JP6425750B2

JP6425750B2 - Air conditioning system

Info

Publication number: JP6425750B2
Application number: JP2017037888A
Authority: JP
Inventors: 木村　恵一; 恵一木村; 森田　満津雄; 満津雄森田; 貴之石田; 後藤　和也; 和也後藤; 英数佐藤
Original assignee: 木村工機株式会社
Priority date: 2017-03-01
Filing date: 2017-03-01
Publication date: 2018-11-21
Anticipated expiration: 2037-03-01
Also published as: JP2018146118A

Description

本発明は空気調和システムに関するものである。 The present invention relates to an air conditioning system.

熱交換用の循環水を空調エネルギーとして用いる空気調和システムは、循環水の温度を調整する熱源機と、循環水が流れる熱交換器で空調用空気の給気温度を調整して被空調空間の空調を行う空調機と、空調機および熱源機に循環水を循環させる水循環機器などで構成している。空調機の熱交換器で空調用空気に対して吸熱または放熱して設定水温から外れた循環水は、熱源機によって冷却または加熱することで設定水温に調整している。そして、被空調空間の空調負荷に応じて熱源機の供給水温を変動させる中央制御方式で熱源機の省エネを図っている。 An air conditioning system that uses circulating water for heat exchange as air conditioning energy adjusts the air supply temperature of air conditioning air with a heat source unit that adjusts the temperature of the circulating water and a heat exchanger through which the circulating water flows, It consists of an air conditioner that performs air conditioning, and a water circulation device that circulates circulating water to the air conditioner and a heat source device. The circulating water which is absorbed or released from the air conditioning air by the heat exchanger of the air conditioner and deviates from the set water temperature is adjusted to the set water temperature by cooling or heating with the heat source unit. And the energy saving of a heat source machine is aimed at by the central control system which fluctuates the supply water temperature of a heat source machine according to the air-conditioning load of air conditioned space.

特開２０１６−８５０１３号公報JP, 2016-85013, A

このような中央制御方式では、被空調空間の空調負荷を計測するためのセンサ類や、熱源機の制御装置と空調機の制御装置との通信機器が必要で、制御が複雑となり計装工事などの設備コストが高くなる。また、空調機は外気と還気を混合した後、熱交換器で冷却や除湿、加熱などを行っている。このような方式の空調機では、例えば夏期の冷房運転の場合、冷却除湿後に再熱しなければ給気の湿度制御ができない。そのため、再熱するエネルギーが必要なうえに、冷水と温水を同時に流す４管式の設備が必要となり設備コストと運転コストが高くなる。また、冬期でも冷房運転を必要とする場合、４管式の設備が必要となり設備コストと運転コストが高くなる問題がある。 In such a central control system, sensors for measuring the air conditioning load of the air conditioned space, and communication equipment between the control device of the heat source machine and the control device of the air conditioner are required, and the control becomes complicated. Equipment costs will increase. In addition, the air conditioner mixes outside air and return air, and then performs cooling, dehumidification, heating, etc. with a heat exchanger. In this type of air conditioner, for example, in the case of cooling operation in summer, humidity control of the air supply can not be performed unless reheating is performed after the cooling dehumidification. Therefore, in addition to the need for reheating energy, a four-tube type facility for simultaneously flowing cold water and warm water is required, and the facility cost and the operation cost become high. In addition, when the cooling operation is required even in the winter season, a four-pipe type of equipment is required, and there is a problem that equipment cost and operation cost become high.

本発明は上記課題を解決するため、空調用空気を被空調空間に供給して冷房又は暖房する空調機と、前記空調機を制御して前記空調用空気を前記冷房又は前記暖房に適した空気状態に調整する空調機制御装置と、前記空調用空気の空気状態の調整のために前記空調機に供給される循環水の供給水温を調整する熱源機と、前記空調機制御装置から独立した制御装置であって前記循環水の前記供給水温を外気負荷の変動に応じて自動的に可変調整する熱源機制御装置と、を備えたことを最も主要な特徴とする。 In order to solve the above problems, the present invention provides an air conditioner for supplying air conditioning air to an air conditioned space to cool or heat, and an air conditioner suitable for the cooling or heating by controlling the air conditioner. An air conditioner controller that adjusts to a state, a heat source machine that adjusts the supply water temperature of circulating water supplied to the air conditioner to adjust the air state of the air conditioning air, and control independent of the air conditioner controller The apparatus is characterized in that it comprises a heat source controller that automatically and variably adjusts the temperature of the supplied water of the circulating water according to the change in the load of the outside air.

請求項１の発明によれば、通常、外気負荷である屋外の温度と湿度に比例して被空調空間の空調負荷は変動するので、外気負荷が少ないと被空調空間の空調負荷も少ないと予測できる。それを利用して、空調機への循環水の供給水温を、夏期は上げて冬期は下げれば、熱源機の消費エネルギーが減って省エネを図れる。複雑でコストの掛かる中央制御方式を用いずに、制御を空調機側と熱源機側に完全分離し独立させているため、計装工事が簡略化され保守管理が楽となる。 According to the first aspect of the present invention, the air conditioning load of the air conditioned space fluctuates in proportion to the outdoor temperature and humidity which is the external air load, so it is predicted that the air conditioning load of the air conditioned space is small if the external air load is small. it can. If the supply water temperature of circulating water to the air conditioner is raised in summer and lowered in winter using this, the energy consumption of the heat source machine can be reduced and energy saving can be achieved. Since the control is completely separated and independent between the air conditioner side and the heat source side without using a complicated and costly central control system, instrumentation work is simplified and maintenance management becomes easy.

また、空調用空気である外気を第１熱交換器で冷却除湿し、空調用空気である還気を第２熱交換器で除湿せずに冷却すれば、２管式で外気負荷（潜熱）と室内負荷（顕熱）を個別に処理して再熱効果を得られ、再熱エネルギー分が省エネとなる。２管式なので熱源機や循環水の配管設備が簡略化されて省エネ、省コストとなる。第１熱交換器の第１処理後の循環水で第２熱交換器の第２処理を行って循環水の水温差を拡大しているので、熱源機の運転効率が良くなり省エネとなる。第１水路とバイパス水路を構成する配管長と、第１水量調整弁及び第２水量調整弁の数を最小限に抑えて空調システムを簡略化し、コストダウンできる。被空調空間の空調負荷が大きければ第１処理と第２処理を両方行う運転とし、小さければ第１処理のみを行う運転とすることで、空調用空気を冷房又は暖房に適した空気状態に調整する制御範囲が広がる。したがって、被空調空間の空調負荷と外気負荷がアンバランスになって熱源機から空調機へのエネルギー供給に過不足がでても、被空調空間に対して安定した空調が行える。Also, if outside air, which is air conditioning air, is cooled and dehumidified by the first heat exchanger, and return air, which is air conditioning air, is cooled without being dehumidified by the second heat exchanger, external air load (latent heat) with a two-pipe system And the indoor load (sensible heat) is treated separately to obtain the reheating effect, and the reheating energy component is energy saving. Because it is a two-pipe type, heat source equipment and piping equipment for circulating water are simplified to save energy and cost. Since the second treatment of the second heat exchanger is performed with the circulating water after the first treatment of the first heat exchanger to widen the water temperature difference of the circulating water, the operation efficiency of the heat source machine is improved and energy saving is achieved. The air conditioning system can be simplified and the cost can be reduced by minimizing the length of the pipe that constitutes the first water channel and the bypass water channel, and the number of the first water amount adjusting valve and the second water amount adjusting valve. The air conditioning load is adjusted to an air state suitable for cooling or heating by setting the operation to perform both the first process and the second process if the air conditioning load of the air conditioned space is large and setting the operation to perform only the first process if small. Control range is extended. Therefore, stable air conditioning can be performed on the air conditioned space even if the air conditioning load of the air conditioned space and the external air load become unbalanced and the energy supply from the heat source machine to the air conditioner is excessive or insufficient.

請求項２の発明によれば、空調機による熱交換で生じた循環水の水温差が、予め設定した水温差の範囲内を外れると、空調機に供給する循環水のエネルギーに過不足がでていることになる。それを利用して、予め設定した水温差の範囲を超えた場合は循環水の水速を上げ、水温差の範囲に満たない場合は循環水の水速を下げることで熱源機出力の過不足を補える。制御を空調機側と熱源機側に完全分離し独立させていても、熱源機から空調機へのエネルギー供給が安定し、快適性の維持と省エネを図れる。 According to the invention of claim 2 , when the water temperature difference of the circulating water generated by the heat exchange by the air conditioner goes out of the preset water temperature difference range, the energy of the circulating water to be supplied to the air conditioner is excessive or insufficient. It will be. If it exceeds the preset water temperature difference range by using it, increase the water speed of circulating water, and if it does not meet the water temperature difference range, reduce the water speed of circulating water, and the excess or deficiency of heat source machine output Make up for Even if the control is completely separated and independent between the air conditioner side and the heat source side, the energy supply from the heat source machine to the air conditioner is stable, and comfort can be maintained and energy saving can be achieved.

請求項３の発明によれば、被空調空間の排気熱を利用して空調機に供給される空調用空気を予冷又は予熱するので、空調機で処理する空調負荷が減って省エネとなる。外調機がヒートポンプ式なのでエネルギー消費効率が高く省エネとなる。 According to the invention of claim 3 , since the air conditioning air supplied to the air conditioner is pre-cooled or preheated by utilizing the exhaust heat of the air conditioned space, the air conditioning load processed by the air conditioner is reduced and energy saving is realized. Energy efficiency is high and energy saving is achieved because the external air conditioner is a heat pump type.

請求項４の発明によれば、２つの気化式加湿器で加湿するので加湿不足とならず快適な環境となる。循環水の流通量を増やさずに２つの気化式加湿器の気化冷却を利用して冷やせるので省エネとなる。 According to the invention of claim 4 , since the two vaporization type humidifiers perform the humidification, the humidification does not become insufficient and a comfortable environment is obtained. Energy can be saved because cooling is performed using the evaporative cooling of the two evaporative humidifiers without increasing the amount of circulating water.

請求項５の発明によれば、冬期に被空調空間の方角などによって寒暖差が生じても、２管式で暖房と外気冷房を自由に切換して快適性の向上を図れる。２管式なので熱源機や循環水の配管設備が簡略化されて省エネ、省コストとなる。蒸気式加湿器で加湿するので加湿不足とならず快適な環境となる。 According to the invention of claim 5 , even if a difference in temperature occurs due to the direction of the air conditioned space in the winter season, it is possible to freely switch heating and outside air cooling with a two-pipe system to improve comfort. Because it is a two-pipe type, heat source equipment and piping equipment for circulating water are simplified to save energy and cost. Because it is humidified with a steam type humidifier, it becomes a comfortable environment without becoming humidification shortage.

請求項６の発明によれば、空調用空気の冷却又は加熱に要するエンタルピーが小さい方の処理の風量を多くして空調負荷を減らすことで省エネを図れる。したがって、被空調空間の空調負荷と外気負荷がアンバランスになって熱源機から空調機へのエネルギー供給に過不足がでても、被空調空間に対して安定した空調が行える。 According to the sixth aspect of the present invention, it is possible to achieve energy saving by increasing the air volume of the process with the smaller enthalpy required for cooling or heating the air for air conditioning to reduce the air conditioning load. Therefore, stable air conditioning can be performed on the air conditioned space even if the air conditioning load of the air conditioned space and the external air load become unbalanced and the energy supply from the heat source machine to the air conditioner is excessive or insufficient.

請求項７の発明によれば、空調用空気である外気を第３熱交換器で冷却除湿し、空調用空気である還気を第４熱交換器で除湿せずに冷却すれば、２管式で外気負荷（潜熱）と室内負荷（顕熱）を個別に処理して再熱効果を得られ、再熱エネルギー分が省エネとなる。２管式なので熱源機や循環水の配管設備が簡略化されて省エネ、省コストとなる。第２水路と第３水路を構成する配管長と、第３水量調整弁の数を最小限に抑えて空調システムを簡略化し、コストダウンできる。被空調空間の方角などによって寒暖差が生じても、循環水の温度にかかわらず第２ヒートポンプで暖房と冷房を自由に切換して空調でき快適性の向上を図れる。 According to the invention of claim 7 , the outside air, which is air conditioning air, is cooled and dehumidified by the third heat exchanger, and the return air, which is air conditioning air, is cooled without being dehumidified by the fourth heat exchanger. In the formula, the external air load (latent heat) and the indoor load (sensible heat) are treated separately to obtain the reheat effect, and the reheat energy component saves energy. Because it is a two-pipe type, heat source equipment and piping equipment for circulating water are simplified to save energy and cost. The air conditioning system can be simplified and the cost can be reduced by minimizing the number of pipe lengths constituting the second and third water channels and the number of third water amount adjustment valves. Even if a difference in temperature occurs due to the direction of the air conditioned space, heating and cooling can be freely switched by the second heat pump regardless of the temperature of the circulating water, and the comfort can be improved.

図１〜図７は本発明の空気調和システムを示し、この空気調和システムは、空調機１、空調機制御装置２、外調機３、外調機制御装置４、熱源機５、水循環機器６及び熱源機制御装置７を備えている。建物の室内やホールなどの被空調空間Ｓと、屋外と、空調機１と、外調機３と、は図示省略のダクトで連結され、給気（ＳＡ）、外気（ＯＡ）、還気（ＲＡ）及び排気（ＥＡ）が相互に送風される。各図において実線の太い矢印は気流方向を示す。 1 to 7 show an air conditioning system according to the present invention, and the air conditioning system includes an air conditioner 1, an air conditioner control device 2, an external air conditioner 3, an external air conditioner control device 4, a heat source device 5, and a water circulation device 6 And a heat source unit controller 7. The air-conditioned space S such as a room or a hall, the outdoors, the air conditioner 1, and the air conditioner 3 are connected by a duct (not shown), and supplied with air (SA), outside air (OA), return air ( RA) and exhaust (EA) are blown to each other. In each figure, a solid thick arrow indicates the air flow direction.

空調機１は、空調用空気の給気を被空調空間Ｓへ供給して冷房又は暖房するように構成する。外調機３は、外気を予冷又は予熱して空調機１へ供給し、被空調空間Ｓの空気を屋外に排気するように構成する。空調機制御装置２は、被空調空間Ｓの空調負荷の変動に応じて空調機１を制御して空調用空気を冷房又は暖房に適した空気状態（温度及び湿度）に調整するように構成する。 The air conditioner 1 is configured to supply air for air conditioning to the air conditioned space S to cool or heat it. The external air conditioner 3 pre-cools or preheats the outside air and supplies it to the air conditioner 1 so as to exhaust the air of the air conditioned space S to the outside. The air conditioner controller 2 controls the air conditioner 1 to adjust the air conditioning air to an air state (temperature and humidity) suitable for cooling or heating according to the fluctuation of the air conditioning load of the air conditioned space S. .

熱源機５は、空調用空気の空気状態の調整のために空調機１に供給される循環水の供給水温を調整するように構成する。水循環機器６は、循環水を熱源機５と空調機１に対して循環させるように構成した水循環配管８と、水循環配管８の循環水の水速や送水量を可変できる機能を有する送水ポンプ９と、を備えている。熱源機制御装置７は、空調機制御装置２から独立した制御装置であって熱源機５を制御して循環水を外気負荷の状態に応じた供給水温に切換えるように構成する。 The heat source unit 5 is configured to adjust the supplied water temperature of the circulating water supplied to the air conditioner 1 in order to adjust the air state of the air conditioning air. The water circulation device 6 has a water circulation pipe 8 configured to circulate the circulation water to the heat source unit 5 and the air conditioner 1, and a water pump 9 having a function capable of changing the water speed and water supply amount of the circulation water of the water circulation pipe 8. And have. The heat source controller 7 is a controller independent of the air conditioner controller 2 and configured to control the heat source 5 to switch the circulating water to the supplied water temperature according to the state of the external air load .

熱源機制御装置７は、外気の温度及び湿度を検出する外気温湿度検出器１０と、空調機１への循環水の供給水温を検出する供給水温検出器１１と、空調機１から熱源機５に戻ってきた循環水の戻り水温を検出する戻り水温検出器１２と、水循環配管８の水速や送水量を検出する送水検出器１３と、送水制御部１４と、供給水温制御部１５と、熱源機出力補償部１６と、を備えている。熱源機制御装置７はマイクロプロセッサ、各種センサー、その他の制御機器で構成する。 The heat source unit controller 7 detects the temperature and humidity of the outside air, the outside air temperature and humidity detector 10, the supplied water temperature detector 11 which detects the supplied water temperature of circulating water to the air conditioner 1, and the heat source unit 5 from the air conditioner 1. A return water temperature detector 12 that detects the return water temperature of the circulating water that has returned to the above, a water detection detector 13 that detects the water speed and water supply amount of the water circulation pipe 8, a water supply control unit 14, and a water temperature control unit 15; And a heat source output compensation unit 16. The heat source device control device 7 is configured by a microprocessor, various sensors, and other control devices.

送水制御部１４は、送水ポンプ９の回転数を制御して水速や送水量を調整するように構成する。供給水温制御部１５は、予め設定した外気温度及び外気湿度と、外気温湿度検出器１０で検出された外気温度及び外気湿度と、を比較する。その結果に応じて、循環水の供給水温を切換える。具体的には、被空調空間Ｓの冷房時において予め設定した外気温度及び外気湿度に対して外気が高温高湿、低温高湿、高温低湿又は低温低湿のいずれかの場合に供給水温を高温高湿のときは６〜７℃に、低温高湿のときは７〜８℃に、高温低湿のときは８〜９℃に、低温低湿のときは９〜１０℃に、それぞれ切換えると共に、被空調空間Ｓの暖房時において予め設定した外気温度に対して外気が高温又は低温の場合に供給水温を高温のときは３４〜３６℃に、低温のときは３９〜４１℃に、それぞれ切換える。 The water supply control unit 14 is configured to control the rotation speed of the water supply pump 9 to adjust the water speed and the water supply amount. The supplied water temperature control unit 15 compares the outside air temperature and the outside air humidity set in advance with the outside air temperature and the outside air humidity detected by the outside air humidity detector 10. In accordance with the result, the supplied water temperature of the circulating water is switched. Specifically, when the air-conditioned space S is cooled, the supplied water temperature is high when the outside air is any of high temperature high humidity, low temperature high humidity, high temperature low humidity or low temperature low humidity with respect to the outside air temperature and the outside air humidity preset in advance. It switches to 6 to 7 ° C when wet, to 7 to 8 ° C when low temperature and high humidity, to 8 to 9 ° C when high temperature and low humidity, and to 9 to 10 ° C when low temperature and low humidity. When the space S is heated, the supplied water temperature is switched to 34 to 36 ° C. when the temperature is high or 39 to 41 ° C. when the temperature is low when the outside air is high or low with respect to the outside air temperature set in advance.

被空調空間Ｓの冷房時の予め設定した外気温度及び外気湿度は、例えば乾球温度２８℃で絶対湿度が０．０１１ｋｇ／ｋｇ（ＤＡ）とする。被空調空間Ｓの暖房時の予め設定した外気温度は、例えば乾球温度１３℃とする。なお、上述の供給水温と予め設定した外気温度及び外気湿度は一例で、これに限定されるものではなく設定変更は自由である。 The preset outside air temperature and outside air humidity at the time of cooling of the air conditioned space S are, for example, a dry bulb temperature of 28 ° C. and an absolute humidity of 0.011 kg / kg (DA). The preset outside air temperature at the time of heating of the air-conditioned space S is, for example, a dry bulb temperature of 13 ° C. The above-mentioned supplied water temperature and the preset outside air temperature and outside air humidity are an example, and it is not limited to this and setting change is free.

熱源機出力補償部１６は、空調機１への供給で生じる循環水の水温差（熱源機５から空調機１に供給された循環水と空調機１から熱源機５に戻ってきた循環水の水温差）が予め設定した水温差の範囲（例えば６〜１０℃）内を外れると水循環機器６を制御して循環水の水速を調整することで熱源機出力の過不足を補償するように構成する。循環水の水温差は、供給水温検出器１１と戻り水温検出器１２で検出された水温から演算して、予め設定した水温差の範囲と比較する。予め設定した水温差の範囲を超えた場合は循環水の水速や送水量を上げ、水温差の範囲に満たない場合は循環水の水速や送水量を下げるように構成する。 The heat source output compensation unit 16 sets the temperature difference of the circulating water generated by the supply to the air conditioner 1 (the circulating water supplied from the heat source machine 5 to the air conditioner 1 and the circulating water returned from the air conditioner 1 to the heat source machine 5 When the water temperature difference is out of the preset water temperature difference range (for example, 6 to 10 ° C), the water circulation device 6 is controlled to adjust the water speed of the circulating water to compensate for the excess or deficiency of the heat source machine output. Configure. The water temperature difference of the circulating water is calculated from the water temperature detected by the supplied water temperature detector 11 and the return water temperature detector 12, and is compared with a preset water temperature difference range. If it exceeds the range of the water temperature difference set in advance, the water velocity and the water supply amount of the circulating water are increased, and if it does not reach the water temperature difference range, the water velocity and the water supply amount of the circulating water are reduced.

図２に示すように、外調機３は、第１ヒートポンプ２０、加湿器２１、一対の送風機２２、混合ダンパ２３及びケーシング２４を備えている。第１ヒートポンプ２０は、空調用空気の外気と被空調空間Ｓの空気とを熱交換させることで外気を予冷（冷却）又は予熱（加熱）する。送風機２２は、外気を空調機１に給気し、被空調空間Ｓの空気を屋外に排気する。混合ダンパ２３は、第１ヒートポンプ２０で冷却又は加熱される前の外気に被空調空間Ｓの空気を混合させて予冷又は予熱するように構成する。 As shown in FIG. 2, the external air conditioner 3 includes a first heat pump 20, a humidifier 21, a pair of blowers 22, a mixing damper 23 and a casing 24. The first heat pump 20 performs precooling (cooling) or preheating (heating) of the outside air by heat exchange between the outside air of the air for air conditioning and the air of the air conditioned space S. The blower 22 supplies outside air to the air conditioner 1 and exhausts the air of the air conditioned space S to the outside. The mixing damper 23 is configured to mix the air of the air conditioned space S before being cooled or heated by the first heat pump 20 and to precool or preheat it.

第１ヒートポンプ２０は、循環冷媒に対して圧縮・凝縮・膨張・蒸発の工程順を繰返し、この循環冷媒と熱交換する外気と排気に対して冷媒蒸発工程で吸熱を冷媒凝縮工程で放熱を各々行うもので、循環冷媒の蒸発工程と凝縮工程であって互いに異なる工程を担う第７熱交換器２５及び第８熱交換器２７と、圧縮機２７と、循環冷媒を膨張させる膨張弁等の減圧機構２８と、第７熱交換器２５及び第８熱交換器２７の蒸発工程と凝縮工程を切換えるバルブ等の切換機構２９と、を少なくとも備え、これらを冷媒が循環するように配管接続して構成する。 The first heat pump 20 repeats the compression / condensation / expansion / evaporation process sequence with respect to the circulating refrigerant, and absorbs heat in the refrigerant evaporation process with respect to the outside air and the exhaust heat exchange with the circulating refrigerant. The seventh heat exchanger 25 and the eighth heat exchanger 27, which perform different processes, ie, the evaporation process and the condensation process of the circulating refrigerant, the compressor 27, and the decompression of the expansion valve or the like for expanding the circulating refrigerant. At least a mechanism 28, and a switching mechanism 29, such as a valve, for switching the evaporation process and the condensation process of the seventh heat exchanger 25 and the eighth heat exchanger 27, and these are connected by piping so as to circulate the refrigerant. Do.

第１ヒートポンプ２０は排気（被空調空間Ｓの空気）を空気熱源とする空冷ヒートポンプで、送風機２２によって第８熱交換器２７に排気を送り冷媒と熱交換する。第１ヒートポンプ２０は、いわゆる室内外一体形で天井内に設置する。図例では第１ヒートポンプ２０、加湿器２１及び送風機２２をケーシング２４内に設けているが、混合ダンパ２３もケーシング２４内に設けてもよい。 The first heat pump 20 is an air-cooled heat pump that uses exhaust (air in the conditioned space S) as an air heat source, sends the exhaust to the eighth heat exchanger 27 with the blower 22 and exchanges heat with the refrigerant. The 1st heat pump 20 is installed in a ceiling by what is called an indoor-outdoor integrated type. Although the first heat pump 20, the humidifier 21 and the blower 22 are provided in the casing 24 in the illustrated example, the mixing damper 23 may also be provided in the casing 24.

外調機制御装置４ａは、少なくとも風量制御部３０、加湿制御部３１及び圧縮機制御部３２を備えている。外調機制御装置４ａはマイクロプロセッサ、各種センサー、その他の制御機器で構成する。風量制御部３０は、送風機２２の回転数と、混合ダンパ２３のダンパ開度と、を制御して外気、還気及び排気の風量を調整するように構成する。加湿制御部３１は、加湿器２１を制御して外気への加湿量を調整するように構成する。圧縮機制御部３２は、圧縮機２７の回転数を制御して冷却又は加熱する能力を調整するように構成する。 The external air conditioner control device 4a includes at least an air volume control unit 30, a humidification control unit 31, and a compressor control unit 32. The external air conditioner controller 4a comprises a microprocessor, various sensors, and other control devices. The air volume control unit 30 controls the rotation speed of the blower 22 and the damper opening degree of the mixing damper 23 to adjust the air volumes of the outside air, the return air, and the exhaust air. The humidification control unit 31 controls the humidifier 21 to adjust the amount of humidification to the outside air. The compressor control unit 32 is configured to control the number of rotations of the compressor 27 to adjust the ability to cool or heat.

図３は複数の空調機１のうちの第１の空調機１ａを示している。この第１の空調機１ａは、第１熱交換器３５、第２熱交換器３６、第１水路３７、バイパス水路３８、第１水量調整弁３９、第２水量調整弁４０、第１加湿器４１、第２加湿器４２、第１ダンパ４３、第２ダンパ４４、第３ダンパ４５、第１送風機４６及びケーシング４７を備えている。図例では第１熱交換器３５、第２熱交換器３６、第１加湿器４１、第２加湿器４２及び第１送風機４６をケーシング４７内に設けているが、空調機制御装置２ａ、第１水路３７、バイパス水路３８、第１水量調整弁３９、第２水量調整弁４０、第１ダンパ４３、第２ダンパ４４及び第３ダンパ４５もケーシング４７内に設けてもよい。 FIG. 3 shows the first air conditioner 1 a of the plurality of air conditioners 1. The first air conditioner 1a includes a first heat exchanger 35, a second heat exchanger 36, a first water passage 37, a bypass water passage 38, a first water amount adjusting valve 39, a second water amount adjusting valve 40, and a first humidifier. 41, a second humidifier 42, a first damper 43, a second damper 44, a third damper 45, a first blower 46 and a casing 47. Although the first heat exchanger 35, the second heat exchanger 36, the first humidifier 41, the second humidifier 42, and the first blower 46 are provided in the casing 47 in the illustrated example, the air conditioner controller 2a, the first heat exchanger 35, The first water passage 37, the bypass water passage 38, the first water amount adjustment valve 39, the second water amount adjustment valve 40, the first damper 43, the second damper 44 and the third damper 45 may be provided in the casing 47.

第１熱交換器３５は、循環水の流通で空調用空気の外気を冷却又は加熱する第１処理を行うように構成する。第２熱交換器３６は、循環水の流通で空調用空気の還気を冷却又は加熱する第２処理を行うように構成する。第１水路３７は、循環水を第１熱交換器３５に流通させてから第２熱交換器３６に流通させるように水配管を設けて構成する。バイパス水路３８は、第１水路３７から分岐して第１処理後の循環水を第２熱交換器３６を通さずに迂回させるように水配管を設けて構成する。 The first heat exchanger 35 is configured to perform a first process of cooling or heating the outside air of the air-conditioning air in circulation of circulating water. The second heat exchanger 36 is configured to perform a second process of cooling or heating the return air of the air-conditioning air in circulation of circulating water. The first water channel 37 is configured by providing water piping so as to circulate circulating water to the first heat exchanger 35 and then to circulate the second heat exchanger 36. The bypass water channel 38 is configured by providing a water pipe so as to branch from the first water channel 37 and divert the circulating water after the first treatment without passing through the second heat exchanger 36.

第１水量調整弁３９は、第１処理前の循環水の流通量を変動させて第１熱交換器３５の第１処理の能力を調整するように水量比例変動方式の二方弁で構成する。第２水量調整弁４０は、第１水路３７とバイパス水路３８の循環水の流通量の配分を変動させて第２熱交換器３６の第２処理の能力を調整するように水量比例変動方式の三方弁で構成する。この第２水量調整弁４０は、第１水路３７とバイパス水路３８の一方に全量流れて他方は流れないように切換える三方弁で構成してもよい。 The first water amount adjustment valve 39 is configured by a two-way valve of a water amount proportional variation method so as to adjust the first treatment capacity of the first heat exchanger 35 by changing the circulation amount of circulating water before the first treatment. . The second water amount adjustment valve 40 changes the distribution of the circulation amount of the circulating water in the first water passage 37 and the bypass water passage 38 so as to adjust the capacity of the second treatment of the second heat exchanger 36. It consists of a three-way valve. The second water amount adjustment valve 40 may be configured by a three-way valve that switches so that the entire amount flows into one of the first water passage 37 and the bypass water passage 38 and the other does not flow.

第１加湿器４１は、第１熱交換器３５の風下で空調用空気の外気を水の気化蒸発で加湿する気化式とする。第２加湿器４２は、第２熱交換器３６の風下で空調用空気の還気を水の気化蒸発で加湿する気化式とする。第１ダンパ４３は、第１の空調機１ａに取入れる空調用空気の外気量を増減調整する。第２ダンパ４４と第３ダンパ４５は、第１の空調機１ａに取入れる空調用空気の還気量を増減調整する。第１送風機４６は、被空調空間Ｓへの空調用空気の給気量を増減調整する。第１送風機４６によって、第１ダンパ４３から取入れられた外気と第３ダンパ４５から取入れられた還気は第１熱交換器３５を通り、かつ、第２ダンパ４４から取入れられた還気は第２熱交換器３６を通って、互いに混ざり合って被空調空間Ｓへ送られる。第１ダンパ４３から取入れられる外気量は、被空調空間Ｓの二酸化炭素濃度が予め設定された範囲になるように調整される。 The first humidifier 41 is of a vaporization type in which outside air of air conditioning air is humidified by evaporation of water under the wind of the first heat exchanger 35. The second humidifier 42 is of a vaporization type in which the return air of the air conditioning air is humidified by evaporation of water under the wind of the second heat exchanger 36. The first damper 43 increases or decreases the amount of outside air of the air conditioning air introduced into the first air conditioner 1a. The second damper 44 and the third damper 45 increase / decrease the amount of return air of the air conditioning air taken into the first air conditioner 1a. The first blower 46 increases or decreases the amount of air supplied to the air-conditioned space S from the air conditioning air. The outside air taken in from the first damper 43 by the first fan 46 and the return air taken in from the third damper 45 pass through the first heat exchanger 35 and the return air taken in from the second damper 44 is The two heat exchangers 36 are mixed with each other and sent to the conditioned space S. The amount of outside air taken in from the first damper 43 is adjusted so that the carbon dioxide concentration of the air conditioned space S is in a preset range.

図４に示すように、第１熱交換器３５は、一般的なプレートフィンコイルと同様に伝熱板１８の群に伝熱管１９の群を挿着して構成する。伝熱管１９の内部に循環水を流し、伝熱管１９及び伝熱板１８に空調用空気を接触させることで、空調用空気と循環水を熱交換する。第２熱交換器３６、第７熱交換器２５及び第８熱交換器２７も第１熱交換器３５と同様に構成するが、第７熱交換器２５及び第８熱交換器２７は、伝熱管１９の内部に冷媒を流して空調用空気と熱交換する。これにより空調用空気は冷風又は温風となり空調機１及び被空調空間Ｓに供給される。 As shown in FIG. 4, the first heat exchanger 35 is configured by inserting a group of heat transfer tubes 19 into a group of heat transfer plates 18 in the same manner as a general plate fin coil. Circulating water is allowed to flow into the heat transfer pipe 19 and the air conditioning air is brought into contact with the heat transfer pipe 19 and the heat transfer plate 18 to exchange heat between the air conditioning air and the circulating water. The second heat exchanger 36, the seventh heat exchanger 25 and the eighth heat exchanger 27 are configured in the same manner as the first heat exchanger 35, but the seventh heat exchanger 25 and the eighth heat exchanger 27 The refrigerant flows inside the heat pipe 19 to exchange heat with the air for air conditioning. As a result, the air for air conditioning becomes cold air or warm air and is supplied to the air conditioner 1 and the air conditioned space S.

図３に示すように、第１の空調機１ａの空調機制御装置２ａは、外気の温度及び湿度を検出する外気温湿度検出器５０、還気の温度及び湿度を検出する還気温湿度検出器５１、空調機１ａの給気の温度及び湿度を検出する給気温湿度検出器５２、風量制御部５３、水量制御部５４、加湿制御部５５、第１外気冷房運転部５６、第１冷房能力補償部５７、第１空調能力補償部５８及び第１空調能力制御部５９を備えている。空調機制御装置２ａはマイクロプロセッサ、各種センサー、その他の制御機器で構成する。 As shown in FIG. 3, the air conditioner controller 2a of the first air conditioner 1a detects the temperature and humidity of the outside air, the outside air temperature and humidity detector 50, and the return air temperature and humidity detector which detects the temperature and humidity of return air. 51, air supply temperature and humidity detector 52 for detecting the temperature and humidity of the air supply of the air conditioner 1a, air volume control unit 53, water amount control unit 54, humidification control unit 55, first outside air cooling operation unit 56, first cooling capacity compensation A unit 57, a first air conditioning capacity compensation unit 58, and a first air conditioning capacity control unit 59 are provided. The air conditioner control device 2a is composed of a microprocessor, various sensors, and other control devices.

風量制御部５３は、空調機１ａの第１送風機４６の回転数と、第１ダンパ４３のダンパ開度と、第２ダンパ４４のダンパ開度と、第３ダンパ４５のダンパ開度と、を制御して外気、還気及び給気の各風量を調整するように構成する。水量制御部５４は、第１水量調整弁３９と、第２水量調整弁４０と、を制御して第１熱交換器３５及び第２熱交換器３６の循環水の各流通量を調整するように構成する。加湿制御部５５は、第１加湿器４１と第２加湿器４２の加湿水量を制御して外気及び還気への各加湿量を調整するように構成する。 The air volume control unit 53 includes the rotational speed of the first blower 46 of the air conditioner 1a, the damper opening degree of the first damper 43, the damper opening degree of the second damper 44, and the damper opening degree of the third damper 45. It controls to adjust each air volume of outside air, return air, and charge air. The water amount control unit 54 controls the first water amount adjusting valve 39 and the second water amount adjusting valve 40 to adjust the circulation amounts of circulating water in the first heat exchanger 35 and the second heat exchanger 36. Configure to The humidification control unit 55 is configured to control the amount of humidification water of the first humidifier 41 and the second humidifier 42 to adjust the amount of humidification to the outside air and the return air.

第１外気冷房運転部５６は、外気温湿度検出器５０で検出された第１処理前の空調用空気と第２処理前の空調用空気の一方又は両方の温度が還気温湿度検出器５１で検出された被空調空間Ｓの温度より低い場合に、空調用空気を利用して被空調空間Ｓを冷房するように構成する。この場合、第１加湿器４１と第２加湿器４２の一方又は両方で空調用空気を気化冷却して冷房負荷を減らすこともできる。第１冷房能力補償部５７は、除湿を伴わない冷却の第１処理後に、第２加湿器４２で還気を加湿することで気化冷却して、第１の空調機１ａの冷房負荷を下げるように構成する。 In the first outside air cooling operation unit 56, the temperature of one or both of the air for air conditioning before the first processing and the air for air conditioning before the second processing detected by the outside air temperature and humidity detector 50 When the temperature of the air conditioned space S is lower than the detected temperature of the air conditioned space S, the air conditioned air is used to cool the air conditioned space S. In this case, the air conditioning air can be vaporized and cooled in one or both of the first humidifier 41 and the second humidifier 42 to reduce the cooling load. The first cooling capacity compensation unit 57 reduces the cooling load of the first air conditioner 1a by performing vaporization cooling by humidifying the return air with the second humidifier 42 after the first process of cooling without dehumidification. Configure to

第１空調能力補償部５８は、第１処理に要する第１処理時エンタルピーと第２処理に要する第２処理時エンタルピーとを比較して前記エンタルピーが小さい処理の空調用空気の風量を多くして第１の空調機１ａの空調負荷を下げるように構成する。ここで、第１処理時エンタルピーは、第１処理前の外気を予め設定された給気温度まで冷却又は加熱するのに要するエンタルピーであり、第２処理時エンタルピーは、第２処理前の還気を予め設定された給気温度まで冷却又は加熱するのに要するエンタルピーである。 The first air conditioning capacity compensation unit 58 compares the first process enthalpy required for the first process with the second process enthalpy required for the second process to increase the air volume of the air conditioning air for the process having a small enthalpy. The air conditioning load of the first air conditioner 1a is configured to be reduced. Here, the enthalpy at the time of the first treatment is the enthalpy required to cool or heat the outside air before the first treatment to the preset air supply temperature, and the enthalpy at the time of the second treatment is the return air before the second treatment Is the enthalpy required to cool or heat to a preset charge air temperature.

例えば、冷房運転時、第１処理時エンタルピーが第２処理時エンタルピーよりも小さい場合、空調機１ａに取入れる空調用空気の外気の風量を増加させて空調（冷房）負荷を下げる。第１処理時エンタルピーと第２処理時エンタルピーは、外気温湿度検出器５０、還気温湿度検出器５１及び給気温湿度検出器５２で検出された温度及び湿度から演算して比較する。その結果、第１処理時エンタルピーが第２処理時エンタルピーより小さい場合は、空調用空気の外気の風量が増加するように第１送風機４６の回転数、第１ダンパ４３のダンパ開度及び第２ダンパ４４のダンパ開度を適宜調整する。 For example, when the enthalpy at the time of the first processing is smaller than the enthalpy at the time of the second processing during the cooling operation, the air volume of the outside air of the air conditioning air introduced into the air conditioner 1a is increased to lower the air conditioning (cooling) load. The first processing enthalpy and the second processing enthalpy are calculated and compared from the temperature and humidity detected by the outside air temperature / humidity detector 50, the return air temperature / humidity detector 51, and the air supply temperature / humidity detector 52. As a result, when the first processing enthalpy is smaller than the second processing enthalpy, the number of rotations of the first blower 46, the opening degree of the first damper 43, and the second opening of the first damper 43 are increased so that the flow rate of the outside air of the air conditioning air increases. The damper opening degree of the damper 44 is appropriately adjusted.

第１空調能力制御部５９は、被空調空間Ｓの空調負荷が大きければ第１処理と第２処理を両方行う運転に、被空調空間Ｓの空調負荷が小さければ第１処理のみを行う運転に、切換えて被空調空間Ｓを冷房又は暖房する能力を制御するように構成する。例えば、第１処理のみ行っても被空調空間Ｓを冷房又は暖房する能力が不足する場合は、第２処理を併用して能力不足を補う。 The first air conditioning capacity control unit 59 performs an operation that performs both the first process and the second process if the air conditioning load of the air conditioned space S is large, and an operation that performs only the first process if the air conditioning load of the air conditioned space S is small. , To control the ability to cool or heat the air-conditioned space S by switching. For example, if the ability to cool or heat the air-conditioned space S is insufficient even if only the first process is performed, the second process is used in combination to compensate for the insufficient capacity.

この空調機１ａで夏期に除湿が必要な冷房運転をする場合、外調機３の第１ヒートポンプ２０の第７熱交換器２５と第８熱交換器２７によって外気と排気を熱交換させて予冷した外気を、空調機１ａへ供給する。空調機１ａでは、外気を第１熱交換器３５で冷却除湿して、第２熱交換器３６で除湿せずに冷却した還気と混合することで生じる再熱効果で、目標の給気温度及び給気湿度に制御する。これにより、被空調空間Ｓを予め設定された温度及び湿度に空調する。外気の除湿を伴わない冷房運転時には、第１加湿器４１と第２加湿器４２の一方又は両方で空調用空気を気化冷却して省エネを図りながら冷房運転する。 When the air conditioner 1a performs a cooling operation requiring dehumidification in summer, the seventh heat exchanger 25 and the eighth heat exchanger 27 of the first heat pump 20 of the external air conditioner 3 exchange heat between the outside air and the exhaust gas to perform precooling Outside air is supplied to the air conditioner 1a. In the air conditioner 1a, the target air supply temperature is achieved by the reheat effect generated by cooling and dehumidifying the outside air with the first heat exchanger 35 and mixing it with the cooled return air without dehumidifying with the second heat exchanger 36. And control to the air supply humidity. Thereby, the air-conditioned space S is air-conditioned to a preset temperature and humidity. At the time of cooling operation without dehumidification of the outside air, the cooling operation is performed while energy saving is achieved by evaporative cooling of the air conditioning air by one or both of the first humidifier 41 and the second humidifier 42.

冬期に暖房運転する場合、外調機３の第１ヒートポンプ２０の第７熱交換器２５と第８熱交換器２７によって外気と排気を熱交換させて予熱した外気を、空調機１ａへ供給する。空調機１ａでは、外気を第１熱交換器３５で加熱し、還気を第２熱交換器３６で加熱し、第１加湿器４１及び第２加湿器４２で加湿して、混合することで給気の温度及び湿度を制御する。状況に応じて上述の冷房運転及び暖房運転時に、外調機３の混合ダンパ２３で、第１ヒートポンプ２０で冷却又は加熱される前の外気に被空調空間Ｓの空気を混合させて予冷又は予熱する。なお、外調機３で外気を予冷又は予熱せずに空調機１ａで冷房運転又は暖房運転してもよい。 When the heating operation is performed in winter, outside air and heat are exchanged by the seventh heat exchanger 25 and the eighth heat exchanger 27 of the first heat pump 20 of the outside air conditioner 3, and the preheated outside air is supplied to the air conditioner 1a. . In the air conditioner 1a, the outside air is heated by the first heat exchanger 35, the return air is heated by the second heat exchanger 36, and is humidified by the first humidifier 41 and the second humidifier 42 to mix. Control the temperature and humidity of the air supply. Depending on the situation, during the cooling operation and the heating operation described above, the mixing damper 23 of the external air conditioner 3 mixes the air of the air conditioned space S before being cooled or heated by the first heat pump 20 to perform precooling or preheating. Do. The air conditioner 1a may perform a cooling operation or a heating operation without precooling or preheating the outside air in the external air conditioner 3.

冬期に循環水が温水で冷房運転する場合、被空調空間Ｓの温度より低温の外気を外調機３から空調機１ａに供給する。この外気を第１熱交換器３５で冷房に適した温度まで加熱し、還気は第２熱交換器３６で加熱して又は加熱せずにそのまま、第１加湿器４１と第２加湿器４２の一方又は両方で加湿して、被空調空間Ｓに供給する。 When the circulating water performs cooling operation with warm water in the winter, outside air having a temperature lower than the temperature of the air-conditioned space S is supplied from the external conditioner 3 to the air conditioner 1a. The outside air is heated by the first heat exchanger 35 to a temperature suitable for cooling, and the return air is heated by the second heat exchanger 36 or not heated as it is, the first humidifier 41 and the second humidifier 42 It humidifies in one or both of, and supplies air conditioned space S.

図５は図３の空調機１ａの他の実施例を示している。この空調機１ａは、第１熱交換器３５と第２熱交換器３６の一方又は両方（図例では第１熱交換器３５）の風下で空調用空気を蒸気で加湿する蒸気式の第３加湿器４８を、備えている。第１の空調機制御装置２ａは、外気温湿度検出器５０で検出された第１処理前の空調用空気と第２処理前の空調用空気の一方又は両方の温度が還気温湿度検出器５１で検出された被空調空間Ｓの温度より低い場合に空調用空気を利用して被空調空間Ｓを冷房する第２外気冷房運転部６０を、備えている。その他の構成は図３の実施例と同様であるので説明は省略する。 FIG. 5 shows another embodiment of the air conditioner 1a of FIG. This air conditioner 1a is a steam type third system in which air conditioning air is humidified with steam under the wind of one or both of the first heat exchanger 35 and the second heat exchanger 36 (the first heat exchanger 35 in the illustrated example). A humidifier 48 is provided. In the first air conditioner control device 2a, the temperature of one or both of the air conditioning air before the first processing and the air conditioning air before the second processing detected by the outside air temperature humidity detector 50 is returned to the air temperature humidity detector 51 The second outside air cooling operation unit 60 cools the air conditioned space S by using the air conditioning air when the temperature of the air conditioned space S is lower than the temperature of the air conditioned space S detected. The other configuration is the same as that of the embodiment shown in FIG.

この空調機１ａで冬期に冷房運転する場合、被空調空間Ｓの温度より低温の外気を外調機３から空調機１ａに供給する。この外気を第１熱交換器３５で冷房に適した温度まで加熱して第３加湿器４８で蒸気加湿し、還気は第２熱交換器３６で加熱して又は加熱せずにそのまま被空調空間Ｓに供給する。 When the air conditioner 1a performs a cooling operation in the winter, the outside air having a temperature lower than the temperature of the air conditioned space S is supplied from the external air conditioner 3 to the air conditioner 1a. This outside air is heated to a temperature suitable for cooling by the first heat exchanger 35, and is steam-humidified by the third humidifier 48, and the return air is heated by the second heat exchanger 36 or not heated, and is conditioned as it is. Supply to the space S.

図６は複数の空調機１のうちの第２の空調機１ｂを示している。この第２の空調機１ｂは、第３熱交換器６２、第４熱交換器６３と第５熱交換器６４を有する第２ヒートポンプ６５、第２水路６６、第３水路６７、第３水量調整弁６８、第４加湿器６９、第４ダンパ７１、第５ダンパ７２、第６ダンパ７３、第２送風機７４及びケーシング７５を備えている。図例では第３熱交換器６２、第２ヒートポンプ６５、第４加湿器６９、第５加湿器９７及び第２送風機７４をケーシング７５内に設けているが、空調機制御装置２ｂ、第２水路６６、第３水路６７、第３水量調整弁６８、第４ダンパ７１、第５ダンパ７２及び第６ダンパ７３もケーシング７５内に設けてもよい。 FIG. 6 shows the second air conditioner 1 b among the plurality of air conditioners 1. The second air conditioner 1b includes a third heat exchanger 62, a second heat pump 65 having a fourth heat exchanger 63 and a fifth heat exchanger 64, a second water passage 66, a third water passage 67, and a third water amount adjustment. A valve 68, a fourth humidifier 69, a fourth damper 71, a fifth damper 72, a sixth damper 73, a second blower 74, and a casing 75 are provided. Although the third heat exchanger 62, the second heat pump 65, the fourth humidifier 69, the fifth humidifier 97 and the second blower 74 are provided in the casing 75 in the illustrated example, the air conditioner control device 2b, the second water channel The third water passage 67, the third water amount adjustment valve 68, the fourth damper 71, the fifth damper 72, and the sixth damper 73 may be provided in the casing 75.

第２ヒートポンプ６５は、循環冷媒に対して圧縮・凝縮・膨張・蒸発の工程順を繰返し、この循環冷媒と熱交換する還気と循環水に対して冷媒蒸発工程で吸熱を冷媒凝縮工程で放熱を各々行うもので、循環冷媒の蒸発工程と凝縮工程であって互いに異なる工程を担う第４熱交換器６３及び第５熱交換器６４と、圧縮機７６と、循環冷媒を膨張させる膨張弁等の減圧機構７７と、第４熱交換器６３及び第５熱交換器６４の蒸発工程と凝縮工程を切換えるバルブ等の切換機構７８と、を少なくとも備え、これらを冷媒が循環するように配管接続して構成する。 The second heat pump 65 repeats the compression / condensation / expansion / evaporation process sequence to the circulating refrigerant, and dissipates the heat absorption in the refrigerant evaporation process with respect to the return air that exchanges heat with the circulating refrigerant and the circulating water in the refrigerant evaporation process The fourth heat exchanger 63 and the fifth heat exchanger 64, which perform different processes, ie, the evaporation process and the condensation process of the circulating refrigerant, the compressor 76, an expansion valve for expanding the circulating refrigerant, etc. At least a pressure reducing mechanism 77 and a switching mechanism 78 such as a valve for switching the evaporation process and the condensation process of the fourth heat exchanger 63 and the fifth heat exchanger 64. Configure.

第３熱交換器６２は、循環水の流通で空調用空気の外気を冷却又は加熱する第３処理を行うように構成する。第４熱交換器６３は、冷媒の流通で空調用空気の還気を冷却又は加熱する第４処理を行うように構成する。第２水路６６は、第３処理前の循環水を第３熱交換器６２に流通させるように構成する。第３水路６７は、第２水路６６から分岐して第３処理前の循環水を第５熱交換器６４に流通させるように構成する。 The third heat exchanger 62 is configured to perform a third process of cooling or heating the outside air of the air-conditioning air in circulation of circulating water. The fourth heat exchanger 63 is configured to perform a fourth process of cooling or heating the return air of the air-conditioning air by circulating the refrigerant. The second water passage 66 is configured to cause the circulating water before the third treatment to flow to the third heat exchanger 62. The third water passage 67 is configured to branch from the second water passage 66 and to circulate the circulating water before the third treatment to the fifth heat exchanger 64.

第３水量調整弁６８は、第２水路６６と第３水路６７の循環水の流通量の配分を変動させて第３熱交換器６２の第３処理の能力を調整するように水量比例変動方式の三方弁で構成する。この第３水量調整弁６８は、第２水路６６と第３水路６７の一方に全量流れて他方は流れないように切換える三方弁で構成してもよい。 The third water amount adjustment valve 68 changes the distribution of the circulation amount of the circulating water of the second water passage 66 and the third water passage 67 to adjust the capacity of the third treatment of the third heat exchanger 62, and the water amount proportional variation method It consists of a three-way valve. The third water amount adjustment valve 68 may be configured by a three-way valve that switches so that the entire amount flows into one of the second water passage 66 and the third water passage 67 and the other does not flow.

第４加湿器６９は、第３熱交換器６２の風下で蒸気で加湿する蒸気式とする。第４ダンパ７１は、第２の空調機１ｂに取入れる空調用空気の外気量を増減調整する。第５ダンパ７２と第６ダンパ７３は、第２の空調機１ｂに取入れる空調用空気の還気量を増減調整する。第２送風機７４は、被空調空間Ｓへの空調用空気の給気量を増減調整する。第２送風機７４によって、第４ダンパ７１から取入れられた外気と第６ダンパ７３から取入れられた還気は第３熱交換器６２を通り、かつ、第５ダンパ７２から取入れられた還気は第４熱交換器６３を通って、互いに混ざり合って被空調空間Ｓへ送られる。第４ダンパ７１から取入れられる外気量は、被空調空間Ｓの二酸化炭素濃度が予め設定された範囲になるように調整される。 The fourth humidifier 69 is a steam type that is humidified with steam under the wind of the third heat exchanger 62. The fourth damper 71 increases or decreases the amount of outside air of the air conditioning air introduced into the second air conditioner 1b. The fifth damper 72 and the sixth damper 73 increase / decrease the amount of return air of the air-conditioning air introduced into the second air conditioner 1 b. The second blower 74 increases or decreases the amount of air supplied to the conditioned space S from the air for air conditioning. The outside air taken from the fourth damper 71 by the second blower 74 and the return air taken from the sixth damper 73 pass through the third heat exchanger 62 and the return air taken from the fifth damper 72 is the fifth The four heat exchangers 63 are mixed with each other and sent to the conditioned space S. The amount of outside air introduced from the fourth damper 71 is adjusted such that the carbon dioxide concentration in the air-conditioned space S is in a preset range.

第３熱交換器６２は上述の第１熱交換器３５と同様に構成する。第４熱交換器６３は上述の第７熱交換器２５と同様に構成する。第５熱交換器６４は、一般的なプレート式熱交換器と同様に内部を伝熱板で区画して構成し、この伝熱板と伝熱板の間に循環水と冷媒を交互に流し、伝熱板を介して、循環水と冷媒を熱交換する。 The third heat exchanger 62 is configured in the same manner as the first heat exchanger 35 described above. The fourth heat exchanger 63 is configured in the same manner as the seventh heat exchanger 25 described above. The fifth heat exchanger 64 is configured by dividing the inside by a heat transfer plate as in a general plate type heat exchanger, and circulating water and a refrigerant are alternately flowed between the heat transfer plate and the heat transfer plate to transfer the heat Heat exchange between the circulating water and the refrigerant is performed via the heat plate.

第２の空調機１ｂの空調機制御装置２ｂは、外気の温度及び湿度を検出する外気温湿度検出器８１、還気の温度及び湿度を検出する還気温湿度検出器８２、空調機１ｂの給気の温度及び湿度を検出する給気温湿度検出器８３、風量制御部８４、水量制御部８５、加湿制御部８６及び圧縮機制御部８７を備えている。空調機制御装置２ｂはマイクロプロセッサ、各種センサー、その他の制御機器で構成する。 The air conditioner controller 2b of the second air conditioner 1b detects the temperature and humidity of the outside air, the outside air temperature and humidity detector 81, the temperature and humidity detector 82 for detecting the temperature and humidity of the return air, and the air conditioner 1b An air supply temperature / humidity detector 83 for detecting the temperature and humidity of air, an air flow control unit 84, a water control unit 85, a humidification control unit 86, and a compressor control unit 87 are provided. The air conditioner control device 2b is composed of a microprocessor, various sensors, and other control devices.

風量制御部８４は、空調機１ｂの第２送風機７４の回転数と、第４ダンパ７１のダンパ開度と、第５ダンパ７２のダンパ開度と、第６ダンパ７３のダンパ開度と、を制御して外気、還気及び給気の各風量を調整するように構成する。水量制御部８５は、第３水量調整弁６８を制御して第３熱交換器６２及び第５熱交換器６４の循環水の各流通量を調整するように構成する。加湿制御部８６は、第４加湿器６９の蒸気発生量を制御して空調用空気への加湿量を調整するように構成する。圧縮機制御部８７は、圧縮機７６の回転数を制御して冷却又は加熱する能力を調整するように構成する。 The air volume control unit 84 includes the rotational speed of the second blower 74 of the air conditioner 1b, the damper opening degree of the fourth damper 71, the damper opening degree of the fifth damper 72, and the damper opening degree of the sixth damper 73. It controls to adjust each air volume of outside air, return air, and charge air. The water amount control unit 85 is configured to control the third water amount adjusting valve 68 to adjust the circulation amounts of the circulating water of the third heat exchanger 62 and the fifth heat exchanger 64. The humidification control unit 86 controls the amount of steam generated by the fourth humidifier 69 to adjust the amount of humidification to the air for air conditioning. The compressor control unit 87 is configured to control the number of rotations of the compressor 76 to adjust the ability to cool or heat.

この空調機１ｂで夏期に除湿が必要な冷房運転をする場合、外調機３の第１ヒートポンプ２０の第７熱交換器２５と第８熱交換器２７によって外気と排気を熱交換させて予冷した外気を、空調機１ｂへ供給する。空調機１ｂでは、外気を第３熱交換器６２で冷却除湿して、第４熱交換器６３で除湿せずに冷却した還気と混合することで生じる再熱効果で、目標の給気温度及び給気湿度に制御する。これにより、被空調空間Ｓを予め設定された温度及び湿度に空調する。 When the air conditioner 1b performs a cooling operation requiring dehumidification in summer, the seventh heat exchanger 25 and the eighth heat exchanger 27 of the first heat pump 20 of the external air conditioner 3 exchange heat between the outside air and the exhaust gas to perform precooling Outside air is supplied to the air conditioner 1b. In the air conditioner 1b, the target air supply temperature is achieved by the reheat effect generated by cooling and dehumidifying the outside air with the third heat exchanger 62 and mixing with the cooled return air without dehumidifying with the fourth heat exchanger 63. And control to the air supply humidity. Thereby, the air-conditioned space S is air-conditioned to a preset temperature and humidity.

冬期に暖房運転する場合、外調機３の第１ヒートポンプ２０の第７熱交換器２５と第８熱交換器２７によって外気と排気を熱交換させて予熱した外気を、空調機１ｂへ供給する。空調機１ｂでは、外気を第３熱交換器６２で加熱して第４加湿器６９で加湿し、還気を第４熱交換器６３で加熱して、混合することで給気の温度及び湿度を制御する。状況に応じて上述の冷房運転及び暖房運転時に、外調機３の混合ダンパ２３で、第１ヒートポンプ２０で冷却又は加熱される前の外気に被空調空間Ｓの空気を混合させて予冷又は予熱する。なお、外調機３で外気を予冷又は予熱せずに空調機１ｂで冷房運転又は暖房運転してもよい。 When the heating operation is performed in winter, outside air and heat are exchanged by the seventh heat exchanger 25 and the eighth heat exchanger 27 of the first heat pump 20 of the air conditioner 3 and the preheated outside air is supplied to the air conditioner 1b. . In the air conditioner 1b, the outside air is heated by the third heat exchanger 62 and is humidified by the fourth humidifier 69, and the return air is heated by the fourth heat exchanger 63 and mixed, thereby mixing the temperature and humidity of the supplied air. Control. Depending on the situation, during the cooling operation and the heating operation described above, the mixing damper 23 of the external air conditioner 3 mixes the air of the air conditioned space S before being cooled or heated by the first heat pump 20 to perform precooling or preheating. Do. The air conditioner 1b may perform a cooling operation or a heating operation without precooling or preheating the outside air in the external air conditioner 3.

冬期に循環水が温水で冷房運転する場合、外調機３から空調機１ｂへ供給された外気を、第３熱交換器６２で冷房に適した温度まで加熱して第４加湿器６９で蒸気加湿する。還気は第２ヒートポンプ６５の第４熱交換器６３で冷房に適した温度まで冷却又は加熱して、被空調空間Ｓに供給する。 When circulating water is cooled by hot water in the winter, the outside air supplied from the outside air conditioner 3 to the air conditioner 1b is heated by the third heat exchanger 62 to a temperature suitable for cooling, and the steam by the fourth humidifier 69 Humidify. The return air is cooled or heated to a temperature suitable for cooling by the fourth heat exchanger 63 of the second heat pump 65, and is supplied to the conditioned space S.

図７は複数の空調機１のうち第３の空調機１ｃを示している。この第３の空調機１ｃは、第６熱交換器９４、第４水路９５、第４水量調整弁９６、第５加湿器９７、第７ダンパ９８、第８ダンパ９９、第３送風機１００及びケーシング１０１を備えている。図例では第６熱交換器９４、第５加湿器９７及び第３送風機１００をケーシング１０１内に設けているが、空調機制御装置２ｃ、第４水路９５、第４水量調整弁９６、第７ダンパ９８及び第８ダンパ９９もケーシング１０１内に設けてもよい。 FIG. 7 shows the third air conditioner 1 c among the plurality of air conditioners 1. The third air conditioner 1c includes a sixth heat exchanger 94, a fourth water passage 95, a fourth water amount adjustment valve 96, a fifth humidifier 97, a seventh damper 98, an eighth damper 99, a third blower 100, and a casing. It has 101. Although the sixth heat exchanger 94, the fifth humidifier 97 and the third blower 100 are provided in the casing 101 in the illustrated example, the air conditioner control device 2c, the fourth water channel 95, the fourth water amount adjustment valve 96, the seventh The damper 98 and the eighth damper 99 may also be provided in the casing 101.

第６熱交換器９４は、循環水の流通で空調用空気の外気と還気を冷却又は加熱する第５処理を行うように構成する。第４水路９５は、循環水を第６熱交換器９４に流通させるように水配管を設けて構成する。第４水量調整弁９６は、循環水の流通量を変動させて第６熱交換器９４の冷却又は加熱する能力を調整するように水量比例変動方式の二方弁で構成する。 The sixth heat exchanger 94 is configured to perform a fifth process of cooling or heating the outside air and the return air of the air conditioning air in circulation of the circulating water. The fourth water channel 95 is configured by providing a water pipe so as to circulate circulating water to the sixth heat exchanger 94. The fourth water amount adjustment valve 96 is configured by a two-way valve of a water amount proportional variation method so as to adjust the cooling or heating ability of the sixth heat exchanger 94 by changing the circulation amount of circulating water.

第５加湿器９７は、第６熱交換器９４の風下で空調用空気を蒸気で加湿する蒸気式とする。第７ダンパ９８は、第３の空調機１ｃに取入れる空調用空気の外気量を増減調整する。第８ダンパ９９は、第３の空調機１ｃに取入れる空調用空気の還気量を増減調整する。第３送風機１００は、被空調空間Ｓへの空調用空気の給気量を増減調整する。第３送風機１００によって、第７ダンパ９８から取入れられた外気と第８ダンパ９９から取入れられた還気は互いに混ざり合って第６熱交換器９４を通って被空調空間Ｓへ送られる。第７ダンパ９８から取入れられる外気量は、被空調空間Ｓの二酸化炭素濃度が予め設定された範囲になるように調整される。 The fifth humidifier 97 is a steam type that humidifies the air-conditioning air with steam under the wind of the sixth heat exchanger 94. The seventh damper 98 increases / decreases the amount of outside air of the air conditioning air introduced into the third air conditioner 1c. The eighth damper 99 increases / decreases the return air amount of the air-conditioning air introduced into the third air conditioner 1c. The third fan 100 increases or decreases the air supply amount of the air for air conditioning to the air conditioned space S. The outside air taken in from the seventh damper 98 and the return air taken in from the eighth damper 99 are mixed with each other by the third fan 100 and are sent to the air conditioned space S through the sixth heat exchanger 94. The amount of outside air introduced from the seventh damper 98 is adjusted so that the carbon dioxide concentration in the conditioned space S falls in a preset range.

第３の空調機１ｃの空調機制御装置２ｃは、外気の温度及び湿度を検出する外気温湿度検出器１０２、還気の温度及び湿度を検出する還気温湿度検出器１０３、空調機１ｃの給気の温度及び湿度を検出する給気温湿度検出器１０４、風量制御部１０５、水量制御部１０６、加湿制御部１０７及び第５外気冷房運転部１０８を備えている。空調機制御装置２ｃはマイクロプロセッサ、各種センサー、その他の制御機器で構成する。 The air conditioner controller 2c of the third air conditioner 1c detects the temperature and humidity of the outside air, the outside air temperature and humidity detector 102, the return air temperature and humidity detector 103, and the air conditioner 1c. An air supply temperature / humidity detector 104 for detecting air temperature and humidity, an air flow control unit 105, a water amount control unit 106, a humidification control unit 107, and a fifth outside air cooling operation unit 108 are provided. The air conditioner control device 2c is composed of a microprocessor, various sensors, and other control devices.

風量制御部１０５は、空調機１ｃの第３送風機１００の回転数と、第７ダンパ９８のダンパ開度と、第８ダンパ９９のダンパ開度と、を制御して外気、還気及び給気の各風量を調整するように構成する。水量制御部１０６は、第４水量調整弁９６の弁開度を制御して第６熱交換器９４の循環水の流通量を調整するように構成する。加湿制御部１０７は、第５加湿器９７の蒸気発生量を制御して外気及び還気への加湿量を調整するように構成する。 The air volume control unit 105 controls the number of rotations of the third fan 100 of the air conditioner 1c, the damper opening degree of the seventh damper 98, and the damper opening degree of the eighth damper 99 to control outside air, return air and air supply. Configure to adjust the volume of each air flow. The water amount control unit 106 is configured to control the valve opening degree of the fourth water amount adjusting valve 96 to adjust the circulation amount of the circulating water of the sixth heat exchanger 94. The humidification control unit 107 is configured to control the amount of steam generated by the fifth humidifier 97 to adjust the amount of humidification to the outside air and the return air.

第５外気冷房運転部１０８は、外気温湿度検出器１０２で検出された第５処理前の空調用空気の温度が還気温湿度検出器１０３で検出された被空調空間Ｓの温度より低い場合に空調用空気を利用して被空調空間Ｓを冷房するように構成する。冬期に循環水が温水で冷房運転する場合、被空調空間Ｓの温度より低温の外気を外調機３から空調機１ａに供給する。この外気と還気を第６熱交換器９４で加熱して冷房に適した温度にし、第５加湿器９７で蒸気加湿して、被空調空間Ｓに供給する。 When the temperature of the air conditioning air before the fifth processing detected by the outside air temperature and humidity detector 102 is lower than the temperature of the air conditioned space S detected by the return air temperature and humidity detector 103, the fifth outside air cooling operation unit 108 The air-conditioned space S is cooled using air conditioning air. When the circulating water performs cooling operation with warm water in the winter, outside air having a temperature lower than the temperature of the air-conditioned space S is supplied from the external conditioner 3 to the air conditioner 1a. The outside air and the return air are heated by the sixth heat exchanger 94 to a temperature suitable for cooling, and are steam-humidified by the fifth humidifier 97 and supplied to the conditioned space S.

なお、本発明は上述の実施例に限定されない。熱源機５は、ヒートポンプ式チラーや吸収式など各種のものが適用可能である。外調機３、混合ダンパ２３、第３ダンパ４５、第６ダンパ７３は省略してもよい。第１水量調整弁３９、第２水量調整弁４０、第３水量調整弁６８及び第４水量調整弁９６は二方弁や三方弁以外でもよい。上述の実施例の説明において空調用空気の外気を還気と、還気を外気と、各々読替えて構成したものとするも自由である。 The present invention is not limited to the above-described embodiment. The heat source unit 5 is applicable to various types such as a heat pump type chiller and an absorption type. The external air conditioner 3, the mixing damper 23, the third damper 45, and the sixth damper 73 may be omitted. The first water amount adjusting valve 39, the second water amount adjusting valve 40, the third water amount adjusting valve 68, and the fourth water amount adjusting valve 96 may be other than the two-way valve or the three-way valve. In the description of the above-described embodiment, the outside air of the air conditioning air may be replaced with the return air, and the return air may be replaced with the outside air.

また、第１加湿器４１、第２加湿器４２、第３加湿器４８、第４加湿器６９及び第５加湿器９７の一部又は全部を、気化式加湿器と蒸気式加湿器を両方有するもので構成してもよい。たとえば、空調用空気に対して、先ずエネルギー消費の少ない気化式加湿器で加湿し、気化式加湿器で加湿不足となる場合には、その不足分のみを蒸気加湿器で最低限加湿することで、加湿精度向上と消費エネルギー削減の両立を図れる。水循環配管８はダイレクトレターン方式、リバースレターン方式やこれらの併用方式など各種の方式に変更自由である。 Moreover, it has both a vaporization type humidifier and a steam type humidifier, as part or all of the first humidifier 41, the second humidifier 42, the third humidifier 48, the fourth humidifier 69 and the fifth humidifier 97. It may consist of things. For example, the air conditioning air is first humidified by the vaporization type humidifier with low energy consumption, and when the humidification by the vaporization type humidifier is insufficient, only the shortage is humidified by the steam humidifier as a minimum. , Both humidification accuracy improvement and consumption energy reduction can be achieved. The water circulation pipe 8 can be freely changed to various methods such as a direct return method, a reverse return method, and a combination method thereof.

本発明の空気調和システムの全体構成を示す説明図である。It is explanatory drawing which shows the whole structure of the air conditioning system of this invention. 外調機の内部構成を示す簡略説明図である。FIG. 2 is a simplified explanatory view showing an internal configuration of an external air conditioner. 第１の空調機の内部構成を示す簡略説明図である。It is a simplification explanatory view showing the internal configuration of the 1st air conditioner. 熱交換器の簡略説明図である。It is a simplified explanatory view of a heat exchanger. 第１の空調機の他の実施例を示す簡略説明図である。It is a simplification explanatory view showing other examples of the 1st air conditioner. 第２の空調機の内部構成を示す簡略説明図である。It is a simplification explanatory view showing the internal configuration of the 2nd air conditioner. 第３の空調機の内部構成を示す簡略説明図である。It is a simplification explanatory view showing the internal configuration of the 3rd air conditioner.

１空調機
２空調機制御装置
３外調機
５熱源機
６水循環機器
７熱源機制御装置
１６熱源機出力補償部
２０第１ヒートポンプ
３５第１熱交換器
３６第２熱交換器
３７第１水路
３８バイパス水路
３９第１水量調整弁
４０第２水量調整弁
４１第１加湿器
４２第２加湿器
４６第１送風機
４８第３加湿器
５６第１外気冷房運転部
５７第１冷房能力補償部
５８第１空調能力補償部
５９第１空調能力制御部
６０第２外気冷房運転部
６２第３熱交換器
６３第４熱交換器
６４第５熱交換器
６５第２ヒートポンプ
６６第２水路
６７第３水路
６８第３水量調整弁
６９第４加湿器
７４第２送風機
７６圧縮機
９４第６熱交換器
９５第４水路
９６第４水量調整弁
９７第５加湿器
１００第３送風機
１０８第５外気冷房運転部
Ｓ被空調空間 DESCRIPTION OF SYMBOLS 1 air conditioner 2 air conditioner control device 3 external air conditioner 5 heat source device 6 water circulation device 7 heat source device control device 16 heat source device output compensation part 20 1st heat pump 35 1st heat exchanger 36 2nd heat exchanger 37 1st waterway 38 Bypass water passage 39 1st water amount adjustment valve 40 2nd water amount adjustment valve 41 1st humidifier 42 2nd humidifier 46 1st blower 48 3rd humidifier 56 1st outside air cooling operation part 57 1st cooling capacity compensation part 58 1st Air conditioning capacity compensation unit 59 1st air conditioning capacity control unit 60 2nd outside air cooling operation unit 62 3rd heat exchanger 63 4th heat exchanger 64 5th heat exchanger 65 2nd heat pump 66 2nd water channel 67 3rd water channel 68 3 Water Volume Adjustment Valve 69 Fourth Humidifier 74 Second Blower 76 Compressor 94 Sixth Heat Exchanger 95 Fourth Channel 96 Fourth Water Volume Adjustment Valve 97 Fifth Humidifier 100 Third Blower 108 Fifth Air Cooling System Department S the air-conditioned space

Claims

空調用空気を被空調空間（Ｓ）に供給して冷房又は暖房する複数の空調機（１）と、複数の前記空調機（１）のうちの第１の空調機（１ａ）を制御して前記空調用空気を前記冷房又は前記暖房に適した空気状態に調整する第１の空調機制御装置（２ａ）と、前記空調用空気の空気状態の調整のために前記空調機（１）に供給される循環水の供給水温を調整する熱源機（５）と、前記第１空調機制御装置（２ａ）から独立した制御装置であって前記熱源機（５）を制御して前記循環水を外気負荷の状態に応じた前記供給水温に切換える熱源機制御装置（７）と、を備え、
前記熱源機制御装置（７）が、前記被空調空間（Ｓ）の冷房時において予め設定した外気温度及び外気湿度に対して外気が高温高湿、低温高湿、高温低湿又は低温低湿のいずれかの場合に前記供給水温を前記高温高湿のときは６〜７℃に、前記低温高湿のときは７〜８℃に、前記高温低湿のときは８〜９℃に、前記低温低湿のときは９〜１０℃に、それぞれ切換えると共に前記被空調空間Ｓの暖房時において予め設定した外気温度に対して前記外気が高温又は低温の場合に前記供給水温を前記高温のときは３４〜３６℃に、前記低温のときは３９〜４１℃に、それぞれ切換える供給水温制御部（１５）を、備え、
前記第１空調機（１ａ）が、前記循環水の流通で前記空調用空気を冷却又は加熱する第１処理を行う第１熱交換器（３５）と、前記循環水の流通で前記空調用空気を冷却又は加熱する第２処理を行う第２熱交換器（３６）と、前記第１処理後の前記空調用空気と前記第２処理後の前記空調用空気を前記被空調空間（Ｓ）へ供給する第１送風機（４６）と、前記循環水を前記第１熱交換器（３５）に流通させてから前記第２熱交換器（３６）に流通させる第１水路（３７）と、前記第１水路（３７）から分岐して前記第１処理後の前記循環水を前記第２熱交換器（３６）を通さずに迂回させるバイパス水路（３８）と、前記循環水の流通量を変動させて前記第１熱交換器（３５）の前記第１処理の能力を調整する第１水量調整弁（３９）と、前記第２熱交換器（３６）と前記バイパス水路（３８）の前記循環水の流通量の配分を変動させて前記第２熱交換器（３６）の前記第２処理の能力を調整する第２水量調整弁（４０）と、を備え、
前記第１空調機制御装置（２ａ）が、前記被空調空間（Ｓ）の空調負荷が大きければ前記第１処理と前記第２処理を両方行う運転に、前記被空調空間（Ｓ）の空調負荷が小さければ前記第１処理のみを行う運転に、切換えて前記被空調空間（Ｓ）を冷房又は暖房する能力を制御する第１空調能力制御部（５９）を、備えたことを特徴とする空気調和システム。 A plurality of air conditioners (1 ) for supplying air conditioning air to the air conditioned space (S) for cooling or heating, and a first air conditioner (1a) of the plurality of air conditioners (1) A first air conditioner controller (2a) for adjusting the air conditioning air to an air state suitable for the cooling or the heating, and supplying the air conditioner (1) for adjusting the air state of the air conditioning air Heat source machine (5) for adjusting the temperature of the supplied circulating water, and a control device independent of the first air conditioner controller (2a), controlling the heat source machine (5) to control the circulating water to the outside air A heat source unit controller (7) for switching to the supplied water temperature according to the state of load;
The heat source controller (7) is any of high temperature and high humidity, low temperature and high humidity, high temperature and low humidity, or low temperature and low humidity with respect to the outside air temperature and the outdoor air humidity preset at the time of cooling of the air conditioned space (S). In the case of the low temperature and low humidity, the supplied water temperature is 6 to 7 ° C. for the high temperature and high humidity, 7 to 8 ° C. for the low temperature and high humidity, and 8 to 9 ° C. for the high temperature and low humidity. Changes the temperature to 9 to 10 ° C., and the supplied water temperature to 34 to 36 ° C. when the outside air temperature is high or low relative to the preset outside air temperature when heating the air conditioned space S And a supply water temperature control unit (15) for switching to 39 to 41 ° C. when the temperature is low,
A first heat exchanger (35) for performing a first treatment in which the first air conditioner (1a) cools or heats the air conditioning air in the circulation of the circulating water; and the air conditioning air in the circulation of the circulating water A second heat exchanger (36) for performing a second process of cooling or heating the air-conditioning air after the first process and the air-conditioning air after the second process to the air-conditioned space (S) A first fan (46) for supplying, a first water channel (37) for circulating the circulating water to the first heat exchanger (35) and then circulating to the second heat exchanger (36); A bypass water passage (38) branched from one water passage (37) and diverting the circulating water after the first treatment without passing through the second heat exchanger (36), and fluctuating the circulation amount of the circulating water A first water control valve (39) for adjusting the capacity of the first process of the first heat exchanger (35); The second amount of water for adjusting the capacity of the second process of the second heat exchanger (36) by varying the distribution of the circulating amount of the circulating water of the second heat exchanger (36) and the bypass water channel (38) And a control valve (40),
The air conditioning load of the air conditioned space (S) in the operation where the first air conditioner controller (2a) performs both the first process and the second process if the air conditioning load of the air conditioned space (S) is large If the air conditioner is small, the air conditioning system is provided with a first air conditioning capacity control unit (59) for controlling the ability to cool or heat the air conditioned space (S) by switching to an operation in which only the first process is performed. Harmonized system.

循環水を循環させる水循環機器（６）を備え、熱源機制御装置（７）が、空調機（１）への供給で生じる循環水の水温差が予め設定した水温差の範囲内を外れると前記水循環機器（６）を制御して前記循環水の水速を調整することで熱源機出力の過不足を補償する熱源機出力補償部（１６）を、備えた請求項１に記載の空気調和システム。 A water circulation device (6) for circulating circulating water is provided, and when the heat source controller (7) causes the water temperature difference of the circulating water generated by the supply to the air conditioner (1) to fall outside the preset water temperature difference range. The air conditioning system according to claim 1, further comprising a heat source unit output compensation unit (16) that compensates for excess or deficiency of the heat source unit output by controlling a water circulation unit (6) to adjust the water speed of the circulating water. .

第１ヒートポンプ（２０）を有すると共に空調用空気と被空調空間（Ｓ）の空気とを前記第１ヒートポンプ（２０）で熱交換させることで前記空調用空気を予冷又は予熱して空調機（１）へ供給する外調機（３）を、備えた請求項１又は２に記載の空気調和システム。 An air conditioner (1) is provided with a first heat pump (20) and heat exchange between the air for air conditioning and the air in the air conditioned space (S) by the first heat pump (20) to precool or preheat the air for air conditioning (1 The air conditioning system according to claim 1 or 2, further comprising an external air conditioner (3) for supplying the air conditioner.

第１空調機（１ａ）が、第１熱交換器（３５）の風下で空調用空気を水の気化蒸発で加湿する気化式の第１加湿器（４１）と、第２熱交換器（３６）の風下で前記空調用空気を水の気化蒸発で加湿する気化式の第２加湿器（４２）と、を備えた請求項１から３のいずれかに記載の空気調和システム。 A vaporization type first humidifier (41) in which the first air conditioner (1a) humidifies air conditioning air by evaporation of water under the wind of the first heat exchanger (35), and a second heat exchanger (36) The air conditioning system according to any one of claims 1 to 3 , further comprising: a vaporization type second humidifier (42) for humidifying the air conditioning air by evaporation of water under the wind of the air) .

第１空調機（１ａ）が、第１熱交換器（３５）と第２熱交換器（３６）の一方又は両方の風下で空調用空気を蒸気で加湿する蒸気式の第３加湿器（４８）を備え、第１空調機制御装置（２ａ）が、第１処理前の前記空調用空気と第２処理前の前記空調用空気の一方又は両方の温度が前記被空調空間（Ｓ）の温度より低い場合に前記空調用空気を利用して前記被空調空間（Ｓ）を冷房する第２外気冷房運転部（６０）を、備えた請求項１から３のいずれかに記載の空気調和システム。 A steam-type third humidifier (48) in which the first air conditioner (1a) humidifies the air conditioning air with steam under the wind of one or both of the first heat exchanger (35) and the second heat exchanger (36). And the first air conditioner controller (2a) controls the temperature of the air conditioned space (S) at one or both of the air conditioning air before the first treatment and the air conditioning air before the second treatment. The air conditioning system according to any one of claims 1 to 3, further comprising a second outside air cooling operation unit (60) for cooling the air conditioned space (S) by using the air conditioning air when the air conditioning air temperature is lower .

第１空調機制御装置（２ａ）が、第１処理に要する第１処理時エンタルピーと第２処理に要する第２処理時エンタルピーとを比較して前記エンタルピーが小さい処理の空調用空気の風量を多くして前記第１空調機（１ａ）の空調負荷を下げる第１空調能力補償部（５８）を、備えた請求項１から５のいずれかに記載の空気調和システム。 The first air conditioner control device (2a) compares the first process enthalpy required for the first process with the second process enthalpy required for the second process, thereby increasing the air volume of the air conditioning air process having a small enthalpy. The air conditioning system according to any one of claims 1 to 5, further comprising a first air conditioning capacity compensator (58) for reducing the air conditioning load of the first air conditioner (1a) .

複数の空調機（１）のうちの第２の空調機（１ｂ）が、循環水の流通で空調用空気を冷却又は加熱する第３処理を行う第３熱交換器（６２）と、冷媒の流通で前記空調用空気を冷却又は加熱する第４処理を行う第４熱交換器（６３）と、前記冷媒と前記循環水を熱交換する第５熱交換器（６４）と、前記第４処理の冷却と加熱を切換えて前記第４処理の能力を調整するように構成された前記第４熱交換器（６３）と前記第５熱交換器（６４）と圧縮機（７６）とを有する第２ヒートポンプ（６５）と、前記第３処理後の前記空調用空気と前記第４処理後の前記空調用空気を被空調空間（Ｓ）へ供給する第２送風機（７４）と、前記第３処理前の前記循環水を前記第３熱交換器（６２）に流通させる第２水路（６６）と、前記第２水路（６６）から分岐して前記第３処理前の前記循環水を前記第５熱交換器（６４）に流通させる第３水路（６７）と、前記第２水路（６６）と前記第３水路（６７）の前記循環水の流通量の配分を変動させて前記第３熱交換器（６２）の前記第３処理の能力を調整する第３水量調整弁（６８）と、を備えた請求項１から６のいずれかに記載の空気調和システム。 A third heat exchanger (62) for performing a third process in which a second air conditioner (1b) among the plurality of air conditioners (1) cools or heats air for air conditioning in circulation of circulating water; A fourth heat exchanger (63) that performs a fourth process of cooling or heating the air conditioning air in circulation, a fifth heat exchanger (64) that exchanges heat between the refrigerant and the circulating water, and the fourth process A fourth heat exchanger (63), a fifth heat exchanger (64), and a compressor (76) configured to switch the cooling and heating of the second to adjust the capacity of the fourth process 2 heat pump (65), second air blower (74) for supplying the air conditioning air after the third treatment and the air conditioning air after the fourth treatment to the air conditioned space (S), and the third treatment A second water channel (66) for circulating the previous circulating water to the third heat exchanger (62), and the second water channel (66) Of the second water channel (66) and the third water channel (67), and the third water channel (67) which is branched to circulate the circulating water before the third treatment to the fifth heat exchanger (64). The third water amount adjusting valve (68) for adjusting the capacity of the third process of the third heat exchanger (62) by varying the distribution of the circulating amount of the circulating water The air conditioning system as described in any one .