JP3243729B2 - Central heat source type air conditioner - Google Patents
Central heat source type air conditionerInfo
- Publication number
- JP3243729B2 JP3243729B2 JP19249194A JP19249194A JP3243729B2 JP 3243729 B2 JP3243729 B2 JP 3243729B2 JP 19249194 A JP19249194 A JP 19249194A JP 19249194 A JP19249194 A JP 19249194A JP 3243729 B2 JP3243729 B2 JP 3243729B2
- Authority
- JP
- Japan
- Prior art keywords
- heat source
- hot water
- cold
- air conditioner
- source device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Devices For Blowing Cold Air, Devices For Blowing Warm Air, And Means For Preventing Water Condensation In Air Conditioning Units (AREA)
- Central Air Conditioning (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、オフィスビル等の建物
に好適に使用される中央熱源式空調装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a central heat source type air conditioner suitably used for buildings such as office buildings.
【０００２】[0002]
【従来の技術】中央熱源式空調装置は、中央熱源装置か
らビルの各フロアに設置された空調機に冷水又は温水を
シーズン毎に切り換えて供給する方式である。この方式
において、各フロアの一台の空調機から複数の室に供給
する系統を取り出し、それぞれを系統毎の室内負荷変動
に合わせて室内温度を制御する場合、従来の技術では空
調機を構成している冷却コイル又は加熱コイルにより、
シーズン毎に冷却又は加熱してねらいの温度に制御され
た空気量を系統毎に変化させたり、コイルでねらいの温
度に制御された空気とコイルをバイパスした空気を室内
負荷変動に応じてその混合比を変化させて供給する方式
が採用されている。2. Description of the Related Art A central heat source type air conditioner is a system in which cold water or hot water is switched and supplied to an air conditioner installed on each floor of a building from a central heat source device every season. In this method, when a system to be supplied to a plurality of rooms is taken out from one air conditioner on each floor, and the room temperature is controlled according to the indoor load fluctuation of each system, the air conditioner is configured by the conventional technology. Cooling or heating coil
The amount of air controlled to the target temperature by cooling or heating every season is changed for each system, or the air controlled to the target temperature by the coil and the air bypassing the coil are mixed according to the indoor load fluctuation. A system in which the ratio is supplied while changing is adopted.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、上記従
来の方式においては、温度制御を比例制御で行う必要性
から高品質な温度制御が必要になり結果的に設備コスト
を押し上げるという問題を有している。又、冷水、温水
の製造がシーズン毎に切り換えられて供給されている場
合、冬期に一台の空調機の供給範囲で冷房要求系統と暖
房要求系統が同時に出現すると、冷房要求系統の温度制
御が不可能となり、室温が成りゆきまかせになると共に
熱回収運転による省エネルギー運転も不可能であった。However, in the above-mentioned conventional method, there is a problem that high-quality temperature control is required due to the necessity of performing the temperature control by proportional control, and as a result, equipment cost is increased. I have. Further, when the production of cold water and hot water is switched and supplied in each season, if a cooling request system and a heating request system simultaneously appear in the supply range of one air conditioner in winter, the temperature control of the cooling request system is performed. It became impossible, the room temperature was gradually increased, and energy saving operation by heat recovery operation was impossible.
【０００４】本発明は、上記従来の問題を解決するもの
であって、中央熱源装置から冷温水コイルに流れる冷温
水温度を外気条件に合わせて高めの温度に設定し、各空
調ゾーンの温度センサからの信号に基ずくオンオフ制御
により、各空調ゾーン用の蒸発器に冷媒を供給すること
により、温度制御を簡単化し且つ熱回収運転による省エ
ネルギー効果も期待でき、また、冷房時の時間外運転お
よび中間期の軽負荷運転時における中央熱源装置の運転
を不要とし、さらに、暖房時、空調ゾーン用の蒸発器を
冷房用として自由に利用することができる中央熱源式空
調装置を提供することを目的とするものである。The present invention solves the above-mentioned conventional problems, and sets the temperature of cold and hot water flowing from a central heat source device to a cold and hot water coil to a higher temperature in accordance with the outside air condition. By supplying the refrigerant to the evaporator for each air conditioning zone by ON / OFF control based on the signal from, the temperature control can be simplified and the energy saving effect by the heat recovery operation can be expected. An object of the present invention is to provide a central heat source type air conditioner that eliminates the need for operation of a central heat source device during a light load operation in the interim period, and that can freely use an evaporator for an air conditioning zone for cooling during heating. It is assumed that.
【０００５】[0005]
【課題を解決するための手段】そのために本発明の中央
熱源式空調装置は、建物の各階フロアに設置される空調
機１と、各空調機１に冷温水を循環させるための中央熱
源装置５と、空調機１に接続される複数の空調ゾーン９
と、各空調ゾーン９に配設される温度センサ１２と、空
調機１内に配設される冷温水コイル１５と、空調ゾーン
９別に配設される蒸発器２５と、空気を冷温水コイル１
５、蒸発器２５の順に各空調ゾーン９に循環させる送風
ファン１６と、各蒸発器２５に冷媒供給開閉弁２３を介
して接続される系統別温度調整用熱源機１９と、中央熱
源装置５で製造された冷温水を冷温水コイル１５および
系統別温度調整用熱源機１９に循環させる冷温水ポンプ
６とを備え、冷温水コイル１５の冷温水温度を外気条件
に合わせて高めの温度に設定し、各空調ゾーン９の温度
センサ１２からの信号に基ずくオンオフ制御により、冷
媒供給開閉弁２３を開閉し各蒸発器２５に冷媒を供給す
ることを特徴とする。なお、上記構成に付加した番号
は、本発明の理解を容易にするために図面と対比させる
ものであり、これにより本発明の構成が何ら限定される
ものではない。For this purpose, the central heat source type air conditioner of the present invention comprises an air conditioner 1 installed on each floor of a building and a central heat source device 5 for circulating cold and hot water through each air conditioner 1. And a plurality of air conditioning zones 9 connected to the air conditioner 1
A temperature sensor 12 disposed in each air conditioning zone 9, a cold / hot water coil 15 disposed in the air conditioner 1, an evaporator 25 disposed for each air conditioning zone 9,
5, a blower fan 16 that circulates through each air conditioning zone 9 in the order of the evaporators 25, a system-specific temperature adjusting heat source device 19 that is connected to each evaporator 25 via a refrigerant supply on-off valve 23, and a central heat source device 5. A cold / hot water pump 6 for circulating the produced cold / hot water through the cold / hot water coil 15 and the heat source unit 19 for temperature adjustment for each system; and setting the cold / hot water temperature of the cold / hot water coil 15 to a higher temperature in accordance with the outside air condition. The on / off control based on the signal from the temperature sensor 12 in each air conditioning zone 9 opens and closes the refrigerant supply on-off valve 23 to supply the refrigerant to each evaporator 25. Note that the numbers added to the above configuration are compared with the drawings to facilitate understanding of the present invention, and the configuration of the present invention is not limited by this.
【０００６】[0006]
【作用】本発明においては、供給される空気は、冷温水
コイルにおいて、予め何れの系統でも外気条件に合わせ
て設定された高めの温度の冷温水で冷却又は加熱された
後、系統別温度調整用の蒸発器で冷却された後、各空調
ゾーンに供給される。各蒸発器への冷媒供給は、各空調
ゾーンの温度センサからの信号に基ずくオンオフ制御に
より冷媒供給開閉弁を開閉して行われる。また、冷房時
の時間外運転、中間期の軽負荷運転時および系統別温度
調整用熱源機を冷房用熱源機として利用する場合、中央
熱源装置の熱源機を停止させ、系統別温度調整用熱源機
の排熱を中央熱源装置の冷却塔側の冷却水に放熱させ
て、系統別温度調整用熱源機の運転を可能にしている。According to the present invention, the supplied air is cooled or heated in a chilled / hot water coil with chilled / hot water of a higher temperature set in advance in any system according to the outside air condition, and then the temperature is adjusted for each system. After being cooled by the evaporator, it is supplied to each air conditioning zone. Refrigerant supply to each evaporator is performed by opening and closing a refrigerant supply opening / closing valve by on / off control based on a signal from a temperature sensor in each air conditioning zone. In addition, when the over-hour operation during cooling, the light load operation in the interim period, and the use of the system-specific temperature control heat source unit as the cooling heat source unit, the heat source unit of the central heat source device is stopped, and the system-specific temperature control heat source is used. The exhaust heat of the machine is radiated to the cooling water on the cooling tower side of the central heat source device to enable operation of the system-specific temperature adjusting heat source device.
【０００７】[0007]
【実施例】以下、本発明の実施例を図面を参照しつつ説
明する。図２は本発明の中央熱源式空調装置の１実施例
を示す全体構成図であり、本発明による空調機１は建物
の各階フロアに設置され、各空調機１は、冷温水供給管
２、冷温水戻り管３、外気供給ダクト４を介して中央熱
源装置５に接続されている。Embodiments of the present invention will be described below with reference to the drawings. FIG. 2 is an overall configuration diagram showing one embodiment of a central heat source type air conditioner of the present invention. An air conditioner 1 according to the present invention is installed on each floor of a building, and each air conditioner 1 is provided with a cold / hot water supply pipe 2, It is connected to a central heat source device 5 via a cold / hot water return pipe 3 and an outside air supply duct 4.
【０００８】図３は本発明の中央熱源式空調装置の１実
施例を示す中央熱源装置５と空調機１との関係を示す構
成図であり、冷温水供給管２は、ポンプ６および熱交換
器７を介して中央熱源装置５に接続されている。外気
は、送風機８により吸い込まれ熱交換器７で冷却または
加熱された後、外気供給ダクト４を経て空調機１に供給
される。この熱交換器７は、取り入れる外気の冷却除湿
又は加熱加湿の熱源として利用され、外気の湿度を調節
する湿度調節器の役割を果たしているが、必ずしも必須
のものではなく、空調機１側に加湿器を設けてもよい。FIG. 3 is a block diagram showing the relationship between the central heat source device 5 and the air conditioner 1 showing one embodiment of the central heat source type air conditioner of the present invention. The cold / hot water supply pipe 2 includes a pump 6 and a heat exchanger. It is connected to the central heat source device 5 via the vessel 7. The outside air is sucked by the blower 8 and cooled or heated by the heat exchanger 7, and then supplied to the air conditioner 1 through the outside air supply duct 4. The heat exchanger 7 is used as a heat source for cooling and dehumidifying or heating and humidifying the outside air to be taken in, and plays a role of a humidity controller for adjusting the humidity of the outside air. A vessel may be provided.
【０００９】中央熱源装置５で製造された冷温水は、冷
温水供給管２を経て空調機１に送られた後、冷温水戻り
管３を経て中央熱源装置５に環流される。空調機１は、
熱負荷が異なる複数の系統の空調ゾーン９に給気ダクト
１０および還気ダクト１１を介して接続されている。こ
れら空調ゾーン９は、仕切られた部屋あるいは特定の空
調すべき領域であり、空調ゾーン９には温度センサ１２
が配設されている。The cold / hot water produced by the central heat source device 5 is sent to the air conditioner 1 via the cold / hot water supply pipe 2 and then returned to the central heat source device 5 via the cold / hot water return pipe 3. Air conditioner 1
A plurality of air conditioning zones 9 having different heat loads are connected via an air supply duct 10 and a return air duct 11. The air-conditioning zones 9 are partitioned rooms or specific areas to be air-conditioned.
Are arranged.
【００１０】図１は、本発明の中央熱源式空調装置の１
実施例を示し、各フロアに設置される空調機１の構成図
である。空調機１は基本的に、ケーシング１３、中央熱
源装置５に接続される冷温水コイル１５、複数の送風フ
ァン１６、フィルタ１７および系統別温度調整用熱源機
１９から構成されている。系統別温度調整用熱源機１９
は、圧縮機２０、凝縮器２１、冷媒液溜２２を有し、こ
れらに複数の冷媒供給開閉弁２３、膨張弁２４、および
蒸発器２５が並列に配管接続されている。各蒸発器２５
は冷温水コイル１５の下流側に配設されている。ケーシ
ング１３の各蒸発器２５に対向する位置には、図３で説
明した複数の系統の空調ゾーン９に空調エアを供給する
給気ダクト１０が接続されている。FIG. 1 shows a central heat source type air conditioner of the present invention.
BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a configuration diagram of an air conditioner 1 installed on each floor according to an embodiment. The air conditioner 1 basically includes a casing 13, a cold / hot water coil 15 connected to the central heat source device 5, a plurality of blower fans 16, a filter 17, and a system-specific temperature adjusting heat source device 19. Heat source unit 19 for temperature adjustment by system
Has a compressor 20, a condenser 21, and a refrigerant liquid reservoir 22, and a plurality of refrigerant supply opening / closing valves 23, an expansion valve 24, and an evaporator 25 are connected in parallel to these pipes. Each evaporator 25
Is disposed downstream of the cold / hot water coil 15. At a position facing each evaporator 25 of the casing 13, an air supply duct 10 that supplies air-conditioned air to the air-conditioning zones 9 of the plurality of systems described with reference to FIG. 3 is connected.
【００１１】中央熱源装置５の冷温水供給管２は、バイ
パス用切換弁２６、冷温水コイル１５、凝縮器２１を経
て冷温水戻り管３に接続されている。バイパス用切換弁
２６は、冷温水を冷温水コイル１５に対してバイパスさ
せる三方弁であり、また、冷温水コイル１５を出た冷温
水が凝縮器２１と熱交換されるように構成している。The cold / hot water supply pipe 2 of the central heat source device 5 is connected to the cold / hot water return pipe 3 via the bypass switching valve 26, the cold / hot water coil 15, and the condenser 21. The bypass switching valve 26 is a three-way valve that allows cold and hot water to bypass the cold and hot water coil 15, and is configured so that the cold and hot water that has exited the cold and hot water coil 15 exchanges heat with the condenser 21. .
【００１２】図４は本発明の中央熱源式空調装置の１実
施例を示す中央熱源装置５の構成図である。熱源機であ
る吸収式冷温水発生機３０と、吸収式冷温水発生機３０
に冷房時、冷却水を循環させるための冷却塔３１および
冷却水ポンプ３２と、吸収式冷温水発生機３０からの冷
温水を空調機１に循環させるための冷温水ポンプ６と、
冷却水と冷温水を熱交換させるための熱交換器３４と、
冷却水が熱交換器３４をバイパスするためのバイパス用
切換弁３５と、冷温水戻り管３の冷温水を直接、冷温水
ポンプ６側に供給し冷温水供給管２の冷温水温度を制御
するための温度調整弁３６とから構成されている。な
お、吸収式冷温水発生機３０の熱源としては、ガス、石
油、蒸気が採用される。FIG. 4 is a configuration diagram of a central heat source device 5 showing one embodiment of the central heat source type air conditioner of the present invention. Absorption type cold / hot water generator 30 as a heat source device, and absorption type cold / hot water generator 30
A cooling tower 31 and a cooling water pump 32 for circulating cooling water during cooling, a cold and hot water pump 6 for circulating cold and hot water from the absorption type cold and hot water generator 30 to the air conditioner 1,
A heat exchanger 34 for exchanging heat between the cooling water and the cold / hot water;
The switching valve 35 for the cooling water to bypass the heat exchanger 34 and the cold / hot water of the cold / hot water return pipe 3 are supplied directly to the cold / hot water pump 6 to control the cold / hot water temperature of the cold / hot water supply pipe 2. And a temperature control valve 36 for the purpose. In addition, as a heat source of the absorption-type cold / hot water generator 30, gas, oil, or steam is adopted.
【００１３】次に、上記構成からなる本発明の運転制御
方法を図５をも参照しつつ説明する。図５は本発明の制
御方法の１例を説明するための図であり、制御は外気温
度に応じて冷温水コイル１５に流れる送水温度を設定
し、冷房および暖房のフリークーリング（自動運転）の
制御を行う。Next, the operation control method of the present invention having the above-described configuration will be described with reference to FIG. FIG. 5 is a diagram for explaining an example of the control method of the present invention. In the control, the water supply temperature flowing through the cold / hot water coil 15 is set in accordance with the outside air temperature, and free cooling (automatic operation) for cooling and heating is performed. Perform control.
【００１４】（冷房時）中央熱源装置５側においては、
冷却水ポンプ３２が駆動され、冷却塔３１により冷却さ
れた冷却水が吸収式冷温水発生機３０を循環し冷水製造
時の排熱を大気に放出する。吸収式冷温水発生機３０で
製造された冷水は温度調整弁３６により所定の温度を維
持され、冷温水ポンプ６により空調機１の冷温水コイル
１５を経て系統別温度調整用熱源機１９の凝縮器２１に
供給される。このとき、バイパス用切換弁３５は冷却水
が熱交換器３４に供給しないようにしている。(During cooling) On the central heat source device 5 side,
The cooling water pump 32 is driven, and the cooling water cooled by the cooling tower 31 circulates through the absorption-type cold / hot water generator 30 and discharges waste heat during cold water production to the atmosphere. The chilled water produced by the absorption type chilled / hot water generator 30 is maintained at a predetermined temperature by the temperature control valve 36, and is condensed by the chilled / hot water pump 6 through the chilled / hot water coil 15 of the air conditioner 1 to the system-specific temperature adjusting heat source device 19. Is supplied to the vessel 21. At this time, the bypass switching valve 35 prevents the cooling water from being supplied to the heat exchanger 34.
【００１５】空調機１側においては、送風機１６が運転
され、空調ゾーン９の還気ダクト１１からの還気と外気
供給ダクト４からの取り入れ外気とが混合してフィルタ
１７を経て冷温水コイル１５に圧送される。圧送された
空気は、冷温水コイル１５において、予め何れの系統で
も過冷却にならないように外気条件に合わせて設定され
た高めの温度の冷水で一時冷却された後、系統別温度調
整用熱源機１９の各蒸発器２５で二次冷却された後、各
空調ゾーン９に供給される。On the side of the air conditioner 1, the blower 16 is operated, and the return air from the return air duct 11 of the air conditioning zone 9 and the outside air taken in from the outside air supply duct 4 are mixed and passed through the filter 17 to form the cold / hot water coil 15. To be pumped. The pressure-fed air is temporarily cooled in a cold / hot water coil 15 with cold water of a higher temperature set in advance according to the outside air condition so as not to be overcooled in any of the systems, and then the heat source device for temperature adjustment for each system is used. After the secondary cooling in each of the 19 evaporators 25, it is supplied to each air conditioning zone 9.
【００１６】各蒸発器２５への冷媒供給は、各空調ゾー
ン９の温度センサ１２からの信号に基ずくオンオフ制御
により、冷媒供給開閉弁２３を開閉し、冷媒供給開閉弁
２３の開放数で生じる圧縮機２０の容量制御は圧縮機モ
ータの回転数制御で行われる。この回転数制御は、低圧
側圧力が一定の圧力以下にならず且つモータ出力がオー
バーロードしないように制御される。全ての冷媒供給開
閉弁２３が閉鎖されれば圧縮機２０は停止される。Refrigerant supply to each evaporator 25 is performed by opening and closing the refrigerant supply on-off valve 23 by on / off control based on a signal from the temperature sensor 12 of each air conditioning zone 9, and occurs at the number of open refrigerant supply on-off valves 23. The capacity control of the compressor 20 is performed by controlling the number of revolutions of the compressor motor. This rotation speed control is controlled so that the low pressure side pressure does not become lower than a certain pressure and the motor output does not overload. If all the refrigerant supply on-off valves 23 are closed, the compressor 20 is stopped.
【００１７】また、冷媒供給開閉弁２３の全てが閉鎖さ
れているにもかかわらず、還り空気が設定温度以下にな
った場合には、バイパス用切換弁２６を切り換えて冷水
が冷温水コイル１５を通過しないようにバイパスさせ
る。If the return air drops below the set temperature even though all of the refrigerant supply on-off valves 23 are closed, the bypass switching valve 26 is switched to allow the cold water to connect the cold / hot water coil 15. Bypass so as not to pass.
【００１８】冷房時の時間外運転および中間期の軽負荷
運転時には、中央熱源装置５の吸収式冷温水発生機３０
を停止させ、バイパス用切換弁３５を切り換え、冷却塔
３１からの冷却水を熱交換器３４に循環させ、凝縮器２
１の排熱を冷却塔３１側の冷却水に放熱させて、系統別
温度調整用熱源機１９の運転を可能にしている。During overtime operation during cooling and during light load operation in the interim period, the absorption type cold / hot water generator 30 of the central heat source device 5 is used.
Is stopped, the bypass switching valve 35 is switched, the cooling water from the cooling tower 31 is circulated to the heat exchanger 34, and the condenser 2
The exhaust heat of No. 1 is radiated to the cooling water on the side of the cooling tower 31 to enable the operation of the system-specific temperature adjusting heat source device 19.
【００１９】従って、冷房時には、空調機１に組み込ま
れた冷温水コイル１５が設計条件に対して例えば７０％
程度のベース負荷のみを制御弁なしで処理するので、冷
温水コイル１５の出口温度制御を省けると共に、冷温水
コイル１５に送る送水温度は、コイルの性能を変えずに
従来より著しく高めにセットすることができ、このため
中央熱源装置５の効率が製造温度の上昇で大きく改善さ
れる特性を考えると、系統別温度調整用の熱源機１９の
運転によるマイナス面を加味してもその省エネルギー効
果を増大させることができる。また、夏季時間外に冷房
を必要とする場合、各空調機１に搭載された系統別温度
調整用熱源機１９を運転することにより、吸収式冷温水
発生機３０を運転しなくても冷房が可能となる。これは
時間外の冷房負荷が昼間に比べて極端に小さいために、
温度調整用の熱源機で賄えるためであり、これによっ
て、時間外運転による消費エネルギーの計量が、消費電
力を計量することにより容易になり、且つ吸収式冷温水
発生機３０を運転する煩わしさから解放される。Therefore, at the time of cooling, the cold / hot water coil 15 incorporated in the air conditioner 1 is, for example, 70% of the design condition.
Only the base load of the degree is processed without a control valve, so that the outlet temperature control of the chilled / hot water coil 15 can be omitted, and the water supply temperature sent to the chilled / hot water coil 15 can be set to be significantly higher than before without changing the performance of the coil. Considering the characteristic that the efficiency of the central heat source device 5 is greatly improved by the increase of the production temperature, the energy saving effect can be reduced even if the negative side due to the operation of the heat source device 19 for temperature adjustment for each system is taken into consideration. Can be increased. In addition, when cooling is required outside of summer time, by operating the system-specific temperature adjusting heat source device 19 mounted on each air conditioner 1, cooling can be performed without operating the absorption-type cold / hot water generator 30. It becomes possible. This is because the cooling load after hours is extremely small compared to daytime,
This is because it can be covered by the heat source device for temperature adjustment, whereby the energy consumption due to the overtime operation is easily measured by measuring the power consumption, and the troublesome operation of the absorption-type cold / hot water generator 30 is avoided. To be released.
【００２０】（暖房時）中央熱源装置５側においては、
冷却水ポンプ３２が停止され、製造された温水は温度調
整弁３６により所定の温度を維持され、冷温水ポンプ６
により空調機１の冷温水コイル１５を経て凝縮器２１に
供給される。(At the time of heating) On the central heat source device 5 side,
The cooling water pump 32 is stopped, and the produced hot water is maintained at a predetermined temperature by the temperature control valve 36.
Is supplied to the condenser 21 through the cold / hot water coil 15 of the air conditioner 1.
【００２１】空調機１側において冷温水コイル１５に圧
送された空気は、冷温水コイル１５において、予め何れ
の系統でも外気条件に合わせて設定された高めの温度の
温水で加熱された後、系統別温度調整用の熱源機１９の
各蒸発器２５で冷却された後、各空調ゾーン９に供給さ
れる。このとき、系統別温度調整用熱源機１９の排熱
は、凝縮器２１を介して中央熱源装置５側の循環温水に
回収される。The air sent to the cold / hot water coil 15 on the air conditioner 1 side is heated in the cold / hot water coil 15 by hot water of a higher temperature set in advance in any system in accordance with the outside air condition. After being cooled in each evaporator 25 of the heat source unit 19 for another temperature adjustment, it is supplied to each air conditioning zone 9. At this time, the exhaust heat of the system-specific temperature adjusting heat source device 19 is recovered to the circulating hot water on the central heat source device 5 side via the condenser 21.
【００２２】各蒸発器２５への冷媒供給は、冷房時と同
様に各空調ゾーン９の温度センサ１２からの信号に基ず
くオンオフ制御により、冷媒供給開閉弁２３を開閉し、
圧縮機の制御は冷房時と同様に行われる。また、冷媒供
給開閉弁２３の全てが開放されているにもかかわらず、
還り空気が設定温度以上になった場合には、バイパス用
切換弁２６を切り換えて温水が冷温水コイル１５を通過
しないようにバイパスさせる。The supply of the refrigerant to each evaporator 25 is performed by on / off control based on a signal from the temperature sensor 12 in each air-conditioning zone 9 in the same manner as in the cooling, by opening and closing the refrigerant supply on-off valve 23.
Control of the compressor is performed in the same manner as during cooling. In addition, although all of the refrigerant supply on-off valves 23 are open,
When the return air temperature is equal to or higher than the set temperature, the bypass switching valve 26 is switched to bypass hot water so as not to pass through the cold / hot water coil 15.
【００２３】さらに、中央熱源装置５が温度センサの指
令により停止しているにもかかわらず、中央熱源装置５
からの送水温度より中央熱源装置５への還り水温度が系
統別温度調整用熱源機１９の稼働で過度に上昇した場
合、冷却水ポンプ３２を駆動しバイパス用切換弁３５を
切り換え、冷却塔３１からの冷却水を熱交換器３４に循
環させ、循環水温度の上昇を冷却塔３１側に放熱させて
冷却できるようにしている。従って、系統別温度調整用
熱源機１９を冷房用熱源機として自由に利用でき、この
ため部分的に発生する冷房負荷があってもその都度対応
できると共に、熱回収運転による省エネルギー効果も期
待できる。Further, although the central heat source device 5 is stopped by the command of the temperature sensor, the central heat source device 5
If the return water temperature to the central heat source device 5 excessively rises due to the operation of the system-specific temperature adjusting heat source device 19 from the water supply temperature from the cooling water, the cooling water pump 32 is driven to switch the bypass switching valve 35 to switch the cooling tower 31. Is circulated through the heat exchanger 34 so that the rise in the temperature of the circulating water is radiated to the cooling tower 31 so that the cooling water can be cooled. Therefore, the system-specific temperature adjusting heat source device 19 can be freely used as a cooling heat source device, and therefore, even if there is a partially generated cooling load, it is possible to cope with each case, and an energy saving effect by the heat recovery operation can be expected.
【００２４】以上、本発明の実施例について説明した
が、本発明は上記実施例に限定されるものではなく種々
の変形が可能である。例えば、上記実施例においては、
中央熱源装置５の熱源機として吸収式冷温水発生機３０
を採用しているが、必ずしもこれに限定されるものでは
なく電動圧縮式ヒートポンプでもよい。ただし、これま
で吸収式冷温水発生機の採用に難があった熱回収運転や
時間外運転等が本発明により容易になったことから、本
発明に吸収式冷温水発生機を採用すれば、電気以外のエ
ネルギー利用がしやすくなり、突出している冷房動力で
ある夏季の電力ピークを抑えることができ、また、夜間
の時間外冷房における熱源装置の運転が不要というメリ
ットから、オペレーション費用および熱量計測の問題も
なくなるという効果を有する。Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications are possible. For example, in the above embodiment,
Absorption type cold / hot water generator 30 as a heat source device of central heat source device 5
However, the present invention is not limited to this, and an electric compression heat pump may be used. However, since heat recovery operation and overtime operation, etc., which have been difficult to adopt the absorption type chilled / hot water generator, have been facilitated by the present invention, if the absorption type chilled / hot water generator is adopted in the present invention, Operation costs and calorie measurement have been made because it is easier to use energy other than electricity, it is possible to suppress the power peak in summer, which is a prominent cooling power, and it is not necessary to operate the heat source device during nighttime cooling. Has the effect of eliminating the problem of
【００２５】また、系統別温度調整用の熱源機１９をヒ
ートポンプにしてもよく、その場合には、暖房時、空調
ゾーン９に高めの空気を供給することができる。図５の
ＨＰはこの場合のヒートポンプ運転を意味している。Further, the heat source unit 19 for system-specific temperature adjustment may be a heat pump. In this case, high air can be supplied to the air conditioning zone 9 during heating. HP in FIG. 5 means the heat pump operation in this case.
【００２６】[0026]
【発明の効果】以上の説明から明らかなように本発明に
よれば、中央熱源装置から冷温水コイルに流れる冷温水
温度を外気条件に合わせて高めの温度に設定し、各空調
ゾーンの温度センサからの信号に基ずくオンオフ制御に
より、各空調ゾーン用の蒸発器に冷媒を供給することに
より、温度制御を簡単化し且つ熱回収運転による省エネ
ルギー効果も期待でき、また、冷房時の時間外運転およ
び中間期の軽負荷運転時における中央熱源装置の運転を
不要とし、さらに、暖房時、空調ゾーン用の蒸発器を冷
房用として自由に利用することができる。As is apparent from the above description, according to the present invention, the temperature of the cold / hot water flowing from the central heat source device to the cold / hot water coil is set to a higher temperature in accordance with the outside air condition, and the temperature sensor of each air conditioning zone is set. By supplying the refrigerant to the evaporator for each air conditioning zone by ON / OFF control based on the signal from, the temperature control can be simplified and the energy saving effect by the heat recovery operation can be expected. The operation of the central heat source device during the light load operation in the intermediate period is not required, and the evaporator for the air conditioning zone can be freely used for cooling during heating.
【図１】本発明の中央熱源式空調装置の１実施例を示
し、各フロアに設置される空調機の構成図である。FIG. 1 shows an embodiment of a central heat source type air conditioner of the present invention, and is a configuration diagram of an air conditioner installed on each floor.
【図２】本発明の中央熱源式空調装置の１実施例を示す
全体構成図である。FIG. 2 is an overall configuration diagram showing one embodiment of a central heat source type air conditioner of the present invention.
【図３】本発明の中央熱源式空調装置の１実施例を示す
中央熱源装置と空調機との関係を示す構成図である。FIG. 3 is a configuration diagram showing a relationship between a central heat source device and an air conditioner, showing one embodiment of a central heat source type air conditioner of the present invention.
【図４】本発明の中央熱源式空調装置の１実施例を示す
中央熱源装置の構成図である。FIG. 4 is a configuration diagram of a central heat source device showing one embodiment of a central heat source type air conditioner of the present invention.
【図５】本発明の制御方法の１例を説明するための図で
ある。FIG. 5 is a diagram for explaining an example of a control method according to the present invention.
１…空調機、２…冷温水供給管、３…冷温水戻り管、４
…外気供給ダクト ５…中央熱源装置、６…冷温水ポンプ、９…空調ゾー
ン、１０…給気ダクト １１…還気ダクト、１２…温度センサ、１５…冷温水コ
イル １６…送風ファン、１９…系統別温度調整用熱源機、２
０…圧縮機 ２１…凝縮器、２３…冷媒供給開閉弁、２５…蒸発器 ２６…バイパス用切換弁、３０…吸収式冷温水発生機、
３１…冷却塔 ３４…熱交換器、３５…バイパス用切換弁、３６…温度
調整弁1 ... air conditioner, 2 ... cold and hot water supply pipe, 3 ... cold and hot water return pipe, 4
... outside air supply duct 5 ... central heat source device, 6 ... cold and hot water pump, 9 ... air conditioning zone, 10 ... air supply duct 11 ... return air duct, 12 ... temperature sensor, 15 ... cold and hot water coil 16 ... blowing fan, 19 ... system Separate heat source for temperature control, 2
0: Compressor 21: Condenser, 23: Refrigerant supply opening / closing valve, 25: Evaporator 26: Switching valve for bypass, 30: Absorption type cold / hot water generator
31 cooling tower 34 heat exchanger 35 switching valve for bypass 36 temperature control valve
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平２−13737（ＪＰ，Ａ) 特開 平３−117837（ＪＰ，Ａ) 特開 昭62−37625（ＪＰ，Ａ) 特開 平３−79934（ＪＰ，Ａ) 特開 平４−261673（ＪＰ，Ａ) 特開 平７−19523（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) F24F 3/00 F24F 5/00 F24F 1/00 F24F 3/044 ────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-2-13737 (JP, A) JP-A-3-117837 (JP, A) JP-A-62-37625 (JP, A) JP-A-3-3765 79934 (JP, A) JP-A-4-26167 (JP, A) JP-A-7-19523 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) F24F 3/00 F24F 5 / 00 F24F 1/00 F24F 3/044
Claims (3)
各空調機に冷温水を循環させるための中央熱源装置と、
前記空調機に接続される複数の空調ゾーンと、各空調ゾ
ーンに配設される温度センサと、前記空調機内に配設さ
れる冷温水コイルと、空調ゾーン別に配設される蒸発器
と、空気を冷温水コイル、蒸発器の順に各空調ゾーンに
循環させる送風ファンと、各蒸発器に冷媒供給開閉弁を
介して接続される系統別温度調整用熱源機と、前記中央
熱源装置で製造された冷温水を冷温水コイルおよび系統
別温度調整用熱源機に循環させる冷温水ポンプとを備
え、前記冷温水コイルの冷温水温度を外気条件に合わせ
て高めの温度に設定し、各空調ゾーンの温度センサから
の信号に基ずくオンオフ制御により、前記冷媒供給開閉
弁を開閉し各蒸発器に冷媒を供給することを特徴とする
中央熱源式空調装置。1. An air conditioner installed on each floor of a building;
A central heat source device for circulating cold and hot water through each air conditioner,
A plurality of air conditioning zones connected to the air conditioner, a temperature sensor disposed in each air conditioning zone, a cold / hot water coil disposed in the air conditioner, an evaporator disposed for each air conditioning zone, and air A blast fan that circulates a cooling / heating water coil and an evaporator in the order of each air conditioning zone, a system-specific temperature adjusting heat source device connected to each evaporator via a refrigerant supply opening / closing valve, and the central heat source device. A cold / hot water pump that circulates cold / hot water through a cold / hot water coil and a system-specific temperature adjusting heat source device, and sets the cold / hot water temperature of the cold / hot water coil to a higher temperature in accordance with the outside air condition; A central heat source type air conditioner, wherein the refrigerant supply on / off valve is opened and closed to supply refrigerant to each evaporator by on / off control based on a signal from a sensor.
発生器であることを特徴とする請求項１に記載の中央熱
源式空調装置。2. The central heat source type air conditioner according to claim 1, wherein the heat source device of the central heat source device is an absorption type cold / hot water generator.
却水と熱交換可能にすることを特徴とする請求項１また
は請求項２に記載の中央熱源式空調装置。3. A central heat source type air conditioner according to claim 1, wherein said cold / hot water is heat-exchangeable with cooling water on a cooling tower side of said central heat source device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19249194A JP3243729B2 (en) | 1994-08-16 | 1994-08-16 | Central heat source type air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19249194A JP3243729B2 (en) | 1994-08-16 | 1994-08-16 | Central heat source type air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0861703A JPH0861703A (en) | 1996-03-08 |
| JP3243729B2 true JP3243729B2 (en) | 2002-01-07 |
Family
ID=16292195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19249194A Expired - Fee Related JP3243729B2 (en) | 1994-08-16 | 1994-08-16 | Central heat source type air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3243729B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102090027B1 (en) * | 2019-10-07 | 2020-03-17 | 주식회사 휴먼에어텍 | Air conditioner for four seasons with ultrafine dust removal and sterilization function |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5103778B2 (en) * | 2006-04-17 | 2012-12-19 | ダイキン工業株式会社 | Air conditioning system |
| CN103225854A (en) * | 2012-01-31 | 2013-07-31 | 葛永乐 | Atomization-cooling energy-saving central air conditioner |
| CN114167910B (en) * | 2021-09-17 | 2022-08-09 | 郑州日产汽车有限公司 | Temperature control device for power assembly component of laboratory |
-
1994
- 1994-08-16 JP JP19249194A patent/JP3243729B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102090027B1 (en) * | 2019-10-07 | 2020-03-17 | 주식회사 휴먼에어텍 | Air conditioner for four seasons with ultrafine dust removal and sterilization function |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0861703A (en) | 1996-03-08 |
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