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JP7564702B2 - Air Conditioning System - Google Patents
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JP7564702B2 - Air Conditioning System - Google Patents

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JP7564702B2
JP7564702B2 JP2020209042A JP2020209042A JP7564702B2 JP 7564702 B2 JP7564702 B2 JP 7564702B2 JP 2020209042 A JP2020209042 A JP 2020209042A JP 2020209042 A JP2020209042 A JP 2020209042A JP 7564702 B2 JP7564702 B2 JP 7564702B2
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雄太 正木
佑輔 小林
光生 山形
渓吾 竹原
瀟然 仝
隆司 篠島
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Takenaka Corp
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Description

本発明は、外気処理する複数の外調機と、その外調機から空調対象空間への外気処理後の空気の風量を目標風量に制御する風量制御装置とが備えられた空調システムに関する。 The present invention relates to an air conditioning system including a plurality of outdoor air conditioning units that treat outdoor air, and an air volume control device that controls the volume of treated air from the outdoor air conditioning units to a space to be air conditioned to a target air volume.

空調システムとして、外気処理する外調機と、その外調機から空調対象空間への外気処理後の空気の風量を制御する風量制御装置とが備えられているものが知られている（例えば、特許文献１参照）。 There is known an air conditioning system that includes an outdoor air conditioning unit that processes outdoor air and an air volume control device that controls the volume of air that is blown from the outdoor air conditioning unit into the space to be air-conditioned after the processing (see, for example, Patent Document 1).

このような空調システムでは、複数の空調対象空間の夫々に風量制御装置が備えられているのに対して、外調機が、風量制御装置よりも少ない数量備えられている。よって、外調機と風量制御装置との間の距離の違い等により、複数の風量制御装置の間での圧損の違いが生じることになる。そのため、この圧損の違いを考慮することなく、外調機を運転させると、圧損が大きな状態で外調機を運転させてしまい、消費エネルギーの増大を招いてしまう。 In this type of air conditioning system, an air volume control device is provided in each of the multiple air conditioned spaces, but there are fewer outdoor air conditioning units than there are air volume control devices. Therefore, differences in the distance between the outdoor air conditioning units and the air volume control devices, etc., will result in differences in pressure loss between the multiple air volume control devices. For this reason, if the outdoor air conditioning units are operated without taking this difference in pressure loss into consideration, they will be operated in a state where the pressure loss is large, resulting in increased energy consumption.

特許文献１に記載のシステムでは、全ての外調機にて外気処理された空気が導入されるエアーウォールが備えられ、複数の風量制御装置の夫々が、エアーウォールから必要量だけの空気を空調対象空間に供給している。このように、外調機と風量制御装置との間にエアーウォールを備えることで、エアーウォールと風量制御装置との間で圧損の違いが生じるのを抑制することができる。 In the system described in Patent Document 1, an air wall is provided into which air that has been treated by all outdoor air conditioning units is introduced, and each of the multiple air volume control devices supplies only the required amount of air from the air wall to the space to be air-conditioned. In this way, by providing an air wall between the outdoor air conditioning units and the air volume control devices, it is possible to suppress differences in pressure loss between the air wall and the air volume control devices.

特開２００３－３０２０８６号公報JP 2003-302086 A

しかしながら、特許文献１に記載のシステムでは、外気処理された空気を外調機からエアーウォールに供給する場合にも、外調機とエアーウォールとの間の距離の違い等によって、複数の外調機の間で圧損に違いが生じることになる。よって、単に、エアーウォールの空気圧力の変化状態に応じて、外調機の風量制御や台数制御を行うだけでは、外調機の圧損の違いが考慮されておらず、依然として、圧損が大きな状態で外調機を運転させてしまう可能性があった。 However, in the system described in Patent Document 1, even when outdoor air-processed air is supplied from the outdoor air-conditioning units to the air wall, differences in pressure loss occur between multiple outdoor air-conditioning units due to differences in the distance between the outdoor air-conditioning units and the air wall, etc. Therefore, simply controlling the air volume and number of outdoor air-conditioning units according to the changing state of the air pressure in the air wall does not take into account differences in pressure loss between the outdoor air-conditioning units, and there is still a possibility that the outdoor air-conditioning units will be operated in a state where pressure loss is large.

この実情に鑑み、本発明の主たる課題は、圧損が大きな状態で外調機を運転させることを抑制して、省エネルギー化を図ることができる空調システムを提供する点にある。 In view of this situation, the main objective of the present invention is to provide an air conditioning system that can reduce energy consumption by preventing the outdoor air conditioner from operating under conditions of high pressure loss.

本発明の第１特徴構成は、外気処理する複数の外調機と、
その外調機から空調対象空間への外気処理後の空気の風量を目標風量に制御する風量制御装置と、
複数の前記外調機の出力制御を行う外調機制御部とが備えられ、
前記風量制御装置は、複数の空調対象空間の夫々に対して備えられ、
前記外調機は、前記風量制御装置よりも少ない数量備えられ、
前記風量制御装置は、前記空調対象空間への外気処理後の空気の風量を、前記空調対象空間の夫々に対する一定の目標風量に調整する定風量制御装置であり、
前記外調機制御部は、前記空調対象空間の夫々に対する前記一定の目標風量と前記風量制御装置の吹出口での風量である制御風量との差を前記空調対象空間の夫々において求めて、求めた前記空調対象空間の夫々に対する前記一定の目標風量と前記制御風量との差のバラツキ度合いが設定範囲内に収まるように、複数の外調機の出力制御を行うように構成されている点にある。 A first characteristic configuration of the present invention is a system including a plurality of outdoor air conditioners for treating outdoor air;
an air volume control device that controls the volume of air after outdoor air processing from the outdoor air conditioning unit to the space to be air-conditioned to a target air volume;
An outdoor air conditioner control unit that controls the output of the outdoor air conditioners,
The air volume control device is provided for each of a plurality of air conditioned spaces,
The outdoor air conditioners are provided in a smaller number than the air volume control devices,
The air volume control device is a constant air volume control device that adjusts the air volume of the air after outside air processing into the air conditioned space to a constant target air volume for each of the air conditioned spaces,
The outdoor air-conditioning unit control unit is configured to calculate the difference between the constant target air volume for each of the air-conditioned spaces and the controlled air volume, which is the air volume at the air outlet of the air volume control device, for each of the air-conditioned spaces, and to control the output of multiple outdoor air-conditioning units so that the degree of variation in the difference between the constant target air volume and the controlled air volume for each of the air-conditioned spaces falls within a set range.

本構成によれば、複数の外調機の出力制御を行うのに当たり、外調機制御部が、各空調対象空間における一定の目標風量に対して各風量制御装置にて制御した制御風量（前記風量制御装置の吹出口での風量）との差のバラツキ度合いが設定範囲内に収まるように、複数の外調機の出力制御を行っている。複数の風量制御装置の間での圧損の違いが大きくなると、風量のバラツキ度合いも大きくなるので、複数の外調機の出力制御を行うのに当たり、風量制御装置にて制御した制御風量のバラツキ度合いを考慮することで、圧損の違いの大きさを考慮することができる。これにより、外調機制御部が、空調対象空間の夫々に対する一定の目標風量と前述した制御風量との差のバラツキ度合いが設定範囲内に収まるように、複数の外調機の出力制御を行うことで、圧損が大きな状態で外調機を運転させるのを抑制することができるので、消費エネルギーの低減を図り、省エネルギー化を図ることができる。 According to this configuration, when controlling the output of the multiple outdoor air conditioners, the outdoor air conditioner control unit controls the output of the multiple outdoor air conditioners so that the degree of variation in the difference between the controlled air volume (air volume at the air outlet of the air volume control device) controlled by each air volume control device and a certain target air volume in each air conditioned space falls within a set range. If the difference in pressure loss between the multiple air volume control devices becomes large, the degree of variation in the air volume also increases, so when controlling the output of the multiple outdoor air conditioners, the degree of variation in the controlled air volume controlled by the air volume control device can be taken into consideration to take into account the magnitude of the difference in pressure loss. As a result, the outdoor air conditioner control unit controls the output of the multiple outdoor air conditioners so that the degree of variation in the difference between the certain target air volume for each air conditioned space and the above-mentioned controlled air volume falls within a set range, thereby suppressing the outdoor air conditioners from operating in a state with a large pressure loss, thereby reducing energy consumption and achieving energy conservation.

本発明の第２特徴構成は、前記外調機制御部は、出力制御として、前記外調機の風量を決定してその決定した風量になるように外調機の出力を制御する風量制御を行い、
前記外調機制御部は、その風量制御において、実際に外調機の風量を変更した状態で、前記空調対象空間の夫々に対する前記一定の目標風量と前記制御風量との差のバラツキ度合いが設定範囲内にあるか否かの風量判定処理を行い、その風量判定処理の判定結果に応じて外調機の風量を決定している点にある。 In a second characteristic configuration of the present invention, the outdoor air-conditioning unit control unit performs, as output control, air volume control for determining an air volume of the outdoor air-conditioning unit and controlling the output of the outdoor air-conditioning unit so that the determined air volume is achieved;
In its air volume control, the outdoor air-conditioning unit control unit performs an air volume determination process to determine whether the degree of variation in the difference between the constant target air volume and the controlled air volume for each of the air-conditioned spaces is within a set range while actually changing the air volume of the outdoor air-conditioning unit , and determines the air volume of the outdoor air-conditioning unit depending on the result of the air volume determination process.

本構成によれば、外調機制御部は、実際に外調機の風量を変更した状態での風量判定処理の判定結果に応じて外調機の風量を決定しているので、実際に外調機の風量を変更した状態で、空調対象空間の夫々に対する一定の目標風量と前述した制御風量との差のバラツキ度合いが設定範囲内にあるか否かを確認しながら、外調機の風量を適切に決定することができる。よって、圧損が大きな状態で外調機を運転させるのを抑制しながら、外調機の風量を適切に変更することができる。 According to this configuration, the outdoor air-conditioning unit control unit determines the air volume of the outdoor air-conditioning unit according to the judgment result of the air volume judgment process in a state where the air volume of the outdoor air-conditioning unit is actually changed, so that the air volume of the outdoor air-conditioning unit can be appropriately determined while checking whether the degree of variation of the difference between the constant target air volume for each air-conditioned space and the above-mentioned controlled air volume is within a set range in a state where the air volume of the outdoor air-conditioning unit is actually changed. Therefore, the air volume of the outdoor air-conditioning unit can be appropriately changed while suppressing the operation of the outdoor air-conditioning unit in a state where the pressure loss is large.

本発明の第３特徴構成は、前記外調機制御部は、出力制御として、運転停止又は運転開始させる前記外調機を決定してその決定した外調機を運転停止又は運転開始させるように外調機の出力を制御する台数制御を行い、
前記外調機制御部は、その台数制御において、実際に外調機を運転停止又は運転開始させた状態で、前記空調対象空間の夫々に対する前記一定の目標風量と前記制御風量との差のバラツキ度合いが設定範囲内にあるか否かの台数判定処理を行い、その台数判定処理の判定結果に応じて運転停止又は運転開始させる外調機を決定している点にある。 The third characteristic configuration of the present invention is that the outdoor air-conditioning unit control unit performs, as output control, a number control for determining which outdoor air-conditioning units are to be stopped or started, and controlling the output of the outdoor air-conditioning units so as to stop or start the operation of the determined outdoor air-conditioning units;
In its number control, the outdoor air-conditioning unit control unit performs a number determination process to determine whether the degree of variation in the difference between the constant target air volume and the controlled air volume for each of the air-conditioned spaces is within a set range while the outdoor air-conditioning units are actually stopped or started, and determines which outdoor air-conditioning units to stop or start operating depending on the results of the number determination process.

本構成によれば、外調機制御部は、実際に外調機を運転停止又は運転開始させた状態での台数判定処理の判定結果に応じて運転停止又は運転開始させる外調機を決定しているので、実際に外調機を運転停止又は運転開始させた状態で、空調対象空間の夫々に対する一定の目標風量と前述した制御風量との差のバラツキ度合いが設定範囲内にあるか否かを確認しながら、運転停止又は運転開始させる外調機を適切に決定することができる。よって、圧損が大きな状態で外調機を運転させるのを抑制しながら、外調機の運転台数を適切に変更することができる。 According to this configuration, the outdoor air-conditioning unit control unit determines which outdoor air-conditioning units to stop or start operating according to the determination result of the number determination process when the outdoor air-conditioning units are actually stopped or started, so that it is possible to appropriately determine which outdoor air-conditioning units to stop or start operating while checking whether the degree of variation in the difference between the constant target airflow and the above-mentioned controlled airflow for each of the air-conditioned spaces is within a set range when the outdoor air-conditioning units are actually stopped or started. Therefore, it is possible to appropriately change the number of operating outdoor air-conditioning units while preventing the outdoor air-conditioning units from operating in a state where pressure loss is large.

本発明の第４特徴構成は、前記外調機制御部は、前記台数判定処理において、いずれの前記外調機を運転停止又は運転開始させても、前記空調対象空間の夫々に対する前記一定の目標風量と前記制御風量との差のバラツキ度合いが設定範囲内にない場合には、前記空調対象空間の夫々に対する前記一定の目標風量と前記制御風量との差のバラツキ度合いが最小となる外調機を、運転停止又は運転開始させる外調機として決定する点にある。 The fourth characteristic configuration of the present invention is that in the number determination process, if the degree of variation in the difference between the constant target air volume and the control air volume for each of the air conditioned spaces is not within a set range regardless of which of the outdoor air conditioning units is stopped or started, the outdoor air conditioning unit control unit determines the outdoor air conditioning unit that has the smallest degree of variation in the difference between the constant target air volume and the control air volume for each of the air conditioned spaces as the outdoor air conditioning unit to be stopped or started.

本構成によれば、外調機制御部は、いずれの外調機を運転停止又は運転開始させても、空調対象空間の夫々に対する一定の目標風量と前述した制御風量との差のバラツキ度合いが設定範囲内にない場合には、空調対象空間の夫々に対する一定の目標風量と前述した制御風量との差のバラツキ度合いが最小となる外調機を、運転停止又は運転開始させる外調機として決定しているので、圧損が大きな状態で外調機を運転させるのを極力抑制しながら、外調機の運転台数を変更することができる。
 According to this configuration, when the degree of variation in the difference between the constant target air volume for each of the air conditioned spaces and the above-mentioned control air volume is not within the set range regardless of which outdoor air conditioning unit is stopped or started, the outdoor air conditioning unit control unit determines the outdoor air conditioning unit that has the smallest degree of variation in the difference between the constant target air volume for each of the air conditioned spaces and the above-mentioned control air volume as the outdoor air conditioning unit to be stopped or started.Therefore, it is possible to change the number of outdoor air conditioning units in operation while minimizing the need to operate outdoor air conditioning units in conditions of large pressure loss.

空調システムの概略構成を示す図Diagram showing the schematic configuration of an air conditioning system 台数制御での外調機の運転台数を示す図A diagram showing the number of outdoor air conditioners in operation under unit control 台数判定処理を示すフローチャートFlowchart showing the number determination process 風量判定処理を示すフローチャートFlowchart showing air volume determination processing

本発明に係る空調システムの実施形態について図面に基づいて説明する。
この空調システム１は、図１に示すように、複数の階層を有する建物２に適用されており、外気処理する外調機３と、その外調機３から空調対象空間５への外気処理後の空気の風量を目標風量に制御する風量制御装置４とが備えられている。 DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an air conditioning system according to the present invention will be described with reference to the drawings.
As shown in Figure 1, this air conditioning system 1 is applied to a building 2 having multiple floors, and is equipped with an outdoor air conditioning unit 3 that processes outside air, and an air volume control device 4 that controls the volume of air from the outdoor air conditioning unit 3 to a space 5 to be air conditioned after the processing, to a target air volume.

外調機３及び風量制御装置４は、ともに複数備えられているが、外調機３は、建物２の最上階、中間階、最下階の夫々に対応して備えられているのに対して、風量制御装置４は、複数階層の全ての階において、複数備えられている。風量制御装置４は、建物２における複数の空調対象空間５の夫々に対して備えられ、外調機３は、風量制御装置４よりも少ない数量備えられている。 There are multiple outdoor air-conditioning units 3 and multiple air volume control devices 4, but while outdoor air-conditioning units 3 are provided corresponding to the top, middle, and bottom floors of building 2, multiple air volume control devices 4 are provided on all floors of the building. An air volume control device 4 is provided for each of the multiple air-conditioned spaces 5 in building 2, and there are fewer outdoor air-conditioning units 3 than there are air volume control devices 4.

外調機３は、供給される熱媒体を用いて、建物２外から吸引した外気を所定温度や所定湿度に調整する外気処理を行い、その外気処理した外気を供給可能に構成されている。外調機３は、外気処理の対象を外気のみとするだけでなく、例えば、外気と空調対象空間５からの還気との混合気を外気処理の対象とすることもできる。 The outdoor air conditioning unit 3 is configured to use the supplied heat medium to perform outdoor air processing, adjusting the outdoor air drawn in from outside the building 2 to a predetermined temperature and humidity, and to supply the processed outdoor air. The outdoor air conditioning unit 3 is not limited to processing outdoor air only; it can also process a mixture of outdoor air and return air from the conditioned space 5, for example.

外調機３は、外気処理した空気（外気のみ又は外気と還気との混合気）を、供給ダクト６を通して空調対象空間５に供給している。供給ダクト６は、建物２の最上階、中間階、最下階の夫々に配設された外調機３に接続された上流側部位６ａと、建物２の上下方向の全長に亘る中間部位６ｂと、各階の空調対象空間５に接続された下流側部位６ｃとを有している。これにより、供給ダクト６は、外調機３からの外気処理後の空気を、上流側部位６ａから中間部位６ｂを経由する状態で下流側部位６ｃに供給して、各階の空調対象空間５の夫々に対して供給可能としている。供給ダクト６の上流側部位６ａの夫々には、外調機３からの外気の供給量を調整自在な供給量調整弁７が備えられている。 The outdoor air conditioner 3 supplies the air that has been treated (outdoor air only or a mixture of outdoor air and return air) to the space to be air-conditioned 5 through the supply duct 6. The supply duct 6 has an upstream section 6a connected to the outdoor air conditioners 3 arranged on the top, middle, and bottom floors of the building 2, an intermediate section 6b that spans the entire vertical length of the building 2, and a downstream section 6c connected to the space to be air-conditioned 5 on each floor. As a result, the supply duct 6 supplies the air that has been treated from the outdoor air conditioner 3 from the upstream section 6a through the intermediate section 6b to the downstream section 6c, making it possible to supply the air to each of the spaces to be air-conditioned 5 on each floor. Each upstream section 6a of the supply duct 6 is provided with a supply amount adjustment valve 7 that can freely adjust the amount of outdoor air supplied from the outdoor air conditioner 3.

風量制御装置４は、空調対象空間５への外気処理後の空気の風量を所定の一定風量に調整する定風量制御装置として備えられている。風量制御装置４は、各階の空調対象空間５の夫々に接続された供給ダクト６の下流側部位６ｃに備えられ、複数の空調対象空間５の夫々に対して所定の一定風量の空気を供給している。 The air volume control device 4 is provided as a constant air volume control device that adjusts the volume of the air after outside air processing into the air-conditioned space 5 to a predetermined constant air volume. The air volume control device 4 is provided in the downstream portion 6c of the supply duct 6 connected to each of the air-conditioned spaces 5 on each floor, and supplies a predetermined constant air volume to each of the multiple air-conditioned spaces 5.

この空調システム１では、全ての空調対象空間５における空調負荷（外気空調負荷）の大きさに応じて、複数の外調機３の出力制御を行う外調機制御部８が備えられている。空調対象空間５における空調負荷（外気空調負荷）については、外調機制御部８が、空調対象空間５にて外気空調運転が要求されているか否かの運転指令情報、空調対象空間５の温度情報や湿度情報等の各種の情報に基づいて、空調対象空間５における空調負荷を取得している。 This air conditioning system 1 is provided with an outdoor air conditioning unit control unit 8 that controls the output of multiple outdoor air conditioning units 3 according to the magnitude of the air conditioning load (outdoor air conditioning load) in all air conditioned spaces 5. With regard to the air conditioning load (outdoor air conditioning load) in the air conditioned spaces 5, the outdoor air conditioning unit control unit 8 acquires the air conditioning load in the air conditioned spaces 5 based on various information such as operation command information indicating whether outdoor air conditioning operation is requested in the air conditioned spaces 5, and temperature information and humidity information of the air conditioned spaces 5.

外調機制御部８は、複数の外調機３の出力制御として、運転停止又は運転開始させる外調機３を決定してその決定した外調機３を運転停止又は運転開始させるように外調機３の出力を制御する台数制御と、外調機３の風量を決定してその決定した風量になるように外調機３の出力を制御する風量制御とを行う。 The outdoor air-conditioning unit control unit 8 performs output control of a plurality of outdoor air-conditioning units 3 by determining which outdoor air-conditioning units 3 to stop or start operating and controlling the output of the outdoor air-conditioning units 3 to stop or start operating the determined outdoor air-conditioning units 3, and by performing air volume control by determining the air volume of the outdoor air-conditioning units 3 and controlling the output of the outdoor air-conditioning units 3 to achieve the determined air volume.

外調機制御部８は、台数制御を行うことで、全ての空調対象空間５における空調負荷（外気空調負荷）の大きさに応じて、外調機３の運転台数を決定してその決定した運転台数の外調機３を運転させている。そして、外調機制御部８は、風量制御を行うことで、全ての空調対象空間５における空調負荷（外気空調負荷）の大きさに応じて、運転させている各外調機３の風量を決定してその決定した風量になるように各外調機３の出力を制御している。 The outdoor air conditioning unit control unit 8 performs unit count control to determine the number of outdoor air conditioning units 3 in operation according to the magnitude of the air conditioning load (outdoor air conditioning load) in all air conditioned spaces 5, and operates the determined number of outdoor air conditioning units 3 in operation. The outdoor air conditioning unit control unit 8 then performs air volume control to determine the air volume of each outdoor air conditioning unit 3 in operation according to the magnitude of the air conditioning load (outdoor air conditioning load) in all air conditioned spaces 5, and controls the output of each outdoor air conditioning unit 3 to achieve the determined air volume.

台数制御では、全ての空調対象空間５における空調負荷（外気空調負荷）の大きさが大きいほど、運転台数を多くするように決定しており、風量制御においても、全ての空調対象空間５における空調負荷（外気空調負荷）の大きさが大きいほど、外調機３の風量が大きくなるように決定している。 In the case of unit number control, the greater the air conditioning load (outdoor air conditioning load) in all air conditioned spaces 5, the greater the number of operating units is determined, and in the case of air volume control, the greater the air volume of the outdoor air conditioning units 3 is determined, as the greater the air conditioning load (outdoor air conditioning load) in all air conditioned spaces 5.

ただし、外調機３をインバータ制御する場合には、外調機３の運転台数を減らすよりも１台当たりの外調機３の風量を減少させる方が省エネに効果的であるので、なるべく多くの台数にて外調機３を運転させるようにしている。そこで、外調機３の１台あたりで絞ることができる風量を設定しており、台数制御では、要求風量が運転状態の外調機３にて絞ることができる風量を下回る場合のみ、外調機制御部８が、運転させる台数を１台減らすようにしている。このようにして、台数制御では、全ての空調対象空間５における空調負荷（外気空調負荷）を賄うための要求風量がシステム全体の最大風量に対してどのような範囲になるのかによって、外調機制御部８が運転台数を決定している。 However, when the outdoor air-conditioning units 3 are inverter-controlled, it is more effective for energy conservation to reduce the air volume of each outdoor air-conditioning unit 3 than to reduce the number of outdoor air-conditioning units 3 in operation, so as many outdoor air-conditioning units 3 as possible are operated. Therefore, the air volume that can be throttled per outdoor air-conditioning unit 3 is set, and in unit number control, the outdoor air-conditioning unit control unit 8 reduces the number of operating units by one only when the required air volume falls below the air volume that can be throttled by the outdoor air-conditioning unit 3 in operation. In this way, in unit number control, the outdoor air-conditioning unit control unit 8 determines the number of operating units depending on the range of the required air volume to cover the air-conditioning load (outdoor air-conditioning load) in all air-conditioned spaces 5 relative to the maximum air volume of the entire system.

例えば、上述の如く、３台の外調機３を備える場合には、図２に示すように、全ての空調対象空間５における空調負荷を賄うための要求風量がシステム全体の最大風量の３３％～１００％の第１設定範囲である場合には、外調機制御部８が運転台数を３台に決定し、要求風量がシステム全体の最大風量の１１％～３３％の第２設定範囲である場合には、外調機制御部８が運転台数を２台に決定し、要求風量がシステム全体の最大風量の０％～１１％の第３設定範囲である場合には、外調機制御部８が運転台数を１台に決定している。ちなみに、第１～第３設定範囲をどのような範囲に設定するかは適宜変更することができる。 For example, as described above, in the case where three outdoor air-conditioning units 3 are provided, as shown in FIG. 2, if the required air volume to cover the air-conditioning load in all air-conditioned spaces 5 is in a first setting range of 33% to 100% of the maximum air volume of the entire system, the outdoor air-conditioning unit control unit 8 determines the number of operating units to be three, if the required air volume is in a second setting range of 11% to 33% of the maximum air volume of the entire system, the outdoor air-conditioning unit control unit 8 determines the number of operating units to be two, and if the required air volume is in a third setting range of 0% to 11% of the maximum air volume of the entire system, the outdoor air-conditioning unit control unit 8 determines the number of operating units to be one. Incidentally, the ranges to be set as the first to third setting ranges can be changed as appropriate.

台数制御では、運転台数を増減させる場合に、外調機制御部８が、実際に外調機３を運転停止又は運転開始させた状態で、各空調対象空間５における目標風量に対して各風量制御装置４にて制御した制御風量のバラツキ度合いが設定範囲内にあるか否かの台数判定処理を行い、その台数判定処理の判定結果に応じて運転停止又は運転開始させる外調機３を決定している。 In unit count control, when increasing or decreasing the number of operating units, the outdoor air conditioning unit control unit 8 performs a unit count determination process to determine whether the degree of variation in the controlled airflow controlled by each airflow control device 4 relative to the target airflow in each air-conditioned space 5 is within a set range while the outdoor air conditioning units 3 are actually stopped or started, and determines which outdoor air conditioning units 3 to stop or start operating depending on the result of the unit count determination process.

図示は省略するが、風量制御装置４の吹出口等に備えられた風量センサによって風量制御装置４の吹出口等における風量を検出しているので、外調機制御部８は、各風量センサの検出情報に基づいて、各風量制御装置４にて制御した制御風量を取得している。また、空調対象空間５における目標風量は、風量制御装置４にて制御すべき所定の一定風量となっている。これにより、外調機制御部８は、各風量センサの検出情報に基づいて取得した風量制御装置４にて制御した制御風量と空調対象空間５における目標風量とを比較することで、バラツキ度合いが設定範囲内にあるか否かを判定している。 Although not shown in the figure, air volume at the air outlets of the air volume control device 4 is detected by air volume sensors provided at the air outlets of the air volume control device 4, and the outdoor air conditioning unit control unit 8 obtains the controlled air volume controlled by each air volume control device 4 based on the detection information of each air volume sensor. Also, the target air volume in the air conditioned space 5 is a predetermined constant air volume that should be controlled by the air volume control device 4. As a result, the outdoor air conditioning unit control unit 8 determines whether the degree of variation is within a set range by comparing the controlled air volume controlled by the air volume control device 4 obtained based on the detection information of each air volume sensor with the target air volume in the air conditioned space 5.

台数判定処理では、どの外調機３を運転停止又は運転開始させるかを定めた台数変更パターンを複数種予め設定している。そして、外調機制御部８は、ある１つの台数変更パターンに複数の外調機３の運転状態を実際に制御する台数変更処理を行った上で、各風量制御装置４にて制御した制御風量のバラツキ度合いが設定範囲内にあるか否かを判定する台数変更パターン判定処理を行っており、これらの動作を繰り返し行うことで、複数種の台数変更パターンから実際に実行する１つの台数変更パターンを決定している。 In the unit number determination process, multiple unit number change patterns are set in advance, which determine which outdoor air-conditioning units 3 are to be stopped or started. The outdoor air-conditioning unit control unit 8 then performs a unit number change process that actually controls the operating state of multiple outdoor air-conditioning units 3 for one unit number change pattern, and then performs a unit number change pattern determination process that determines whether the degree of variation in the controlled air volumes controlled by each air volume control device 4 is within a set range. By repeating these operations, one unit number change pattern to actually be executed is determined from the multiple unit number change patterns.

台数判定処理について、図３のフローチャートに基づいて説明する。図３は、建物２の最上階、中間階、最下階に備えられた３台の外調機３について、運転台数を３台から２台に減少させる場合を示しており、台数変更パターン１～３の３種類の台数変更パターンを設定している。 The number determination process will be explained based on the flowchart in Figure 3. Figure 3 shows a case where the number of operating outdoor air conditioners 3 installed on the top floor, middle floor, and bottom floor of building 2 is reduced from three to two, and three types of number change patterns, number change patterns 1 to 3, are set.

台数変更パターンについては、最下階の外調機３を第１外調機３ａ、中間階の外調機３を第２外調機３ｂ、最上階の外調機３を第３外調機３ｃとした場合に、台数変更パターン１が、第１外調機３ａを運転停止させ、第２外調機３ｂ及び第３外調機３ｃを運転継続させるパターンに設定されている。台数変更パターン２が、第２外調機３ｂを運転停止させ、第１外調機３ａ及び第３外調機３ｃを運転継続させるパターンに設定され、台数変更パターン３が、第３外調機３ｃを運転停止させ、第１外調機３ａ及び第２外調機３ｂを運転継続させるパターンに設定されている。 As for the number of units change pattern, if the outdoor air conditioner 3 on the bottom floor is the first outdoor air conditioner 3a, the outdoor air conditioner 3 on the middle floor is the second outdoor air conditioner 3b, and the outdoor air conditioner 3 on the top floor is the third outdoor air conditioner 3c, the number of units change pattern 1 is set to a pattern in which the first outdoor air conditioner 3a is stopped and the second outdoor air conditioner 3b and the third outdoor air conditioner 3c continue to operate. The number of units change pattern 2 is set to a pattern in which the second outdoor air conditioner 3b is stopped and the first outdoor air conditioner 3a and the third outdoor air conditioner 3c continue to operate, and the number of units change pattern 3 is set to a pattern in which the third outdoor air conditioner 3c is stopped and the first outdoor air conditioner 3a and the second outdoor air conditioner 3b continue to operate.

図３に示すように、外調機制御部８が、まず、台数変更パターン１にて台数変更処理を行った上で、台数変更パターン判定処理を行い、バラツキ度合いが設定範囲内にあるか否かを判定している（ステップ＃１、ステップ＃２）。バラツキ度合いが設定範囲内にある場合には（ステップ＃２のＹｅｓの場合）、運転台数を減少させるときのパターンを、台数変更パターン１に決定している（ステップ＃３）。 As shown in FIG. 3, the outdoor air conditioning unit control unit 8 first performs a unit number change process using unit number change pattern 1, then performs a unit number change pattern determination process to determine whether the degree of variation is within a set range (steps #1 and #2). If the degree of variation is within the set range (Yes in step #2), the pattern for reducing the number of operating units is determined to be unit number change pattern 1 (step #3).

バラツキ度合いが設定範囲外である場合には（ステップ＃２のＮｏの場合）、台数変更パターン２にて台数変更処理を行った上で、台数変更パターン判定処理を行い、バラツキ度合いが設定範囲内にあるか否かを判定している（ステップ＃４、ステップ＃５）。バラツキ度合いが設定範囲内にある場合には（ステップ＃５のＹｅｓの場合）、運転台数を減少させるときのパターンを、台数変更パターン２に決定している（ステップ＃６）。 If the degree of variation is outside the set range (No in step #2), the number of vehicles is changed using number of vehicles change pattern 2, and then a number of vehicles change pattern determination process is performed to determine whether the degree of variation is within the set range (steps #4 and #5). If the degree of variation is within the set range (Yes in step #5), the pattern for reducing the number of operating vehicles is determined to be number of vehicles change pattern 2 (step #6).

バラツキ度合いが設定範囲外である場合には（ステップ＃５のＮｏの場合）、台数変更パターン３にて台数変更処理を行った上で、台数変更パターン判定処理を行い、バラツキ度合いが設定範囲内にあるか否かを判定している（ステップ＃７、ステップ＃８）。バラツキ度合いが設定範囲内にある場合には（ステップ＃８のＹｅｓの場合）、運転台数を減少させるときのパターンを、台数変更パターン３に決定している（ステップ＃９）。 If the degree of variation is outside the set range (No in step #5), the number of vehicles is changed using number of vehicles change pattern 3, and then a number of vehicles change pattern determination process is performed to determine whether the degree of variation is within the set range (steps #7 and #8). If the degree of variation is within the set range (Yes in step #8), the pattern for reducing the number of operating vehicles is determined to be number of vehicles change pattern 3 (step #9).

バラツキ度合いが設定範囲外である場合には（ステップ＃８のＮｏの場合）、台数変更パターン１～３のいずれのパターンでもバラツキ度合いが設定範囲内になっていないので、運転台数を減少させるときのパターンを、台数変更パターン１～３のうちから、バラツキ度合いが最小となる台数変更パターンに決定している（ステップ＃１０）。 If the degree of variation is outside the set range (No in step #8), the degree of variation is not within the set range for any of number change patterns 1 to 3, so the pattern for reducing the number of operating vehicles is determined to be the number change pattern from number change patterns 1 to 3 that has the smallest degree of variation (step #10).

つまり、外調機制御部８は、台数判定処理において、いずれの外調機３を運転停止又は運転開始させても、各空調対象空間５における目標風量に対して各風量制御装置４にて制御した制御風量のバラツキ度合いが設定範囲内にない場合には、制御風量のバラツキ度合いが最小となる外調機３を、運転停止又は運転開始させる外調機３として決定している。 In other words, in the unit number determination process, when the degree of variation in the controlled airflow controlled by each airflow control device 4 with respect to the target airflow in each air-conditioned space 5 is not within the set range regardless of which outdoor air-conditioning unit 3 is stopped or started, the outdoor air-conditioning unit control unit 8 determines the outdoor air-conditioning unit 3 with the smallest degree of variation in the controlled airflow as the outdoor air-conditioning unit 3 to be stopped or started.

図３では、運転台数を減少させる場合を例示しているが、運転台数を増加させる場合も、図３と同様に、ある１つの台数変更パターンにて台数変更処理を行った上で、バラツキ度合いが設定範囲内にあるか否かを判定する台数変更パターン判定処理を行い、これらの動作を繰り返し行うことで、複数種の台数変更パターンから実際に実行する１つの台数変更パターンを決定している。 Figure 3 shows an example of a case where the number of operating vehicles is reduced, but when the number of operating vehicles is increased, the same as in Figure 3, a number change process is performed using one number change pattern, and then a number change pattern determination process is performed to determine whether the degree of variation is within a set range. By repeating these operations, one number change pattern to be actually executed is determined from multiple number change patterns.

このように、台数制御では、外調機制御部８が、運転台数を増減させる場合に、風量制御装置４にて制御した制御風量のバラツキ度合いを考慮した台数判定処理を行うことで、外調機３の圧損の違いの大きさを考慮しながら、台数変更パターンを決定することができる。よって、外調機制御部８が、台数判定処理にて決定した台数変更パターンにて運転台数の増減を行うことで、圧損を小さくする状態で外調機３の運転台数を増減させることができ、省エネルギー化を図ることができる。 In this way, in unit count control, when the outdoor air-conditioning unit control unit 8 increases or decreases the number of operating units, it performs a unit count determination process that takes into account the degree of variation in the controlled air volume controlled by the air volume control device 4, and can determine a unit count change pattern while taking into account the magnitude of the difference in pressure loss of the outdoor air-conditioning units 3. Therefore, by the outdoor air-conditioning unit control unit 8 increasing or decreasing the number of operating units according to the unit count change pattern determined in the unit count determination process, it is possible to increase or decrease the number of operating outdoor air-conditioning units 3 in a state that reduces pressure loss, thereby achieving energy savings.

この実施形態では、台数制御だけではなく、風量制御においても、風量を増減させる場合に、外調機制御部８が、実際に外調機３の風量を変更した状態で、各空調対象空間５における目標風量に対して各風量制御装置４にて制御した制御風量のバラツキ度合いが設定範囲内にあるか否かの風量判定処理を行い、その風量判定処理の判定結果に応じて外調機３の風量を決定している。 In this embodiment, not only in the number of units but also in the air volume control, when increasing or decreasing the air volume, the outdoor air-conditioning unit control unit 8 performs an air volume determination process to determine whether the degree of variation in the controlled air volume controlled by each air volume control device 4 against the target air volume in each air-conditioned space 5 is within a set range while the air volume of the outdoor air-conditioning units 3 is actually changed, and determines the air volume of the outdoor air-conditioning units 3 according to the determination result of the air volume determination process.

台数判定処理の場合と同様に、外調機制御部８は、各風量制御装置４に対応する各風量センサの検出情報に基づいて、各風量制御装置４にて制御した制御風量を取得しているので、外調機制御部８は、各風量センサの検出情報に基づいて取得した風量制御装置４にて制御した制御風量と空調対象空間５における目標風量とを比較することで、バラツキ度合いが設定範囲内にあるか否かを判定している。 As with the unit number determination process, the outdoor air conditioning unit control unit 8 obtains the controlled air volume controlled by each air volume control device 4 based on the detection information of each air volume sensor corresponding to each air volume control device 4, and the outdoor air conditioning unit control unit 8 compares the controlled air volume controlled by the air volume control device 4 obtained based on the detection information of each air volume sensor with the target air volume in the air conditioned space 5 to determine whether the degree of variation is within the set range.

風量判定処理では、どの外調機３をどれだけの風量に変更するかを定めた風量変更パターンを複数種予め設定している。そして、外調機制御部８は、ある１つの風量変更パターンに複数の外調機３の風量状態を実際に制御する風量変更処理を行った上で、各風量制御装置４にて制御した制御風量のバラツキ度合いが設定範囲内にあるか否かを判定する風量変更パターン判定処理を行っており、これらの動作を繰り返し行うことで、複数種の風量変更パターンから実際に実行する１つの風量変更パターンを決定している。 In the air volume determination process, multiple air volume change patterns are set in advance, which determine which outdoor air conditioning units 3 should have their air volume changed to. The outdoor air conditioning unit control unit 8 then performs an air volume change process that actually controls the air volume state of multiple outdoor air conditioning units 3 for one air volume change pattern, and then performs an air volume change pattern determination process that determines whether the degree of variation in the controlled air volumes controlled by each air volume control device 4 is within a set range. By repeating these operations, one air volume change pattern to actually be executed is determined from the multiple air volume change patterns.

風量判定処理について、図４のフローチャートに基づいて説明する。図４は、運転台数が３台であり、３台の外調機３の全体風量を３Ｘ〔ｍ３／ｈ〕（ここで、Ｘは設定された任意の値）だけ減少させる場合を示しており、風量変更パターン１～４の４種類の風量変更パターンを設定している。 The air volume determination process will be described with reference to the flowchart in Fig. 4. Fig. 4 shows a case in which the number of operating units is three, the total air volume of the three outdoor air-conditioning units 3 is reduced by 3X [ m3 /h] (where X is an arbitrary value that has been set), and four types of air volume change patterns, air volume change patterns 1 to 4, are set.

風量変更パターンについては、最下階の外調機３を第１外調機３ａ、中間階の外調機３を第２外調機３ｂ、最上階の外調機３を第３外調機３ｃとした場合に、風量変更パターン１が、第１外調機３ａ、第２外調機３ｂ及び第３外調機３ｃのそれぞれがＸ〔ｍ３／ｈ〕ずつ風量を減少させるパターンに設定されている。風量変更パターン２が、第１外調機３ａが（Ｘ＋α）〔ｍ３／ｈ〕だけ風量を減少させ、第２外調機３ｂ及び第３外調機３ｃが（Ｘ‐α／２）〔ｍ３／ｈ〕だけ風量を減少させるパターンに設定されている。ここで、αは設定された任意の値としている。風量変更パターン３が、第２外調機３ｂが（Ｘ＋α）〔ｍ３／ｈ〕だけ風量を減少させ、第１外調機３ａ及び第３外調機３ｃが（Ｘ‐α／２）〔ｍ３／ｈ〕だけ風量を減少させるパターンに設定されている。風量変更パターン４が、第３外調機３ｃが（Ｘ＋α）〔ｍ３／ｈ〕だけ風量を減少させ、第１外調機３ａ及び第２外調機３ｂが（Ｘ‐α／２）〔ｍ３／ｈ〕だけ風量を減少させるパターンに設定されている。 Regarding the air volume change patterns, when the outdoor air-conditioning unit 3 on the lowest floor is the first outdoor air-conditioning unit 3a, the outdoor air-conditioning unit 3 on the middle floor is the second outdoor air-conditioning unit 3b, and the outdoor air-conditioning unit 3 on the highest floor is the third outdoor air-conditioning unit 3c, air volume change pattern 1 is set to a pattern in which the first outdoor air-conditioning unit 3a, the second outdoor air-conditioning unit 3b, and the third outdoor air-conditioning unit 3c each reduce their air volume by X [ m3 /h]. Air volume change pattern 2 is set to a pattern in which the first outdoor air-conditioning unit 3a reduces its air volume by (X+α) [ m3 /h], and the second outdoor air-conditioning unit 3b and the third outdoor air-conditioning unit 3c reduce their air volume by (X-α/2) [ m3 /h]. Here, α is an arbitrary value that has been set. Air volume change pattern 3 is set to a pattern in which the second outdoor air-conditioning unit 3b reduces the air volume by (X+α) [ m3 /h], and the first outdoor air-conditioning unit 3a and the third outdoor air-conditioning unit 3c reduce the air volume by (X-α/2) [ m3 /h]. Air volume change pattern 4 is set to a pattern in which the third outdoor air-conditioning unit 3c reduces the air volume by (X+α) [ m3 /h], and the first outdoor air-conditioning unit 3a and the second outdoor air-conditioning unit 3b reduce the air volume by (X-α/2) [ m3 /h].

図４に示すように、外調機制御部８が、まず、風量変更パターン１にて風量変更処理を行った上で、風量変更パターン判定処理を行い、バラツキ度合いが設定範囲内にあるか否かを判定している（ステップ＃１１、ステップ＃１２）。バラツキ度合いが設定範囲内にある場合には（ステップ＃１２のＹｅｓの場合）、風量を減少させるパターンを、風量変更パターン１に決定している（ステップ＃１３）。 As shown in FIG. 4, the outdoor air conditioning unit control unit 8 first performs an air volume change process using air volume change pattern 1, then performs an air volume change pattern determination process to determine whether the degree of variation is within a set range (steps #11 and #12). If the degree of variation is within the set range (Yes in step #12), the pattern for reducing the air volume is determined to be air volume change pattern 1 (step #13).

バラツキ度合いが設定範囲外である場合には（ステップ＃１２のＮｏの場合）、風量変更パターン２にて風量変更処理を行った上で、風量変更パターン判定処理を行い、バラツキ度合いが設定範囲内にあるか否かを判定している（ステップ＃１４、ステップ＃１５）。バラツキ度合いが設定範囲内にある場合には（ステップ＃１５のＹｅｓの場合）、風量を減少させるパターンを、風量変更パターン２に決定している（ステップ＃１６）。 If the degree of variation is outside the set range (No in step #12), the airflow change process is performed using airflow change pattern 2, and then an airflow change pattern determination process is performed to determine whether the degree of variation is within the set range (steps #14 and #15). If the degree of variation is within the set range (Yes in step #15), the pattern for reducing the airflow is determined to be airflow change pattern 2 (step #16).

バラツキ度合いが設定範囲外である場合には（ステップ＃１５のＮｏの場合）、風量変更パターン３にて風量変更処理を行った上で、風量変更パターン判定処理を行い、バラツキ度合いが設定範囲内にあるか否かを判定している（ステップ＃１７、ステップ＃１８）。バラツキ度合いが設定範囲内にある場合には（ステップ＃１８のＹｅｓの場合）、風量を減少させるパターンを、風量変更パターン３に決定している（ステップ＃１９）。 If the degree of variation is outside the set range (No in step #15), the airflow change process is performed using airflow change pattern 3, and then an airflow change pattern determination process is performed to determine whether the degree of variation is within the set range (steps #17 and #18). If the degree of variation is within the set range (Yes in step #18), the pattern for reducing the airflow is determined to be airflow change pattern 3 (step #19).

バラツキ度合いが設定範囲外である場合には（ステップ＃１８のＮｏの場合）、風量変更パターン４にて風量変更処理を行った上で、風量変更パターン判定処理を行い、バラツキ度合いが設定範囲内にあるか否かを判定している（ステップ＃２０、ステップ＃２１）。バラツキ度合いが設定範囲内にある場合には（ステップ＃２１のＹｅｓの場合）、風量を減少させるパターンを、風量変更パターン４に決定している（ステップ＃２２）。 If the degree of variation is outside the set range (No in step #18), the airflow change process is performed using airflow change pattern 4, and then an airflow change pattern determination process is performed to determine whether the degree of variation is within the set range (steps #20 and #21). If the degree of variation is within the set range (Yes in step #21), the pattern for reducing the airflow is determined to be airflow change pattern 4 (step #22).

バラツキ度合いが設定範囲外である場合には（ステップ＃２１のＮｏの場合）、風量変更パターン１～４のいずれのパターンでもバラツキ度合いが設定範囲内になっていないので、風量を減少させるパターンを、風量変更パターン１～４のうちから、バラツキ度合いが最小となる風量変更パターンに決定している（ステップ＃２３）。 If the degree of variation is outside the set range (No in step #21), the degree of variation is not within the set range for any of airflow change patterns 1 to 4, so the pattern for reducing the airflow is determined to be the airflow change pattern from airflow change patterns 1 to 4 that has the smallest degree of variation (step #23).

図４では、外調機３の風量を減少させる場合を例示しているが、外調機３の風量を増加させる場合も、図４と同様に、ある１つの風量変更パターンにて風量変更処理を行った上で、バラツキ度合いが設定範囲内にあるか否かを判定する風量変更パターン判定処理を行い、これらの動作を繰り返し行うことで、複数種の風量変更パターンから実際に制御する１つの風量変更パターンを決定している。 Figure 4 shows an example of decreasing the air volume of the outdoor air-conditioning unit 3, but when increasing the air volume of the outdoor air-conditioning unit 3, the same as in Figure 4, an air volume change process is performed with one air volume change pattern, and then an air volume change pattern determination process is performed to determine whether the degree of variation is within a set range. By repeating these operations, one air volume change pattern to actually be controlled is determined from multiple air volume change patterns.

このように、風量制御では、外調機制御部８が、外調機３の風量を増減させる場合に、風量制御装置４にて制御した制御風量のバラツキ度合いを考慮した風量判定処理を行うことで、外調機３の圧損の違いの大きさを考慮しながら、風量変更パターンを決定することができる。よって、外調機制御部８が、風量判定処理にて決定した風量変更パターンにて外調機３の風量の増減を行うことで、圧損を小さくする状態で外調機３の風量を増減させることができ、省エネルギー化を図ることができる。 In this way, in air volume control, when the outdoor air conditioning unit control unit 8 increases or decreases the air volume of the outdoor air conditioning unit 3, it performs an air volume determination process that takes into account the degree of variation in the controlled air volume controlled by the air volume control device 4, and can determine an air volume change pattern while taking into account the magnitude of the difference in pressure loss of the outdoor air conditioning unit 3. Therefore, by the outdoor air conditioning unit control unit 8 increasing or decreasing the air volume of the outdoor air conditioning unit 3 using the air volume change pattern determined in the air volume determination process, it is possible to increase or decrease the air volume of the outdoor air conditioning unit 3 in a state that reduces pressure loss, thereby achieving energy savings.

〔別実施形態〕
本発明の他の実施形態について説明する。尚、以下に説明する各実施形態の構成は、それぞれ単独で適用することに限らず、他の実施形態の構成と組み合わせて適用することも可能である。 [Another embodiment]
Other embodiments of the present invention will be described below. Note that the configurations of the embodiments described below are not limited to being applied alone, but may also be applied in combination with the configurations of other embodiments.

（１）上記実施形態では、外調機制御部８が、各風量制御装置４に対応する各風量センサの検出情報に基づいて、各風量制御装置４にて制御した制御風量を取得しているが、例えば、各風量制御装置４の吹出口における吹出圧力を検出する圧力センサを備え、外調機制御部８が、各風量制御装置４における各圧力センサの検出情報に基づいて、各風量制御装置４にて制御した制御風量を取得することもできる。 (1) In the above embodiment, the outdoor air conditioning unit control unit 8 obtains the controlled air volume controlled by each air volume control device 4 based on the detection information of each air volume sensor corresponding to each air volume control device 4. However, for example, a pressure sensor that detects the blowing pressure at the outlet of each air volume control device 4 may be provided, and the outdoor air conditioning unit control unit 8 may obtain the controlled air volume controlled by each air volume control device 4 based on the detection information of each pressure sensor in each air volume control device 4.

（２）上記実施形態では、台数判定処理において、台数変更パターン１～３の３種類の台数変更パターンを設定しているが、パターンの内容や数については適宜変更が可能である。 (2) In the above embodiment, three types of number change patterns, number change patterns 1 to 3, are set in the number determination process, but the content and number of patterns can be changed as appropriate.

例えば、第１外調機３ａの１台のみを運転させている状態において、運転台数を１台から２台に増加させる場合には、台数変更パターン１を、第２外調機３ｂを運転開始させ、第３外調機３ｃを運転停止させたままとするパターンに設定し、台数変更パターン２を、第３外調機３ｃを運転開始させ、第２外調機３ｂを運転停止させたままとするパターンに設定して、２種類の台数変更パターンを設定することもできる。 For example, when only the first outdoor air-conditioning unit 3a is in operation and the number of operating units is to be increased from one to two, it is possible to set two types of number-change patterns by setting number-change pattern 1 to a pattern in which the second outdoor air-conditioning unit 3b is started in operation and the third outdoor air-conditioning unit 3c is kept stopped, and setting number-change pattern 2 to a pattern in which the third outdoor air-conditioning unit 3c is started in operation and the second outdoor air-conditioning unit 3b is kept stopped.

（３）上記実施形態では、風量判定処理において、風量変更パターン１～４の４種類の風量変更パターンを設定しているが、パターンの内容や数については適宜変更が可能である。 (3) In the above embodiment, four types of airflow change patterns, airflow change patterns 1 to 4, are set in the airflow determination process, but the content and number of patterns can be changed as appropriate.

例えば、第１外調機３ａ及び第２外調機３ｂを運転させている状態において、外調機３の全体風量を２Ｘ〔ｍ３／ｈ〕（ここで、Ｘは設定された任意の値）だけ増加させる場合には、風量変更パターン１を、第１外調機３ａ及び第２外調機３ｂのそれぞれがＸ〔ｍ３／ｈ〕ずつ風量を増加させるパターンに設定し、風量変更パターン２を、第１外調機３ａが（Ｘ＋α）〔ｍ３／ｈ〕だけ風量を増加させ、第２外調機３ｂが（Ｘ‐α）〔ｍ３／ｈ〕だけ風量を増加させるパターンに設定し、風量変更パターン３を、第１外調機３ａが（Ｘ‐α）〔ｍ３／ｈ〕だけ風量を増加させ、第２外調機３ｂが（Ｘ＋α）〔ｍ３／ｈ〕だけ風量を増加させるパターンに設定して、３種類の風量変更パターンを設定することもできる。 For example, when the first outdoor air-conditioning unit 3a and the second outdoor air-conditioning unit 3b are operating and the total air volume of the outdoor air-conditioning units 3 is to be increased by 2X [ m3 /h] (where X is an arbitrary set value), air volume change pattern 1 can be set to a pattern in which the first outdoor air-conditioning unit 3a and the second outdoor air-conditioning unit 3b each increase their air volume by X [ m3 /h], air volume change pattern 2 can be set to a pattern in which the first outdoor air-conditioning unit 3a increases its air volume by (X+α) [ m3 /h] and the second outdoor air-conditioning unit 3b increases its air volume by (X-α) [ m3 /h], and air volume change pattern 3 can be set to a pattern in which the first outdoor air-conditioning unit 3a increases its air volume by (X-α) [ m3 /h] and the second outdoor air-conditioning unit 3b increases its air volume by (X+α) [ m3 /h], thereby setting three types of air volume change patterns.

１ 空調システム
３ 外調機
４ 風量制御装置
５ 空調対象空間
８ 外調機制御部 1 Air conditioning system 3 Outdoor air conditioner 4 Air volume control device 5 Air-conditioned space 8 Outdoor air conditioner control unit

Claims (4)

外気処理する複数の外調機と、
その外調機から空調対象空間への外気処理後の空気の風量を目標風量に制御する風量制御装置と、
複数の前記外調機の出力制御を行う外調機制御部とが備えられ、
前記風量制御装置は、複数の空調対象空間の夫々に対して備えられ、
前記外調機は、前記風量制御装置よりも少ない数量備えられ、
前記風量制御装置は、前記空調対象空間への外気処理後の空気の風量を、前記空調対象空間の夫々に対する一定の目標風量に調整する定風量制御装置であり、
前記外調機制御部は、前記空調対象空間の夫々に対する前記一定の目標風量と前記風量制御装置の吹出口での風量である制御風量との差を前記空調対象空間の夫々において求めて、求めた前記空調対象空間の夫々に対する前記一定の目標風量と前記制御風量との差のバラツキ度合いが設定範囲内に収まるように、複数の外調機の出力制御を行うように構成されている空調システム。 A plurality of outdoor air conditioners for processing outdoor air;
an air volume control device that controls the volume of air after outdoor air processing from the outdoor air conditioning unit to the space to be air-conditioned to a target air volume;
An outdoor air conditioner control unit that controls the output of the outdoor air conditioners,
The air volume control device is provided for each of a plurality of air conditioned spaces,
The outdoor air conditioners are provided in a smaller number than the air volume control devices,
The air volume control device is a constant air volume control device that adjusts the air volume of the air after outside air processing into the air conditioned space to a constant target air volume for each of the air conditioned spaces,
The outdoor air-conditioning unit control unit is configured to calculate the difference between the constant target air volume for each of the air-conditioned spaces and the control air volume, which is the air volume at the air outlet of the air volume control device, for each of the air-conditioned spaces, and to control the output of multiple outdoor air-conditioning units so that the degree of variation in the difference between the constant target air volume and the control air volume for each of the air-conditioned spaces falls within a set range. 前記外調機制御部は、出力制御として、前記外調機の風量を決定してその決定した風量になるように外調機の出力を制御する風量制御を行い、
前記外調機制御部は、その風量制御において、実際に外調機の風量を変更した状態で、前記空調対象空間の夫々に対する前記一定の目標風量と前記制御風量との差のバラツキ度合いが設定範囲内にあるか否かの風量判定処理を行い、その風量判定処理の判定結果に応じて外調機の風量を決定している請求項１に記載の空調システム。 The outdoor air-conditioning unit control unit performs, as output control, air volume control by determining the air volume of the outdoor air-conditioning unit and controlling the output of the outdoor air-conditioning unit so that the determined air volume is achieved;
The air conditioning system of claim 1, wherein the outdoor air conditioning unit control unit, in its air volume control, performs an air volume determination process to determine whether the degree of variation in the difference between the constant target air volume and the controlled air volume for each of the air conditioned spaces is within a set range while actually changing the air volume of the outdoor air conditioning unit , and determines the air volume of the outdoor air conditioning unit depending on the result of the air volume determination process. 前記外調機制御部は、出力制御として、運転停止又は運転開始させる前記外調機を決定してその決定した外調機を運転停止又は運転開始させるように外調機の出力を制御する台数制御を行い、
前記外調機制御部は、その台数制御において、実際に外調機を運転停止又は運転開始させた状態で、前記空調対象空間の夫々に対する前記一定の目標風量と前記制御風量との差のバラツキ度合いが設定範囲内にあるか否かの台数判定処理を行い、その台数判定処理の判定結果に応じて運転停止又は運転開始させる外調機を決定している請求項１又は２に記載の空調システム。 The outdoor air-conditioning unit control unit performs, as output control, a unit number control for determining which outdoor air-conditioning units are to be stopped or started, and controlling the output of the outdoor air-conditioning units so as to stop or start the operation of the determined outdoor air-conditioning units;
The air conditioning system of claim 1 or 2, wherein the outdoor air conditioning unit control unit, in its number control, performs a number determination process to determine whether the degree of variation in the difference between the constant target air volume and the controlled air volume for each of the air conditioned spaces is within a set range while the outdoor air conditioning units are actually stopped or started in operation, and determines which outdoor air conditioning units to stop or start in operation depending on the result of the number determination process. 前記外調機制御部は、前記台数判定処理において、いずれの前記外調機を運転停止又は運転開始させても、前記空調対象空間の夫々に対する前記一定の目標風量と前記制御風量との差のバラツキ度合いが設定範囲内にない場合には、前記空調対象空間の夫々に対する前記一定の目標風量と前記制御風量との差のバラツキ度合いが最小となる外調機を、運転停止又は運転開始させる外調機として決定する請求項３に記載の空調システム。 The air conditioning system of claim 3, wherein, in the number determination process, if the degree of variation in the difference between the constant target air volume and the control air volume for each of the air conditioned spaces is not within a set range regardless of which of the outdoor air conditioning units is stopped or started, the outdoor air conditioning unit control unit determines the outdoor air conditioning unit that has the smallest degree of variation in the difference between the constant target air volume and the control air volume for each of the air conditioned spaces as the outdoor air conditioning unit to be stopped or started.
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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013217634A (en) 2012-03-13 2013-10-24 Taisei Corp Energy saving air conditioning system
JP2019148410A (en) 2018-02-26 2019-09-05 日本ピーマック株式会社 Latent heat treatment module, outside air treatment device and air-conditioning system

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013217634A (en) 2012-03-13 2013-10-24 Taisei Corp Energy saving air conditioning system
JP2019148410A (en) 2018-02-26 2019-09-05 日本ピーマック株式会社 Latent heat treatment module, outside air treatment device and air-conditioning system

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