling with the same air volume is always blown out from the floor outlet 9 of the room, unevenness in the temperature distribution in the horizontal direction in the room hardly occurs. Therefore, the indoor living area can be maintained in a uniform temperature distribution, and the indoor comfort can be improved.

さらに、上記した本発明の実施の形態に係る床吹出し空調設備の制御システムでは、室内と床下との差圧を利用して風量を制御しておらず、差圧を計測する必要がないため、システムの簡素化を図ることができる。   Furthermore, in the control system of the above-described floor blowing air conditioning equipment according to the embodiment of the present invention, the air volume is not controlled using the differential pressure between the room and the floor, and it is not necessary to measure the differential pressure. The system can be simplified.

なお、上記した実施の形態では、ステップ４において、前記冷房用空気の垂直方向の到達距離を１．８ｍとするため、風量の操作量ΔＱ’を算出する際に熱量の増減量Δｑを１／３乗しているが、本発明はこの場合に限定されるものではない。すなわち、例えば、前記冷房用空気の垂直方向の到達距離を、事務作業時（すなわち、着席時）の執務空間の高さである１．１ｍとするように制御することもでき、この場合、前記風量の操作量ΔＱ’は、前記熱量の増減量Δｑを１／２乗した値に前記風量Ｑを乗じることにより算出される。したがって、前記冷房用空気の吹出し風量の操作量ΔＱ’を算出する際には、熱量の増減量Δｑに対して１／２乗〜１／３乗した値を使用することができる。 In the above-described embodiment, in step 4, since the reach distance of the cooling air in the vertical direction is 1.8 m, when calculating the air flow manipulated variable ΔQ ′, the heat amount increase / decrease amount Δq is set to 1 / Although it is raised to the third power, the present invention is not limited to this case. That is, for example, the vertical reach distance of the cooling air can be controlled to be 1.1 m which is the height of the office space at the time of office work (that is, when seated). The air flow manipulated variable ΔQ ′ is calculated by multiplying the air flow Q by a value obtained by multiplying the heat increase / decrease amount Δq by a factor of 1/2. Therefore, when calculating the manipulated variable ΔQ ′ of the air flow for cooling air, a value obtained by multiplying the power increase / decrease amount Δq by 1/2 power to 1/3 power can be used.

また、上記した本発明の実施の形態は、本発明の床吹出し空調設備の制御システムにおける好適な具体例であり、技術的に好ましい種々の限定を付している場合もあるが、本発明の技術範囲は、特に本発明を限定する記載がない限り、これらの態様に限定されるものではない。また、上記した本発明の実施の形態における構成要素は適宜、他の構成要素などとの置き換えが可能であり、かつ、他の構成要素との組合せを含む様々な変形が可能であり、本発明は、上記した実施の形態の記載をもって特許請求の範囲に記載された発明の内容を限定するものではない。   Moreover, the above-described embodiment of the present invention is a preferred specific example in the control system for the floor blowing air-conditioning equipment of the present invention, and may have various technically preferred limitations. The technical scope is not limited to these embodiments unless specifically described to limit the present invention. In addition, the constituent elements in the embodiments of the present invention described above can be appropriately replaced with other constituent elements and various modifications including combinations with other constituent elements are possible. Is not intended to limit the content of the invention described in the claims by the description of the above-described embodiment.

１４ 演算部（仮温度操作量算出手段、熱量増減量算出手段、吹出し風量操作量算出手段、制御風量算出手段、実吹出し温度操作量算出手段、制御温度算出手段）
１５ 制御部（制御手段） 14 Calculation unit (temporary temperature manipulated variable calculating means, heat amount increase / decrease calculating means, blown air flow manipulated variable calculating means, control air flow calculating means, actual blown temperature manipulated variable calculating means, control temperature calculating means)
15 Control unit (control means)

Claims (5)

空調機から床下の空間に供給した冷房用空気を床吹出し口から室内に吹き出して冷房を行う床吹出し空調設備の制御システムであって、
前記冷房用空気の仮の設定温度と検出温度との差から仮の温度操作量を算出する仮温度操作量算出手段と、
該仮温度操作量算出手段が算出した仮の温度操作量から熱量の増減量を算出する熱量増減量算出手段と、
該熱量増減量算出手段が算出した熱量の増減量から前記冷房用空気の吹出し風量の操作量を算出する吹出し風量操作量算出手段と、
該吹出し風量操作量算出手段が算出した前記冷房用空気の吹出し風量の操作量に前記冷房用空気の仮の設定風量を加えて制御風量を算出する制御風量算出手段と、
前記吹出し風量操作量算出手段が算出した吹出し風量の操作量と前記熱量増減量算出手段が算出した熱量の増減量から前記冷房用空気の吹出し温度の実際の操作量を算出する実吹出し温度操作量算出手段と、
該温度操作量算出手段が算出した前記冷房用空気の吹出し温度の実際の操作量に前記冷房用空気の仮の設定温度を加えて制御温度を算出する制御温度算出手段と、
前記制御風量算出手段が算出した制御風量及び前記制御温度算出手段が算出した制御温度に基づき、前記冷房用空気の吹出し風量及び吹出し温度をそれぞれ制御する制御手段と、
を備えていることを特徴とする床吹出し空調設備の制御システム。 A control system for a floor air-conditioning system that performs cooling by blowing air for cooling supplied from an air conditioner into the space under the floor from the floor outlet to the room,
A provisional temperature manipulated variable calculating means for calculating a provisional temperature manipulated variable from the difference between the provisional set temperature of the cooling air and the detected temperature;
A heat amount increase / decrease amount calculation means for calculating a heat amount increase / decrease amount from the temporary temperature operation amount calculated by the temporary temperature operation amount calculation means;
A blown air volume manipulated variable calculating means for calculating an manipulated variable of the blown air volume of the cooling air from the increased or decreased amount of heat calculated by the heat quantity increased or decreased amount calculating means;
Control air volume calculation means for calculating a control air volume by adding a provisional set air volume of the cooling air to the operation amount of the air flow of the cooling air calculated by the blowing air volume operation amount calculating means;
The actual air flow temperature manipulated variable that calculates the actual manipulated value of the cooling air blow temperature from the manipulated value of the blown air flow calculated by the blown air flow manipulated variable calculating means and the amount of heat increase / decrease calculated by the heat quantity increase / decrease calculating means. A calculation means;
Control temperature calculation means for calculating a control temperature by adding a temporary set temperature of the cooling air to the actual operation amount of the cooling air blowing temperature calculated by the temperature operation amount calculation means;
Control means for controlling the blowing air volume and the blowing temperature of the cooling air based on the control air volume calculated by the control air volume calculating means and the control temperature calculated by the control temperature calculating means;
A control system for a floor-blowing air conditioning system. 前記吹出し風量操作量算出手段は、前記熱量増減量算出手段が算出した熱量の増減量に対して１／２乗〜１／３乗した値を前記冷房用空気の吹出し風量の操作量とする請求項１に記載の床吹出し空調設備の制御システム。   The blown air volume manipulated variable calculating means sets a value obtained by multiplying the power increase / decrease amount calculated by the heat quantity increase / decrease calculating means to the power of 1/2 to 1/3 as the manipulated variable of the blown air volume of the cooling air. Item 2. A control system for floor blowing air conditioning equipment according to Item 1. 空調機から床下の空間に供給した冷房用空気を床吹出し口から室内に吹き出して冷房を行う床吹出し空調設備の制御方法であって、
前記冷房用空気の仮の設定温度と検出温度との差から仮の温度操作量を算出する仮温度操作量算出ステップと、
該仮温度操作量算出ステップで算出した仮の温度操作量から熱量の増減量を算出する熱量増減量算出ステップと、
該熱量増減量算出ステップで算出した熱量の増減量から前記冷房用空気の吹出し風量の操作量を算出する吹出し風量操作量算出ステップと、
該吹出し風量操作量算出ステップで算出した前記冷房用空気の吹出し風量の操作量に前記冷房用空気の仮の設定風量を加えて制御風量を算出する制御風量算出ステップと、
前記吹出し風量操作量算出数轍鮒で算出した吹出し風量の操作量と前記熱量増減量算出ステップで算出した熱量の増減量から前記冷房用空気の吹出し温度の実際の操作量を算出する実吹出し温度操作量算出ステップと、
該温度操作量算出ステップで算出した前記冷房用空気の吹出し温度の実際の操作量に前記冷房用空気の仮の設定温度を加えて制御温度を算出する制御温度算出ステップと、
前記制御風量算出ステップで算出した制御風量及び前記制御温度算出ステップで算出した制御温度に基づき、前記冷房用空気の吹出し風量及び吹出し温度をそれぞれ制御する制御ステップと、
を含むことを特徴とする床吹出し空調設備の制御方法。 A control method for a floor air-conditioning system that performs cooling by blowing air for cooling supplied from an air conditioner into a space under the floor from a floor outlet to a room,
A provisional temperature operation amount calculation step of calculating a provisional temperature operation amount from a difference between the provisional set temperature of the cooling air and the detected temperature;
A heat amount increase / decrease amount calculation step for calculating a heat amount increase / decrease amount from the temporary temperature operation amount calculated in the temporary temperature operation amount calculation step;
A blown air volume manipulated variable calculating step for calculating an manipulated variable of the blown air volume of the cooling air from the increased or decreased amount of heat calculated in the calorific value increase / decrease amount calculating step;
A control air volume calculation step of calculating a control air volume by adding a provisional set air volume of the cooling air to the operation amount of the air flow of the cooling air calculated in the operation amount calculation step of the air flow;
The actual blowout temperature for calculating the actual manipulated variable of the cooling air blown temperature from the manipulated variable of the blown air quantity calculated in the blown air quantity manipulated variable calculation number and the calorific value increase / decrease amount calculated in the calorific value increase / decrease calculation step. An operation amount calculating step;
A control temperature calculation step of calculating a control temperature by adding a provisional set temperature of the cooling air to the actual operation amount of the cooling air blowing temperature calculated in the temperature operation amount calculation step;
A control step of controlling the blowing air volume and the blowing temperature of the cooling air based on the control air volume calculated in the control air volume calculating step and the control temperature calculated in the control temperature calculating step;
A control method for a floor blowing air conditioning system comprising: 前記吹出し風量操作量算出ステップは、前記熱量増減量算出ステップで算出した熱量の増減量に対して１／２乗〜１／３乗した値を前記冷房用空気の吹出し風量の操作量とする請求項３に記載の床吹出し空調設備の制御方法。   The blown air flow manipulated variable calculation step uses a value obtained by multiplying the heat increase / decrease amount calculated in the heat amount increase / decrease calculation step by a power of 1/2 to 1/3 as an operation amount of the blown air flow of the cooling air. Item 4. A method for controlling a floor blowing air conditioning facility according to Item 3. 請求項３又は４に記載の床吹出し空調設備の制御方法の各ステップをコンピュータに実行させることを特徴とする床吹出し空調設備の制御プログラム。
A control program for a floor blowing air-conditioning facility, which causes a computer to execute each step of the method for controlling a floor blowing air-conditioning facility according to claim 3 or 4.
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JP2015068585A (en) * 2013-09-30 2015-04-13 パナホーム株式会社 Air conditioning system of building
JP2017156009A (en) * 2016-03-01 2017-09-07 三機工業株式会社 Local cooling device
JPWO2021024421A1 (en) * 2019-08-07 2021-12-16 三菱電機株式会社 Air conditioner

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JP2005265280A (en) * 2004-03-18 2005-09-29 Takasago Thermal Eng Co Ltd Air-conditioning method of floor blowout type
JP2010060158A (en) * 2008-09-01 2010-03-18 Nisshin Toa Inc Air distribution device

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JP2005265280A (en) * 2004-03-18 2005-09-29 Takasago Thermal Eng Co Ltd Air-conditioning method of floor blowout type
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Publication number Priority date Publication date Assignee Title
JP2015068585A (en) * 2013-09-30 2015-04-13 パナホーム株式会社 Air conditioning system of building
JP2017156009A (en) * 2016-03-01 2017-09-07 三機工業株式会社 Local cooling device
JPWO2021024421A1 (en) * 2019-08-07 2021-12-16 三菱電機株式会社 Air conditioner
JP7209846B2 (en) 2019-08-07 2023-01-20 三菱電機株式会社 air conditioner

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