JPH0229560A - Regeneration type airconditioner - Google Patents

Abstract

PURPOSE:To reduce power consumption by switching over a refrigerant circulation passage for an airconditioner, so as to perform stored hot heat cooling operation required to store hot heat in a regeneration tank while cooling the interior of a room, and stored cold heat heating operation required to store cold heat in the regeneration tank while heating the interior of a room. CONSTITUTION:A control means 25 is designed to switch over a circulation passage change over mechanism 51 under control during cooling operation so that a first passage where refrigerants, after condensed in a heat source side heat exchanger 3, are evaporated in a load side heat exchanger 6, may be switched over to a third passage where refrigerants, after condensed in heat exchanger coil 13, are evaporated in the load side heat exchanger. Therefore, when it is necessary to store hot heat in a regeneration tank 12, hot heat can be stored while performing cooling operation for each room without any special operation exclusively designed for hot heat storage. In addition, the circulation passage switch over mechanism 51 can be changed over by the control means 25 in a similar manner under switch over control while performing heating operation without a special operation exclusively designed for cold heat storage when it is necessary to store cold heat.

Description

【発明の詳細な説明】 （産業上の利用分野） 本発明は、蓄熱媒体を内蔵する蓄熱槽を備えてなる蓄熱
式空気調和装置に係り、特に蓄熱の利用法の拡大対策に
関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a regenerative air conditioner equipped with a heat storage tank containing a heat storage medium, and particularly to measures to expand the use of heat storage.

（従来の技術） 従来より、蓄熱式空気調和装置として、特開昭６１−１
２５５５４号公報に開示される如く、圧縮機、熱源側熱
交換器、減圧機構および負荷側熱交換器を冷媒回路で循
環接続し、蓄熱槽内の熱交換コイルを介して冷媒回路の
液管とガス管とをバイパス路で接続するとともに、三方
弁および四路切換弁を配置して上記冷媒回路とバイパス
路とに冷媒の循環経路を切換え可能に構成しておき、通
常冷房運転、冷房運転用の蓄冷熱運転、蓄暖熱回収暖房
運転、暖房運転、暖房運転用の蓄暖熱運転および蓄暖熱
回収暖房運転の各種運転モードで装置を運転することに
より、蓄熱槽の蓄熱の有効利用、すなわち使用電力の低
減を図ろうとするものは公知の技術である。(Prior art) Conventionally, as a heat storage type air conditioner, Japanese Patent Laid-Open No. 61-1
As disclosed in Publication No. 25554, a compressor, a heat source side heat exchanger, a pressure reducing mechanism, and a load side heat exchanger are cyclically connected in a refrigerant circuit, and connected to a liquid pipe of the refrigerant circuit via a heat exchange coil in a heat storage tank. In addition to connecting the gas pipe with a bypass path, a three-way valve and a four-way switching valve are arranged so that the refrigerant circulation path can be switched between the refrigerant circuit and the bypass path, and is used for normal cooling operation and cooling operation. By operating the device in various operation modes such as cold storage heat operation, heating storage heat recovery heating operation, heating operation, heating operation for heating operation, and heating storage heat recovery heating operation, effective use of heat stored in the thermal storage tank, In other words, it is a known technique that attempts to reduce power consumption.

また、特開昭６１−１１０８５９号公報に開示される如
く、複数の室内熱交換器を配置したマルチ形空気調和装
薩において、それぞれの室内熱交換器のガスラインへの
接続を吸入側と吐出側とに個別に切換えるようにしてお
き、必要に応じて各室内熱交換器を蒸発器と凝縮器とに
使い分けて、一部で冷房運転運転を行いながら他方で暖
房運転を同時に行うことにより、それぞれの熱交換で得
た冷熱と暖熱との有効利用、すなわち使用電力の低減を
図ろうとするものは知られている。In addition, as disclosed in Japanese Patent Application Laid-Open No. 61-110859, in a multi-type air conditioner in which a plurality of indoor heat exchangers are arranged, each indoor heat exchanger is connected to a gas line on the suction side and on the discharge side. By using each indoor heat exchanger as an evaporator and a condenser as needed, one part can be used for cooling while the other can be used for heating. There are known devices that attempt to effectively utilize the cold and warm heat obtained through heat exchange, that is, to reduce power consumption.

（発明が解決しようとする課題） しかしながら、上記従来のもののうち前者のものでは、
蓄冷熱あるいは蓄暖熱のための運転を通常の冷房運転あ
るいは暖房運転とは別途行う必要があり、そのための電
力が必要である。したがって、使用電力の節減効果を十
分発揮できない虞れがある。(Problem to be solved by the invention) However, in the former of the above conventional ones,
It is necessary to perform operation for storing cold heat or warm heat separately from normal cooling operation or heating operation, and electric power is required for this purpose. Therefore, there is a possibility that the effect of reducing power consumption may not be sufficiently achieved.

また、後者のものでは、冷房運転を行っている室内熱交
換器と暖房運転を行っている室内熱交換器との負荷のバ
ランスがとれない場合には、余剰の熱が外部に排出され
るので、運転状態によっては、使用電力の節減効果を十
分発揮できない虞れがある。In addition, with the latter, if the load cannot be balanced between the indoor heat exchanger performing cooling operation and the indoor heat exchanger performing heating operation, excess heat will be discharged to the outside. However, depending on the operating conditions, there is a possibility that the effect of reducing power consumption cannot be sufficiently achieved.

本発明は斯かる点に鑑みてなされたものであり、その目
的は、室内側で冷房運転および暖房運転を行いながら蓄
熱を行う手段を講することにより、蓄熱の利用効率の向
上と利用用途の拡大とを図ることにある。The present invention has been made in view of the above, and its purpose is to improve the utilization efficiency of heat storage and increase the number of uses by providing a means for storing heat while performing cooling and heating operations indoors. The aim is to expand the

（課題を解決するための手段） 上記目的を達成するため第１の解決手段は、第１図に示
すように、圧縮機（１）、熱源側熱交換器（３）、該熱
源側熱交換器（３）用の減圧機構（４）、負荷側熱交換
器（６）および該負荷側熱交換器（６）用の減圧機構（
５）を接続し、冷房サイクルと暖房サイクルとに切換え
可能な主冷媒回路（１０）と、蓄熱可能な蓄熱媒体を内
蔵する蓄熱槽（１２）と、該蓄熱槽（１２）の蓄熱媒体
と冷媒との熱交換を行うための熱交換コイル（１３）と
、該熱交換コイル（１３）用の減圧機構（１７）と、該
減圧機構（１７）および上記熱交換コイル（１３）を介
して上記主冷媒回路（１０）の液ライン（８ｃ）とガス
ライン（８ｄ）とを冷媒のバイパス可能に接続するバイ
パス路（１６）とを備えた蓄熱式空気調和装置を対象と
する。(Means for solving the problem) As shown in FIG. a pressure reduction mechanism (4) for the heat exchanger (3), a pressure reduction mechanism (4) for the load side heat exchanger (6), and a pressure reduction mechanism for the load side heat exchanger (6).
5), a main refrigerant circuit (10) that can be switched between a cooling cycle and a heating cycle, a heat storage tank (12) containing a heat storage medium capable of storing heat, and a heat storage medium and refrigerant in the heat storage tank (12). a heat exchange coil (13) for exchanging heat with the heat exchange coil (13), a pressure reduction mechanism (17) for the heat exchange coil (13), and a pressure reduction mechanism (17) for the heat exchange coil (13); The object of the present invention is a regenerative air conditioner equipped with a bypass passage (16) that connects a liquid line (8c) and a gas line (8d) of a main refrigerant circuit (10) so that refrigerant can be bypassed.

そして、冷媒の循環経路を、冷媒が上記熱源側熱交換器
（３）で凝縮されたのち負荷側熱交換器（６）で蒸発す
る第１経路、冷媒が負荷側熱交換器（６）で凝縮された
のち熱源側熱交換器（３）で蒸発する第２経路、冷媒が
上記熱交換コイル（１３）で凝縮されたのち負荷側熱交
換器（６）で蒸発する第３経路、および冷媒が負荷側熱
交換器（６）で凝縮されたのち熱交換コイル（１３）で
蒸発する第４経路とに切換える循環経路切換機構（５１
）と、冷媒が上記第１．第２経路を循環してそれぞれ通
常冷房運転０通常暖房運転を行うとともに、第３経路を
循環して冷房と同時に蓄熱槽（１２）に暖熱を蓄える蓄
暖熱冷房運転および第４経路を循環して暖房と同時に蓄
熱槽（１２）に冷熱を蓄える蓄暖熱冷房運転を行うよう
に上記循環経路切換機構（５１）を切換制御する制御手
段（２５）とを設ける構成としたものである。The refrigerant circulation path is divided into a first path in which the refrigerant is condensed in the heat source side heat exchanger (3) and then evaporated in the load side heat exchanger (6), and a first path in which the refrigerant is evaporated in the load side heat exchanger (6). A second path in which the refrigerant is condensed and then evaporated in the heat exchanger (3) on the heat source side; a third path in which the refrigerant is condensed in the heat exchange coil (13) and then evaporated in the load-side heat exchanger (6); The circulation path switching mechanism (51
), and the refrigerant is the above-mentioned No. 1. The second route is circulated to perform normal cooling operation and normal heating operation, and the third route is circulated to cool and at the same time warm heat is stored in the heat storage tank (12), and the fourth route is circulated. A control means (25) is provided for switching and controlling the circulation path switching mechanism (51) so as to carry out heating and cooling operation in which cold heat is stored in the heat storage tank (12) at the same time as heating.

第２の解決手段は、上記第１の解決手段と同様の空気調
和装置を対象とし、第１図に示すように、冷媒の循環経
路を、上記第１経路、第３経路、および熱源側熱交換器
（３）で凝縮された冷媒が主冷媒回路（１０）とバイパ
ス路（１６）とに分流したのち負荷側熱交換器（６）と
熱交換コイル（１３）とで蒸発する第５経路に切換える
循環経路切換機構（５１）と、冷媒が上記第１．第３経
路を循環してそれぞれ通常冷房運転、蓄暖熱冷房運転を
行うとともに、上記第５経路を循環して冷房と同時に蓄
熱槽（１２）に冷熱を蓄える蓄冷熱冷房運転を行うよう
に上記循環経路切換機構（５１）を切換制御する制御手
段（２５）とを設けたものである。The second solution is aimed at an air conditioner similar to the first solution, and as shown in FIG. A fifth path in which the refrigerant condensed in the exchanger (3) is divided into the main refrigerant circuit (10) and the bypass path (16) and then evaporated in the load side heat exchanger (6) and the heat exchange coil (13). A circulation path switching mechanism (51) that switches the refrigerant to the first one. The third route is circulated to perform normal cooling operation and heating storage heat cooling operation, respectively, and the fifth route is circulated to perform cold storage heat cooling operation in which cold heat is stored in the heat storage tank (12) at the same time as cooling. A control means (25) for switching and controlling the circulation path switching mechanism (51) is provided.

第３の解決手段は、第１図に示すように、上記第１の解
決手段と同様の空気調和装置を対象とし、冷媒の循環経
路を、上記第２経路、第４経路、および吐出後主冷媒回
路（１０）とバイパス路（１６）とに分流して負荷側熱
交換器（６）および熱交換コイル（１３）で凝縮された
冷媒が熱源側熱交換器（３）で蒸発する第６経路に切換
える循環経路切換機構（５１）と、冷媒が上記第２．第
４経路を循環してそれぞれ通常暖房運転、蓄暖熱冷房運
転を行うとともに、上記第６経路を循環して暖房と同時
に蓄熱・槽（１２）に暖熱を蓄える蓄暖熱暖房運転を行
うように上記循環経路切換機構（５１）を切換制御する
制御手段（２５）とを設けたものである。The third solution, as shown in FIG. The sixth refrigerant is divided into the refrigerant circuit (10) and the bypass path (16) and condensed in the load side heat exchanger (6) and heat exchange coil (13), and then evaporated in the heat source side heat exchanger (3). A circulation path switching mechanism (51) that switches the refrigerant to the second path. The fourth route is circulated to perform normal heating operation and storage heat cooling operation, respectively, and the sixth route is circulated to perform heating and storage heat heating operation in which warm heat is stored in the heat storage/tank (12) at the same time. A control means (25) for switching and controlling the circulation path switching mechanism (51) is provided.

第４の解決手段は、第１図に示すように、上記第１の解
決手段と同様の空気調和装置を対象とし、冷媒の循環経
路を、上記第１経路、第２経路、第５経路および第６経
路に切換える循環経路切換機構（５１）と、冷媒が第１
．第２経路を循環してそれぞれ通常冷房運転、ａ常暖房
運転を行うとともに、第５．第６経路を循環してそれぞ
れ蓄冷熱冷房運転、蓄暖熱暖房運転を行うように循環経
路切換機構（５１）を切換制御する制御手段（２５）と
を設けたものである。As shown in FIG. 1, the fourth solution is aimed at an air conditioner similar to the first solution, and the refrigerant circulation route is divided into the first route, the second route, the fifth route, and the like. A circulation path switching mechanism (51) that switches to the sixth path, and a refrigerant that switches to the first path.
．． The second path is circulated to perform normal cooling operation and normal heating operation, respectively, and the fifth path. A control means (25) is provided for switching and controlling the circulation route switching mechanism (51) so that the sixth route is circulated to perform a cold storage heat cooling operation and a warm storage heat heating operation, respectively.

第５の解決手段は、第１図に示すように、上記第１の解
決手段と同様の空気調和装置を対象とし、冷媒の循環経
路を上記第１経路、第２経路、第３経路および第４経路
に切換える循環経路切換機構（５１）と、冷媒が上記第
１．第２経路を循環してそれぞれ通常冷房運転１通常暖
房運転を行うとともに、上記第３経路を循環して蓄暖熱
冷房運転を行った後、第４経路を循環して上記蓄暖熱冷
房運転で蓄熱槽（１２）に蓄えられた暖熱を回収して室
内を暖房する蓄暖熱回収暖房運転を行うように上記循環
経路切換機構（５１）を切換制御する制御手段（２５）
とを設けたものである。As shown in FIG. 1, the fifth solution is aimed at an air conditioner similar to the first solution, and the refrigerant circulation route is divided into the first route, the second route, the third route and the third route. A circulation path switching mechanism (51) that switches to four paths, and a refrigerant connected to the first path. The second route is circulated to perform the normal cooling operation and the normal heating operation, and the third route is circulated to perform the heat storage heat cooling operation, and then the fourth route is circulated to perform the heat storage heat cooling operation. control means (25) for switching and controlling the circulation route switching mechanism (51) to perform a stored heat recovery heating operation in which the warm heat stored in the heat storage tank (12) is recovered to heat the room;
It has been established that

第６の解決手段は、第１図に示すように、上記第１の解
決手段と同様の空気調和装置を対象とし、冷媒の循環経
路を上記第１経路、第２経路、第３経路および第４経路
に切換える循環経路切換機構（５１）と、冷媒が上記第
１．第２経路を循環してそれぞれ通常冷房運転１通常暖
房運転を行うとともに、上記第４経路を循環して蓄暖熱
冷房運転を行った後、第３経路を循環して上記蓄暖熱冷
房運転で蓄熱槽（１２）に蓄えられた冷熱を回収して室
内を冷房する蓄暖熱回収暖房運転を行うように上記循環
経路切換機構（５１）を切換制御する制御手段（２５）
とを設けたものである。As shown in FIG. 1, the sixth solution is aimed at an air conditioner similar to the first solution, and the refrigerant circulation route is divided into the first route, the second route, the third route, and the third route. A circulation path switching mechanism (51) that switches to four paths, and a refrigerant connected to the first path. The second route is circulated to perform the normal cooling operation and the normal heating operation, and the fourth route is circulated to perform the heat storage heat cooling operation, and then the third route is circulated to perform the heat storage heat cooling operation. control means (25) for switching and controlling the circulation path switching mechanism (51) to perform a stored heat recovery heating operation in which the cold heat stored in the heat storage tank (12) is recovered to cool the room;
It has been established that

さらに、第７の解決手段は、第２図に示すように、圧縮
機（１）と、一組の熱源側熱交換器（３）および該熱源
側熱交換器（３）用の第１減圧機構（４）と、互いに並
列に接続された複数組の負荷側熱交換器（６）〜（６）
および該負荷側熱交換器（６）用の減圧機構（５）〜（
５）とを循環接続し、冷房サイクルと暖房サイクルとに
切換え可能な主冷媒回路（１０）を備えるとともに、蓄
熱可能な蓄熱媒体を内蔵する蓄熱槽（１２）と、該蓄熱
槽（１２）の蓄熱媒体と冷媒との熱交換を行うための熱
交換コイル（１３）と、該熱交換コイル（１３）用の減
圧機構（１７）と、該減圧機構（１７）および上記熱交
換コイル（１３）を介して上記主冷媒回路（１０）の液
ライン（８ｃ）とガスライン（８ｄ）とを冷媒のバイパ
ス可能に接続するバイパス路（１６）とを備えた蓄熱式
空気調和装置を対象とする。Furthermore, as shown in FIG. 2, the seventh solution includes a compressor (1), a set of heat source side heat exchangers (3), and a first reduced pressure for the heat source side heat exchangers (3). Mechanism (4) and multiple sets of load-side heat exchangers (6) to (6) connected in parallel to each other.
and the pressure reducing mechanism (5) for the load side heat exchanger (6).
5), which is equipped with a main refrigerant circuit (10) that can be switched between a cooling cycle and a heating cycle, and a heat storage tank (12) containing a heat storage medium capable of storing heat; A heat exchange coil (13) for exchanging heat between a heat storage medium and a refrigerant, a pressure reduction mechanism (17) for the heat exchange coil (13), and the pressure reduction mechanism (17) and the heat exchange coil (13). The present invention is directed to a regenerative air conditioner equipped with a bypass passage (16) that connects the liquid line (8c) and gas line (8d) of the main refrigerant circuit (10) via the main refrigerant circuit (10) so that the refrigerant can be bypassed.

そして、冷媒の循環経路を、冷媒が上記熱源側熱交換器
（３）で凝縮されたのち各負荷側熱交換器（６）〜（６
）で蒸発する第１経路、冷媒が各負荷側熱交換器（６）
〜（６）で凝縮されたのち熱源側熱交換器（３）で蒸発
する第２経路、冷媒が一部の負荷側熱交換器（６）、　
　（６）で凝縮されたのち分流して他の負荷側熱交換器
（６）と熱交換コイル（１３）とで蒸発する第７経路お
よび吐出後分流して一部の負荷側熱交換器（６）と熱交
換コイル（１３）とで凝縮された冷媒が他の負荷側熱交
換器（６）、（６）で蒸発するように循環する第８経路
とに切換える循環経路切換機構（５１）と、冷媒が上記
第１．第２経路を循環して通常冷房運転１通常暖房運転
を行うとともに、冷媒が上記第７経路を循環して一部の
室内ユニット（Ｃ）、（Ｄ）では暖房、他の室内ユニッ
ト（Ｂ）では冷房を行いながら蓄熱槽（１２）に冷熱を
蓄える蓄暖熱冷暖同時運転、および一部の室内ユニット
（Ｂ）では暖房、他の室内ユニット（Ｃ）、　　（Ｄ）
では冷房を行いながら蓄熱槽（１２）に暖熱を蓄える蓄
暖熱冷房運転を行うように上記循環経路切換機構（５１
）を切換制御する制御手段（２５）とを設けたものであ
る。After the refrigerant is condensed in the heat source side heat exchanger (3), the refrigerant circulates through each of the load side heat exchangers (6) to (6).
), the refrigerant evaporates through each load side heat exchanger (6)
A second path in which the refrigerant is condensed in ~(6) and then evaporated in the heat source side heat exchanger (3);
(6) and then branched to evaporate in another load-side heat exchanger (6) and heat exchange coil (13). 6) and an eighth route in which the refrigerant condensed in the heat exchange coil (13) is circulated so as to evaporate in the other load-side heat exchangers (6), (6) (51). And, the refrigerant is the above-mentioned No. 1. The refrigerant circulates through the second path to perform normal cooling operation 1 and normal heating operation, and the refrigerant circulates through the seventh path to perform heating in some indoor units (C) and (D) and heating in other indoor units (B). In this case, simultaneous heating and cooling operation is performed in which cold heat is stored in the heat storage tank (12) while performing cooling, and some indoor units (B) perform heating, while other indoor units (C) and (D)
Then, the circulation route switching mechanism (51) is configured to perform a heating storage heat cooling operation in which warm heat is stored in the heat storage tank (12) while performing cooling.
) is provided with a control means (25) for switching control.

（作用） 以上の構成により、請求項（１）の発明では、冷房運転
時、制御手段（２５）により循環経路切換機構（５１）
が切換制御されて、冷媒が熱源側熱交換器（３）で凝縮
されたのち負荷側熱交換器（６）で蒸発する第１経路と
、冷媒が熱交換コイル（１３）で凝縮されたのち負荷側
熱交換器（６）で蒸発する第３経路とに切換えられる。(Function) With the above configuration, in the invention of claim (1), during cooling operation, the control means (25) controls the circulation path switching mechanism (51).
is controlled so that the refrigerant is condensed in the heat source side heat exchanger (3) and then evaporated in the load side heat exchanger (6), and the refrigerant is condensed in the heat exchange coil (13). The heat exchanger (6) on the load side evaporates through the third path.

したがって、蓄熱槽（１２）に暖熱を蓄えるとき、蓄暖
熱専用の運転を行うことなく、各室内の冷房運転を行い
ながら暖熱が蓄えられることになる。Therefore, when storing warm heat in the heat storage tank (12), the warm heat is stored while performing cooling operation in each room without performing an operation exclusively for storing warm heat.

また、同様に、暖房運転時、制御手段（２５）により循
環経路切換機構（５１）が切換制御されて、冷媒が負荷
側熱交換器（６）で凝縮されたのち熱源側熱交換器（３
）で蒸発する第２経路と、冷媒が負荷側熱交換器（６）
で凝縮されたのち熱交換コイル（１３）で蒸発する第４
経路とに切換えられる。したがって、冷熱を蓄えたいと
きにも、蓄冷熱専用の運転を行うことなく、暖房をしな
がら冷熱が蓄えられる。すなわち、室内の空調を行いな
がら所要の蓄熱が行われ、よって、使用電力が低減する
ことになる。Similarly, during heating operation, the control means (25) switches the circulation path switching mechanism (51) to condense the refrigerant in the load side heat exchanger (6) and then condenses the refrigerant in the heat source side heat exchanger (3).
), and the second path where the refrigerant evaporates in the load side heat exchanger (6).
The fourth condensed in the heat exchange coil (13) is then evaporated in the heat exchange coil (13).
route. Therefore, even when it is desired to store cold heat, cold heat can be stored while heating the room without performing a dedicated operation for storing cold heat. In other words, the required amount of heat is stored while air conditioning the room, thereby reducing power consumption.

請求項（２）の発明では、冷房運転時、制御手段（２５
）により、循環経路切換機構（５１）が切換制御されて
、冷媒が上記第１．第３経路に加えて、蓄冷熱冷房運転
を行う第５経路を循環するように切換えられるので、上
記請求項（１）の発明の効果に加えて、冷房運転時の蓄
熱槽（１２）の利用法がさらに拡大し多様な蓄熱要求に
応え得ることになり、使用電力の低減効果がさらに向上
することになる。In the invention of claim (2), during cooling operation, the control means (25
), the circulation path switching mechanism (51) is switched and controlled so that the refrigerant is transferred to the first. In addition to the third route, it can be switched to circulate through the fifth route for performing cold storage heat cooling operation, so in addition to the effect of the invention of claim (1) above, the heat storage tank (12) can be utilized during cooling operation. As the method expands further, it will be able to meet a variety of heat storage requirements, and the effect of reducing power consumption will further improve.

請求項（３）の発明では、暖房運転時、制御手段（２５
）により循環経路切換機構（１）が切換制御されて、上
記第２．第４経路に加え、第６経路における蓄暖熱暖房
運転が行われるので、上記請求項（１）の発明の効果に
加えて、暖房運転時の蓄熱槽（１２）の利用用途がさら
に拡大し、使用電力の低減効果がさらに向上することに
なる。In the invention of claim (3), during heating operation, the control means (25
), the circulation path switching mechanism (1) is controlled to switch, and the second. In addition to the fourth route, the storage heat heating operation is performed in the sixth route, so in addition to the effect of the invention of claim (1) above, the uses of the heat storage tank (12) during the heating operation are further expanded. , the effect of reducing power consumption will be further improved.

請求項（４）の発明では、制御手段（２５）により、循
環経路切換機構（５１）が切換制御されて、第１および
第２経路における通常冷暖房運転の他、冷房運転時には
第５経路における蓄冷熱冷房運転が行われ、暖房運、転
時には第６経路における蓄暖熱暖房運転が行われるので
、別途蓄熱専用の運転を行うことなく、空調負荷の余剰
分の蓄熱を利用して、使用電力の低減を図ることができ
る。In the invention of claim (4), the control means (25) switches and controls the circulation route switching mechanism (51), so that in addition to the normal cooling/heating operation in the first and second routes, the cold storage in the fifth route is performed during the cooling operation. Thermal cooling operation is carried out, and heating operation, and when switching on, heat storage heat heating operation is carried out in the 6th route, so there is no need to perform a separate operation dedicated to heat storage, and the surplus heat storage of the air conditioning load is used to reduce the power consumption. It is possible to reduce the

請求項（５）の発明では、制御手段（２５）により循環
経路切換機構（５１）が切換制御され、例えば冬期の早
朝だけ暖房運転を必要とするような室内で、前日の冷房
運転の終了時には所定の暖熱を蓄熱槽（１２）に蓄えて
おき、明朝運転開始時の室内の低温時に、冷媒が第４経
路を循環するようにしてその蓄暖熱を利用した高い暖房
能力でもって蓄暖熱回収暖房運転が行われるので、室内
が迅速に設定温度に収束することになる。すなわち、予
め蓄暖熱専用の運転を行うことなく所定の冷房運転を行
いながら暖熱を蓄えるとともに、その蓄えられた暖熱を
利用して、運転開始時等、特に暖熱が必要なときに効果
的に蓄暖熱を利用して、使用電力の低減を図ることがで
きる。In the invention of claim (5), the circulation path switching mechanism (51) is controlled to switch by the control means (25), so that, for example, in a room where heating operation is required only early in the morning in winter, at the end of the previous day's cooling operation. A predetermined amount of warm heat is stored in the heat storage tank (12), and when the temperature inside the room is low at the start of operation tomorrow morning, the refrigerant is circulated through the fourth path and stored with high heating capacity using the stored warm heat. Since the heat recovery heating operation is performed, the indoor temperature quickly converges to the set temperature. In other words, heat is stored while performing a predetermined cooling operation without performing an operation exclusively for heating and storing heat in advance, and the stored warmth is used when heating is particularly required, such as when starting operation. By effectively utilizing stored heat, it is possible to reduce power consumption.

また、請求項（６）の発明では、制御手段（２５）によ
り循環経路切換機構（５１）が切換制御され、例えば、
上記の例で早朝の暖房運転時に蓄熱槽（１２）内の蓄暖
熱量が少なくなった時点で、第２経路における蓄暖熱冷
房運転を行って冷熱を蓄えておき、その後室内の温度が
設定温度以上に回復して冷房運転に切換えられた後特に
温度の高い時期には、第３経路における蓄暖熱回収暖房
運転を行うことにより、蓄冷熱を有効に利用して使用電
力の低減を図ることができる。Further, in the invention of claim (6), the control means (25) switches and controls the circulation path switching mechanism (51), for example,
In the above example, when the amount of heat stored in the heat storage tank (12) decreases during heating operation in the early morning, the second path is performed to perform the storage heat cooling operation to store cold heat, and then the indoor temperature is set. After the temperature has recovered and switching to cooling operation, during particularly high temperature periods, the third route is used to perform a heating operation that recovers stored heat to effectively utilize stored cold heat and reduce power consumption. be able to.

請求項（７）の発明では、制御手段（２５）により循環
経路切換機構（５１）が切換制御されて、各室内ユニッ
ト（Ｂ）〜（Ｄ）が、各室内ユニット（Ｂ）〜（Ｄ）の
冷房負荷と暖房負荷とがバランスしない場合に、一部の
室内ユニット（Ｂ）で冷房運転を行い、同時に他の室内
ユニット（Ｃ）。In the invention of claim (7), the control means (25) switches the circulation path switching mechanism (51) so that each of the indoor units (B) to (D) When the cooling load and heating load are not balanced, some indoor units (B) perform cooling operation, and at the same time, other indoor units (C) operate.

（Ｄ）で暖房運転を行いながら、余剰負荷に相当する熱
を蓄冷熱又は蓄暖熱して、後に必要に応じて利用するこ
とにより、できる限り室外ユニット（Ａ）の運転を行う
ことなく所要の空調を行うことができ、よって、使用電
力の低減効果の向上を図ることができる。While performing heating operation in (D), the heat equivalent to the surplus load is stored as cold heat or warm heat and used later as needed, so that the required amount of heat can be achieved without operating the outdoor unit (A) as much as possible. Air conditioning can be performed, and therefore, the effect of reducing power consumption can be improved.

（実施例） 以下、本発明の実施例について、第３図以下の図面に基
づき説明する。(Example) Hereinafter, an example of the present invention will be described based on the drawings from FIG. 3 onwards.

第３図は請求項（１）〜（６）の発明の実施例に係る空
気調和装置の全体構成を示し、１台の室外ユニット（Ａ
）に２台の室内ユニット（Ｂ）、　　（Ｃ）が接続され
たいわゆるマルチ形空気調和装置が構成されている。上
記室外ユニット（Ａ）には、圧縮機（１）と、暖房運転
時には図中実線のごとく、冷房運転時には図中破線のご
とく接続を切換える第１四路切換弁（２）と、冷房運転
時には凝縮器、暖房運転時には蒸発器となる熱源側熱交
換器としての室外熱交換器（３）と、冷房運転時には冷
媒流量を調節し、暖房運転時には冷媒を減圧する減圧機
構としての第１電動膨張弁（４）と、圧縮機（１）への
吸入ガス中の液冷媒を分離するためのアキュムレータ（
７）と、液冷媒を貯溜するためのレシーバ（９）とが主
要機器として配置されている。また、上記各室内ユニッ
ト（Ｂ）、　　（Ｃ）は同一構成であって、冷房運転時
には冷媒の減圧を行い、暖房運転時には冷媒の流量を調
節する減圧機構とじての第２電動膨張弁（５）と、冷房
運転時には蒸発器、暖房運転時には凝縮器となる負荷側
熱交換器としての室内熱交換器（６）とが主要機器とし
て配置されている。そして、上記各機器（１）〜（７）
および（９）は冷媒配管（８）によって順次冷媒の流通
可能に接続されており、室外熱交換器（３）で空気との
熱交換により冷媒に付与された熱を各室内熱交換器（６
）、　　（６）で室内空気に付与する主冷媒回路（１０
）が構成されている。FIG. 3 shows the overall configuration of an air conditioner according to an embodiment of the invention of claims (1) to (6), and shows one outdoor unit (A
) is connected to two indoor units (B) and (C), forming a so-called multi-type air conditioner. The outdoor unit (A) includes a compressor (1), a first four-way switching valve (2) that switches the connection as shown in the solid line in the figure during heating operation, as shown in the broken line in the figure during cooling operation, and A condenser, an outdoor heat exchanger (3) as a heat source side heat exchanger that becomes an evaporator during heating operation, and a first electric expansion mechanism that adjusts the refrigerant flow rate during cooling operation and reduces the pressure of the refrigerant during heating operation. A valve (4) and an accumulator (
7) and a receiver (9) for storing liquid refrigerant are arranged as main equipment. In addition, each of the indoor units (B) and (C) has the same configuration, and includes a second electric expansion valve (5) as a pressure reducing mechanism that reduces the pressure of the refrigerant during cooling operation and adjusts the flow rate of the refrigerant during heating operation. ) and an indoor heat exchanger (6) serving as a load-side heat exchanger that serves as an evaporator during cooling operation and a condenser during heating operation are arranged as main equipment. And each of the above devices (1) to (7)
and (9) are sequentially connected by refrigerant piping (8) so that the refrigerant can flow, and the heat imparted to the refrigerant through heat exchange with air in the outdoor heat exchanger (3) is transferred to each indoor heat exchanger (6).
), the main refrigerant circuit (10
) is configured.

一方、上記室外ユニット（Ａ）と室内ユニット（Ｂ）、
　　（Ｃ）との間には、蓄熱媒体としての水を内蔵して
なる蓄熱槽（１２）を備えた蓄熱ユ二ッ）　（Ｘ）が配
置されており、上記蓄熱槽（１２）には、蓄熱媒体と配
管内部の媒体との熱交換を行うための熱交換コイルとし
ての第１コイル（１３）が設けられている。また、上記
主冷媒回路（１０）の液ライン（８ｃ）に介設されたレ
シーバ（９）からガスライン（８ｄ）側まで冷媒回路（
１０）の冷媒をガスライン（８ｄ）側にバイパスする第
１バイパス路（１６）が分岐していて、該第１バイパス
路（１６）に上記蓄熱槽（１２）内の第１コイル（１３
）が設けられ、該第１コイル（１３）と液ライン（８ｃ
）との間に、第１コイル（１３）への冷媒を減圧する減
圧機構としての第３電動膨張弁（１７）が介設されてい
る。On the other hand, the outdoor unit (A) and the indoor unit (B),
A heat storage unit (X) equipped with a heat storage tank (12) containing water as a heat storage medium is arranged between the heat storage tank (C) and the heat storage tank (12). A first coil (13) is provided as a heat exchange coil for exchanging heat between the heat storage medium and the medium inside the pipe. In addition, the refrigerant circuit (
A first bypass path (16) that bypasses the refrigerant of 10) to the gas line (8d) side is branched, and the first coil (13) in the heat storage tank (12) is connected to the first bypass path (16).
) is provided, and the first coil (13) and the liquid line (8c
), a third electric expansion valve (17) is interposed as a pressure reducing mechanism for reducing the pressure of the refrigerant to the first coil (13).

ここで、上記蓄熱ユニット（Ｘ）のガスライン（８ｄ）
には、第２四路切換弁（１９）が上記第１四路切換弁（
２）と並列に配置されていて、該第２四路切換弁（１９
）により、上記第１バイパス路（１６）のガスライン（
８ｄ）側端部が圧縮機（１）の吐出ライン（８ａ）と吸
入ライン（８ｂ）とに切換え可能に接続されている。Here, the gas line (8d) of the heat storage unit (X)
, the second four-way switching valve (19) is connected to the first four-way switching valve (
2), and the second four-way switching valve (19
), the gas line (
8d) The side end is switchably connected to the discharge line (8a) and suction line (8b) of the compressor (1).

請求項（１）〜（６）の発明において、以上の第１．第
２、第３電動膨張弁（４）、（５）、（１７）、第１．
第２電磁開閉弁（１１）、（１５）および第２四路切換
弁（１９）により、冷媒の循環経路を後述の各経路に切
換える循環経路切換機構（５１）が構成されている。In the inventions of claims (1) to (6), the above first aspect. 2nd, 3rd electric expansion valves (4), (5), (17), 1st.
The second electromagnetic on-off valves (11), (15) and the second four-way switching valve (19) constitute a circulation path switching mechanism (51) that switches the refrigerant circulation path to each path described below.

一方、装置には各種センサ類が配置されていて、（Ｔ　
ｈｌ）は各室内ユニット（Ｂ）、　　（Ｃ）に配置され
た室温センサ、（Ｔ　ｈ３）は蓄熱槽（１２）に配置さ
れ、蓄熱媒体たる水の温度を検出するための水温センサ
、（Ｐ＋）は圧縮機（１）の吐出ライン（８ａ）に取付
けられた高圧を検出する高圧センサ、（Ｐｌ）は吸入ラ
イン（８ｂ）に取付けられた低圧を検出するための低圧
センサであって、上記各センサ（Ｔｈｌ）　、　　（Ｔ
ｈｌ）、（Ｔ　ｈ３）、（Ｐｌ）、（Ｐｌ）の信号は、
装置全体の運転を制御するためのコントローラ（２５）
に信号の入力可能に接続されている。該コントローラ（
２５）は、上記各センサの信号に応じて、後述の各運転
モードを行うように上記循環経路切換機構（５１）を切
換制御する制御手段としての機能を有するものである。On the other hand, various sensors are installed in the device (T
hl) is a room temperature sensor placed in each indoor unit (B) and (C), (T h3) is a water temperature sensor placed in the heat storage tank (12) to detect the temperature of water serving as a heat storage medium, and (P+ ) is a high pressure sensor attached to the discharge line (8a) of the compressor (1) to detect high pressure; (Pl) is a low pressure sensor attached to the suction line (8b) to detect low pressure; Each sensor (Thl), (T
The signals of hl), (T h3), (Pl), and (Pl) are
Controller (25) for controlling the operation of the entire device
is connected to enable signal input. The controller (
25) has a function as a control means for switching and controlling the circulation route switching mechanism (51) to perform each operation mode described later in accordance with the signals from each of the sensors.

なお、（２０）は上記第２四路切換弁（１９）の−接続
ボート（１９ｄ）と吸入ライン（８ｂ）との間に介設さ
れたキャピラリーチューブ、（２１ａ）〜（２１ｅ）は
、冷媒配管（８）の室外ユニット（Ａ）出入口に介設さ
れた手動開閉弁である。In addition, (20) is a capillary tube interposed between the connection boat (19d) of the second four-way switching valve (19) and the suction line (8b), and (21a) to (21e) are refrigerant tubes. This is a manual on-off valve installed at the outdoor unit (A) entrance and exit of the pipe (8).

次に、制御手段（２５）による冷媒の循環経路の切換え
について第４図〜第１１図の運転モード図に基づき説明
する。冷房運転時には、第４図に示すように、第１．第
２四路切換弁（２）、　　（１９）が図中実線のごとく
切換わり、第１電動膨張弁（４）が開きかつ第３電動膨
張弁（１７）が閉じた状態で、第２電動膨張弁（５）、
（５）の開度を適度に調節しながら運転が行われる。す
なわち、吐出ガスが室外熱交換器（３）で凝縮され、各
室内熱交換器（６）、（６）で蒸発する第１経路（図中
矢印参照）を循環することにより、各室内の冷房が行わ
れる。Next, switching of the refrigerant circulation path by the control means (25) will be explained based on the operation mode diagrams shown in FIGS. 4 to 11. During cooling operation, as shown in FIG. The second four-way switching valves (2) and (19) are switched as shown by the solid lines in the figure, and the second electric expansion valve (4) is opened and the third electric expansion valve (17) is closed. expansion valve (5),
Operation is performed while appropriately adjusting the opening degree of (5). In other words, the discharged gas is condensed in the outdoor heat exchanger (3) and evaporated in the indoor heat exchangers (6), (6) by circulating through the first path (see arrows in the figure), thereby cooling each room. will be held.

また、暖房運転時には、第５図に示すように、第１．第
２四路切換弁（２）、（１９）が図中実線のごとく切換
わり、第２電動膨張弁（５）。Also, during heating operation, as shown in FIG. The second four-way switching valves (2) and (19) switch as shown by the solid line in the figure, and the second electric expansion valve (5).

（５）が開きかつ第３電動膨張弁（１７）が閉じた状態
で、第１電動膨張弁（４）の開度を適度に調節しながら
運転が行われる。すなわち、吐出ガスが各室内熱交換器
（６）、（６）で凝縮され、室外熱交換器（３）で蒸発
する第２経路（図中矢印参照）を循環することにより、
各室内の暖房が行われる。(5) is open and the third electric expansion valve (17) is closed, operation is performed while appropriately adjusting the opening degree of the first electric expansion valve (4). That is, by circulating the discharged gas through the second path (see arrow in the figure) where it is condensed in each indoor heat exchanger (6) and (6) and evaporated in the outdoor heat exchanger (3),
Each room is heated.

そして、本発明の特徴として、上記通常の冷房運転以外
に、冷房運転を行いながら蓄熱槽（１２）の蓄熱媒体に
暖熱を蓄える蓄暖熱冷房運転が行われる。すなわち、第
６図に示すように、第１．第２四路切換弁（２）、（１
９）がいずれも図中実線のごとく切換わり、第３電動膨
張弁（１７）が開きかつ第１電動膨張弁（４）がわずか
に開いた状態で、第２電動膨張弁（５）、　　（５）の
開度を適度に調節しながら運転が行われ、吐出ガスが第
１バイパス路（１６）に流れて第１コイル（１３）で凝
縮され、各室内熱交換器（６）、　　（６）で蒸発する
第３経路（図中矢印参照）を循環することにより、各室
内の冷房を行いながら蓄熱槽（１２）に暖熱を蓄えるよ
うになされている。また、第７図に示すように、上記と
同様の第１．第２接続切換機構（２）、　　（５１）の
切換えにおいて、第１電動膨張弁（４）、を開きその開
度を適度に調節することにより、室内熱交換器（６）で
凝縮された冷媒が主冷媒回路（１０）とバイパス路（１
６）とに分流して、室外熱交換器（３）と第１コイル（
１３）で蒸発する（図中矢印参照）ように循環すること
により、各室内を冷房しながら冷媒の一部で蓄熱槽（１
２）に暖熱を蓄える一部蓄暖熱冷房運転を行うようにな
されている。As a feature of the present invention, in addition to the above-mentioned normal cooling operation, a heating storage heat cooling operation is performed in which warm heat is stored in the heat storage medium of the heat storage tank (12) while performing the cooling operation. That is, as shown in FIG. Second four-way switching valve (2), (1
9) are all switched as shown by the solid lines in the figure, and with the third electric expansion valve (17) open and the first electric expansion valve (4) slightly open, the second electric expansion valve (5), ( The operation is performed while appropriately adjusting the opening degree of 5), and the discharged gas flows into the first bypass passage (16) and is condensed in the first coil (13), and each indoor heat exchanger (6), (6) ), the warm heat is stored in the heat storage tank (12) while cooling each room. In addition, as shown in FIG. In switching the second connection switching mechanism (2), (51), the first electric expansion valve (4) is opened and its opening degree is adjusted appropriately, so that the refrigerant condensed in the indoor heat exchanger (6) is is the main refrigerant circuit (10) and the bypass path (1
6) and the outdoor heat exchanger (3) and the first coil (
By circulating the refrigerant in such a way that it evaporates (see the arrow in the figure), a portion of the refrigerant cools each room while filling the heat storage tank (1
2) Partial heat storage cooling operation is performed to store warm heat.

そして、暖房運転をしながら蓄熱媒体に冷熱を蓄える蓄
暖熱冷房運転が行われる。すなわち、第８図に示すよう
に、第１．第２四路切換弁（２）。Then, a heating and cooling operation is performed in which cold heat is stored in the heat storage medium while the heating operation is being performed. That is, as shown in FIG. Second four-way switching valve (2).

（１９）がいずれも図中実線側に切換わり、第２電動膨
張弁（５）、（５）が開きかつ第１電動膨張弁（４）が
閉じた状態で、第３電動膨張弁（１７）の開度を適度に
調節しながら運転が行われ、各室内熱交換器（６）、　
　（６）で凝縮された冷媒が主冷媒回路（１０）から第
１バイパス路（１６）側にバイパスして流れ、第３電動
膨張弁（１７）で減圧されて蓄熱槽（１２）の第１コイ
ル（１３）で蒸発する第４経路（図中矢印参照）を循環
することにより、各室内の暖房を行いながら、蓄熱槽（
１２）の蓄熱媒体に冷熱を蓄えるようになされている。(19) are both switched to the solid line side in the figure, and with the second electric expansion valves (5), (5) open and the first electric expansion valve (4) closed, the third electric expansion valve (17) is switched to the solid line side in the figure. ) The operation is performed while appropriately adjusting the opening degree of each indoor heat exchanger (6),
The refrigerant condensed in (6) bypasses and flows from the main refrigerant circuit (10) to the first bypass path (16) side, is depressurized by the third electric expansion valve (17), and is depressurized by the third electric expansion valve (17). The heat storage tank (
12) Cold heat is stored in the heat storage medium.

また、第９図に示すように、循環経路切換機構（５１）
の切換状態は上記蓄暖熱冷房運転と基本的に同じ状態で
、第１電動膨張弁（４）を適度に開いて、各室内熱交換
器（６）、（６）で凝縮された冷媒が主冷媒回路（１０
）と第１バイパス路（１６）とに分流し、室外熱交換器
（３）および第１コイル（１３）で蒸発する（図中矢印
参照）ように循環することにより、各室内を暖房しなが
ら冷媒の一部で蓄熱槽（１２）に暖熱を蓄える一部蓄暖
熱冷房運転を行うようになされている。In addition, as shown in FIG. 9, a circulation path switching mechanism (51)
The switching state is basically the same as the heating/cooling operation described above, and the first electric expansion valve (4) is opened appropriately to allow the refrigerant condensed in each indoor heat exchanger (6), (6) to flow. Main refrigerant circuit (10
) and the first bypass path (16), and is circulated so as to be evaporated in the outdoor heat exchanger (3) and the first coil (13) (see arrows in the figure), heating each room. A partial heat storage cooling operation is performed in which warm heat is stored in a heat storage tank (12) using a portion of the refrigerant.

そして、第１０図に示すように、上記第４図における冷
房運転時、第３電動膨張弁（１７）を適度に開いて、循
環経路切換機構（５１）の他の切換状態は通常冷房運転
時と同様にして運転が行われ、室外熱交換器（３）で凝
縮された冷媒の一部が主冷媒回路（１０）から第１バイ
パス路（１６）側にバイパスして、室内熱交換器（６）
、（６）および第１コイル（１３）で蒸発する第５経路
（図中矢印参照）を循環することにより、各室内で冷房
を行いながら蓄熱媒体に冷熱を蓄える蓄冷熱冷房運転を
行うようになされている。As shown in FIG. 10, during the cooling operation in FIG. 4, the third electric expansion valve (17) is opened appropriately, and the other switching states of the circulation path switching mechanism (51) are during the normal cooling operation. The operation is carried out in the same manner as above, and a part of the refrigerant condensed in the outdoor heat exchanger (3) bypasses from the main refrigerant circuit (10) to the first bypass path (16) side and passes through the indoor heat exchanger ( 6)
, (6) and the first coil (13) to circulate through the fifth path (see the arrow in the figure) where the heat is evaporated, thereby performing a cold storage heat cooling operation in which cold heat is stored in the heat storage medium while cooling each room. being done.

さらに、第１１図に示すように、上記第５図における暖
房運転時、第３電動膨張弁（１７）の開度を適度に調節
し、循環経路切換機構（５１）の他の切換状態は通常暖
房運転時と同様にして運転が行われ、吐出冷媒の一部が
主冷媒回路（１０）から第１バイパス路（１６）側にバ
イパスし、各室内熱交換器（６）、　　（６）および第
１コイル（１３）で凝縮され、室外熱交換器（３）で蒸
発する第６経路（図中矢印参照）を循環することにより
、各室内を暖房しながら蓄熱槽（１２）の蓄熱媒体に暖
熱を蓄える蓄暖熱暖房運転を行うようになされている。Furthermore, as shown in FIG. 11, during the heating operation in FIG. The operation is carried out in the same manner as during the heating operation, and a part of the discharged refrigerant bypasses from the main refrigerant circuit (10) to the first bypass path (16) side, and each indoor heat exchanger (6), (6) and By circulating through the sixth path (see arrow in the figure) where it is condensed in the first coil (13) and evaporated in the outdoor heat exchanger (3), it is used as a heat storage medium in the heat storage tank (12) while heating each room. It is designed to perform a heat storage heating operation that stores warm heat.

なお、上記各運転モードの他、循環経路切換機構（５１
）の切換えにより、吐出冷媒が第１フイル（１３）で凝
縮され室外熱交換器（３）で蒸発するように循環して、
蓄熱槽（１２）内の蓄熱媒体である水に暖熱を蓄える蓄
冷熱専用運転、室外熱交換器（３）で凝縮され第１コイ
ル（１３）で蒸発するように循環して、蓄熱槽（１２）
に冷熱を蓄える蓄冷熱専用運転等、必要に応じて各種運
転を行うようになされている。In addition to the above operation modes, the circulation route switching mechanism (51
), the discharged refrigerant is circulated so that it is condensed in the first film (13) and evaporated in the outdoor heat exchanger (3).
A dedicated cold storage heat operation that stores warm heat in water, which is the heat storage medium in the heat storage tank (12), circulates so that it is condensed in the outdoor heat exchanger (3) and evaporated in the first coil (13). 12)
Various operations are performed as needed, such as a dedicated cold storage operation that stores cold heat in the air.

次に、コントローラ（２５）の制御について説明する。Next, control of the controller (25) will be explained.

第１２図は、上記コントローラ（２５）により行われる
上記第１実施例の装置を利用して空調制御を行う場合の
運転制御例のフローを示し、ステップＳ１で、室温Ｔａ
の値を判別し、室内の設定温度Ｔｓよりも高い場合には
、冷房運転を行うべく上記水温センサ（Ｔ　ｈ３）の水
温信号から蓄熱槽（１２）内の蓄暖熱量を検知して、蓄
暖熱量が後に暖房運転に利用するに十分な所定値以上か
否かを判別する。そして、蓄暖熱量が所定値よりも小さ
い場合にはステップＳ３で第１コイル（１３）を凝縮器
として使用する冷房運転つまり上記第７図の蓄暖熱冷房
運転を行う一方、蓄暖熱量が所定値以上であれば、後に
蓄暖熱を利用するに十分な暖熱が蓄えられていると判断
してステップＳ４で室外熱交換器（３）を凝縮器として
利用する通常の冷房運転に切換える。FIG. 12 shows a flowchart of an example of operation control when performing air conditioning control using the device of the first embodiment performed by the controller (25). In step S1, the room temperature Ta
If it is higher than the indoor set temperature Ts, the amount of heat stored in the heat storage tank (12) is detected from the water temperature signal of the water temperature sensor (Th3) to perform cooling operation, and the amount of heat stored in the heat storage tank (12) is stored. It is determined whether the amount of heating heat is equal to or greater than a predetermined value sufficient to be used for heating operation later. If the amount of stored heat is smaller than a predetermined value, in step S3, the cooling operation using the first coil (13) as a condenser, that is, the cooling operation of the stored heat as shown in FIG. 7 is performed, while the amount of stored heat is If it is equal to or higher than the predetermined value, it is determined that sufficient warm heat is stored to be used later, and in step S4 the outdoor heat exchanger (3) is switched to normal cooling operation in which the outdoor heat exchanger (3) is used as a condenser. .

一方、上記ステップＳ１の判別で、室温Ｔａが設定温度
Ｔｓよりも低い場合には、暖房運転を行うべくステップ
Ｓ５に移行して、ステップＳ５で、蓄冷熱量が後に冷房
運転で利用するに十分な所定値以上か否かを判別する。On the other hand, if it is determined in step S1 that the room temperature Ta is lower than the set temperature Ts, the process moves to step S5 to perform heating operation, and in step S5, it is determined that the amount of cold stored heat is sufficient to be used later in cooling operation. It is determined whether the value is greater than or equal to a predetermined value.

そして、蓄冷熱量が所定値よりも低い場合には、ステッ
プＳ６で第１コイル（１３）を蒸発器とする暖房運転を
行う一方、蓄冷熱量が所定値以上ある場合には、後に蓄
冷熱を利用するに十分な蓄冷熱が蓄えられていると判断
して、ステップＳ７で室外熱交換器（３）を蒸発器とす
る通常暖房運転を行う。If the amount of cold storage heat is lower than a predetermined value, heating operation is performed using the first coil (13) as an evaporator in step S6, while if the amount of cold storage heat is greater than the predetermined value, the stored cold heat is used later. It is determined that sufficient cold storage heat is stored, and in step S7, a normal heating operation is performed using the outdoor heat exchanger (3) as an evaporator.

なお、上記ステップＳ１の判別でＴａ−’ｒｓの場合に
は、室内のステップＳ８でサーモ停止するようになされ
ている。Note that if Ta-'rs is determined in step S1, the thermostat is stopped in step S8 indoors.

したがって、請求項（１）の発明では、冷房運転時、コ
ントローラ（制御手段）（２５）により、冷媒が主冷媒
回路（１０）におけるいわゆる冷房サイクルによる通常
の冷房運転を行う第１経路だけでなく、冷媒が第３経路
を循環するように循環経路切換機構（５１）が切換制御
されるので、蓄熱槽（１２）に暖熱を蓄えたいとき、従
来のように必ずしも予め蓄暖熱専用の運転を行う必要が
なく各室内ユニット（Ｂ）、（Ｃ）を冷房しながら暖熱
を蓄えることができる。また、同様に、冷熱を蓄えたい
ときにも、冷媒が通常暖房運転を行う第２経路だけでな
く蓄暖熱冷房運転を行う第４経路を循環するようになさ
れているので、蓄冷熱専用の運転を行うことな（、各室
内ユニット（Ｂ）。Therefore, in the invention of claim (1), during the cooling operation, the controller (control means) (25) directs the refrigerant not only to the first path in the main refrigerant circuit (10) that performs the normal cooling operation by the so-called cooling cycle. Since the circulation route switching mechanism (51) is switched and controlled so that the refrigerant circulates through the third route, when it is desired to store warm heat in the heat storage tank (12), it is not necessary to perform a dedicated operation for storing warm heat in advance as in the past. There is no need to perform the above operations, and heating heat can be stored while cooling each indoor unit (B) and (C). Similarly, when you want to store cold heat, the refrigerant circulates not only through the second path that normally performs heating operation, but also through the fourth path that performs heating storage cooling operation. Do not operate each indoor unit (B).

（Ｃ）の暖房運転を行いながら冷熱を蓄えることができ
る。すなわち、室内の空調を行いながら、所要の蓄熱を
行うことができ、よって、使用電力が低減することにな
る。Cold heat can be stored while performing the heating operation (C). In other words, the required amount of heat can be stored while air conditioning the room, thereby reducing power consumption.

請求項（′２Ｊの発明では、冷房運転時、コントローラ
（２５）により、冷媒が上記第１．第３経路に加えて、
第１１図の蓄冷熱冷房運転を行う第５経路を循環するよ
うに循環経路切換機構（５１）が切換制御されるので、
上記請求項（１）の発明の効果に加えて、冷房運転時の
蓄熱槽（１２）の利用用途がさらに拡大し多様な蓄熱要
求に応え得ることになり、使用電力の低減効果がさらに
向上することになる。In the invention of claim ('2J), during cooling operation, the controller (25) causes the refrigerant to pass through the first and third paths,
Since the circulation route switching mechanism (51) is switched and controlled so as to circulate through the fifth route for performing the cold storage heat cooling operation shown in FIG.
In addition to the effect of the invention of claim (1) above, the uses of the heat storage tank (12) during cooling operation are further expanded, and it is possible to meet various heat storage requirements, further improving the effect of reducing power consumption. It turns out.

請求項（３）の発明では、暖房運転時、コントローラ（
２５）により、上記第２．第４経路に加えて、第１１図
の蓄暖熱暖房運転を行うようにしているので、上記請求
項（′２Ｊの発明の効果に加えて、暖房運転時の蓄熱槽
（１２）の利用用途がさらに拡大し多様な蓄熱要求に応
え得ることになり、使用電力の低減効果がさらに向上す
ることになる。In the invention of claim (3), during heating operation, the controller (
25), the above 2. In addition to the fourth route, since the heat storage heating operation shown in FIG. This will further expand and meet a variety of heat storage requirements, further improving the effect of reducing power consumption.

請求項（４）の発明では、循環経路切換機構（５１）の
切換えにより、通常の冷暖房運転の他、冷房運転時には
蓄冷熱冷房運転を行い、暖房運転時には蓄暖熱暖房運転
を行うようにしているので、空調負荷の余剰分を蓄熱し
ておき、空調負荷の過大時にその蓄熱を利用することに
より、使用電力の低減を図ることができる。In the invention of claim (4), by switching the circulation route switching mechanism (51), in addition to the normal heating and cooling operation, a cold storage heat cooling operation is performed during the cooling operation, and a warm storage heat heating operation is performed during the heating operation. Therefore, by storing heat in excess of the air conditioning load and utilizing the heat storage when the air conditioning load is excessive, it is possible to reduce power consumption.

請求項（５）の発明では、例えば室内の発熱量が大きい
ために年間を通じて冷房を必要とし、冬期の早朝だけ暖
房運転を必要とするような室内で、前日に上記フローの
ステップＳ３の蓄暖熱冷房運転を行って前日の冷房運転
の終了時には所定の暖熱を蓄熱槽（１２）に蓄えておき
、明朝運転開始時の室内の低温時に、冷媒が第４経路を
循環するように循環経路切換機構（５１）を切換制御し
てその暖熱を利用した高い暖房能力でもって蓄暖熱回収
暖房運転を行うことにより、室内を迅速に設定温度に収
束させることができる。すなわち、予め蓄暖熱専用の運
転を行うことなく所定の冷房運転を行いながら暖熱を蓄
えるとともに、その蓄えられた暖熱を利用して、運転開
始時の特に暖熱が必要なときに効果的に暖熱を利用する
ことができ、使用電力の低減を図ることができるのであ
る。According to the invention of claim (5), for example, in a room where the amount of heat generated indoors is large and therefore requires cooling throughout the year, and heating operation is required only in the early morning in winter, the heat storage in step S3 of the above flow is performed on the previous day. At the end of the previous day's cooling operation, a predetermined amount of warm heat is stored in the heat storage tank (12), and the refrigerant is circulated through the fourth path when the room temperature is low when the operation starts tomorrow morning. By switching and controlling the route switching mechanism (51) and performing the stored heat recovery heating operation with high heating capacity using the warm heat, the indoor temperature can be quickly brought to the set temperature. In other words, heat is stored while performing a predetermined cooling operation without performing an operation exclusively for storing heating heat in advance, and the stored warmth is used to be effective especially when heating is required at the start of operation. As a result, it is possible to utilize heat for a long period of time, thereby reducing power consumption.

請求項（６）の発明では、例えば、上記の制御例で早朝
の暖房運転時に蓄熱槽（１２）内の蓄暖熱量が少なくな
った時点で、上記ステップＳ６の蓄暖熱冷房運転を行っ
ておき、その後室内の温度Ｔａが設定温度Ｔｓ以上に回
復して冷房運転に切換えられた後特に温度の高い時期に
は、冷媒が第３経路を循環するように循環経路切換機構
（５１）を切換制御してその蓄冷熱を利用した蓄暖熱回
収暖房運転を行うことにより、使用電力の低減を図るこ
とができる。In the invention of claim (6), for example, in the above control example, when the amount of heat stored in the heat storage tank (12) becomes small during early morning heating operation, the stored heat cooling operation of step S6 is performed. After the indoor temperature Ta recovers to the set temperature Ts or higher and the cooling operation is switched on, the circulation route switching mechanism (51) is switched so that the refrigerant circulates through the third route, especially during periods of high temperature. By controlling and performing the stored heat recovery heating operation using the stored cold heat, it is possible to reduce the power consumption.

なお、上記第１実施例では、空気調和装置が複数の室内
ユニット（Ｂ）、　　（Ｃ）を備えたマルチ形空気調和
装置について説明したが、上記請求項（１）〜（６）の
発明は、単体の室内ユニットを備えたいわゆるベア形空
気調和装置についても適用できることはいうまでもない
。In the first embodiment, the air conditioner is a multi-type air conditioner including a plurality of indoor units (B) and (C), but the inventions of claims (1) to (6) above Needless to say, the present invention can also be applied to a so-called bare type air conditioner equipped with a single indoor unit.

次に、請求項（′７１の発明に係る第２実施例について
説明する。Next, a second embodiment according to the invention of claim ('71) will be described.

第１４図は第２実施例の全体構成を示し、上記第１実施
例の構成に加えて、さらに−台の室内ユニット（Ｄ）が
付加されている。すなわち、室外ユニット（Ａ）に対し
て３台の室内ユニット（Ｃ）〜（Ｅ）が並列に接続され
ており、それらのガスライン（８ｄ）との接続を吐出ラ
イン（８ａ）と吸入ライン（８ｂ）とに切換えるために
、３台の室内ユニット（Ｂ）〜（Ｄ）に対して、２つの
第３四路切換弁（２２）、　　（２２）が配置されてい
る。そして、２つの室内ユニット（Ｃ）、　　（Ｄ）の
室内熱交換器（６）、　　（６）のガスライン側は互い
に並列に一方の第３四路切換弁（２２）の１ホードに接
続され、１つの室内ユニット（Ｂ）の室内熱交換器（６
）のガス側は他方の第３四路切換弁（２２）の１ポート
に接続されている。すなわち、２つの第３四路切換弁（
２２）、（２２）により、複数の室内熱交換器（負荷側
熱交換器）（６）〜（６）のガスライン（８ｄ）への接
続を吸入側と吐出側とに個別に切換えるようになされて
いて、第１〜第３四路切換弁（２）、（１９）。FIG. 14 shows the overall configuration of the second embodiment, in which -1 indoor unit (D) is added in addition to the configuration of the first embodiment. That is, three indoor units (C) to (E) are connected in parallel to the outdoor unit (A), and their gas line (8d) is connected to the discharge line (8a) and suction line ( 8b), two third four-way switching valves (22), (22) are arranged for the three indoor units (B) to (D). The gas line sides of the indoor heat exchangers (6) and (6) of the two indoor units (C) and (D) are connected in parallel to one hoard of the third four-way switching valve (22). , indoor heat exchanger (6) of one indoor unit (B)
) is connected to one port of the other third four-way switching valve (22). In other words, two third four-way switching valves (
22), (22) allows the connection of multiple indoor heat exchangers (load side heat exchangers) (6) to (6) to the gas line (8d) to be switched individually to the suction side and the discharge side. The first to third four-way switching valves (2), (19).

（２２）、（２２）　、第１〜第３電動膨張弁（４）（
５）〜（５）、　　（１７）およびＭ％１．第２電磁開
閉弁（１１）、（１５）により、冷媒の循環経路を切換
える循環経路切換機構（５１）が構成されている。(22), (22), first to third electric expansion valves (4) (
5) to (5), (17) and M%1. The second electromagnetic on-off valves (11) and (15) constitute a circulation route switching mechanism (51) that switches the refrigerant circulation route.

そして、本実施例において、運転モード図は省略するが
、上記第１実施例の第１経路における通常冷房運転に対
応する全ユニット（Ｂ）〜（Ｄ）の同時通常冷房運転、
第２経路における通常暖房運転に対応する全ユニット（
Ｂ）〜（Ｄ）の同時通常暖房運転、上記第１実施例の第
３経路における蓄暖熱冷房運転に対応する全ユニット（
Ｂ）〜（Ｄ）の同時蓄暖熱冷房運転、第４経路における
蓄暖熱冷房運転に対応する全ユニット（Ｂ）〜（Ｄ）の
同時蓄暖熱冷房運転、さらに、第７図。In this embodiment, although the operation mode diagram is omitted, simultaneous normal cooling operation of all units (B) to (D) corresponding to the normal cooling operation in the first route of the first embodiment,
All units that support normal heating operation in the second route (
All units corresponding to the simultaneous normal heating operation of B) to (D) and the storage heat cooling operation in the third route of the first embodiment (
FIG. 7 shows the simultaneous heating and cooling operation of all units (B) to (D) corresponding to the simultaneous heating and cooling operation of B) to (D), and the heating and cooling operation of all units (B) to (D) in the fourth route.

第９図に示す一部蓄暖熱冷房運転、一部蓄暖熱冷房運転
等を行うことができる。そして、それらの運転に加えて
、下記の各ユニット（Ｂ）〜（Ｄ）冷暖同時運転を行う
ことができる。Partial heat storage heat cooling operation, partial heat storage heat cooling operation, etc. shown in FIG. 9 can be performed. In addition to these operations, the following units (B) to (D) can be simultaneously cooled and heated.

すなわち、第１３図に示すように、第１〜第３四路切換
弁（２）、　　（１９）、　　（２２）、　　（２２）
が図中破線のごとく切換わり、第１電動膨張弁（４）が
閉じかつ各室内ユニット（Ｃ）、　　（Ｄ）の第２電動
膨張弁（５，（５）が開いた状態で、第３電動膨張弁（
１７）および室内ユニット（Ｂ）の第２電動膨張弁（５
）の開度を適度に調節して、冷媒が各室内ユニツ）（Ｃ
）、　　（Ｄ）の室内熱交換器（６）、　　（６）で凝
縮されたのち主冷媒回路（１０）とバイパス路（１６）
とに分流して室内ユニット（Ｂ）の室内熱交換器（６）
および第１コイル（１３）で蒸発する第８経路（図中矢
印参照）を循環するように循環経路切換機構（５１）を
切換制御することにより、室内ユニット（Ｂ）では冷房
運転、室内ユニット（Ｃ）、　　（Ｄ）では暖房運転を
行いながら、蓄熱槽（１２）に冷熱を蓄える蓄暖熱冷暖
同時運転を行うようになされている。That is, as shown in FIG. 13, the first to third four-way switching valves (2), (19), (22), (22)
is switched as shown by the broken line in the figure, and with the first electric expansion valve (4) closed and the second electric expansion valves (5, (5) of each indoor unit (C) and (D) open, the third Electric expansion valve (
17) and the second electric expansion valve (5) of the indoor unit (B).
) by adjusting the opening degree of the refrigerant to each indoor unit) (C
), (D) indoor heat exchanger (6), after being condensed in (6), the main refrigerant circuit (10) and bypass path (16)
The indoor heat exchanger (6) of the indoor unit (B) is divided into
By switching and controlling the circulation route switching mechanism (51) so that the first coil (13) circulates through the eighth route (see arrow in the figure) where evaporation occurs, the indoor unit (B) can switch between cooling operation and the indoor unit (B). In C) and (D), while performing heating operation, simultaneous heating and cooling operation is performed in which cold heat is stored in the heat storage tank (12).

また、第１４図に示すように、第１〜第３四路切換弁（
２）、（１９）、（２２）、（２２）がそれぞれ図中実
線側に切換わり、第１電動膨張弁（４）が閉じ、第３電
動膨張弁（１７）および室内ユニット（Ｂ）の第２電動
膨張弁（５）が開いた状態で、室内ユニット（Ｃ）、　
　（Ｄ）の第２電動膨張弁（５）、　　（５）の開度を
適度に調節しながら、吐出冷媒が主冷媒回路（１０）と
バイパス路（１６）とに分流して、室内ユニット（Ｂ）
の室内熱交換器（６）および第１コイル（１３）で凝縮
されたのち各室内ユニット（Ｃ）　、　　（Ｄ）　１７
）室内熱交換器（６）、（６）で蒸発する第８経路（図
中矢印参照）、を循環するように、循環経路切換機構（
５１）を切換制御することにより、室内ユニット（Ｂ）
では暖房運転、室内ユニット（Ｃ）（Ｄ）では冷房運転
を行いながら、蓄熱槽（１２）に暖熱を蓄える蓄熱回暖
房運転を行うようになされている。In addition, as shown in Fig. 14, the first to third four-way switching valves (
2), (19), (22), and (22) respectively switch to the solid line side in the figure, the first electric expansion valve (4) closes, and the third electric expansion valve (17) and the indoor unit (B) close. With the second electric expansion valve (5) open, the indoor unit (C),
The discharged refrigerant is divided into the main refrigerant circuit (10) and the bypass path (16) while appropriately adjusting the opening degrees of the second electric expansion valves (5) and (5) of (D), and the indoor unit ( B)
After being condensed in the indoor heat exchanger (6) and the first coil (13), each indoor unit (C) and (D) 17
) The circulation path switching mechanism (
51), the indoor unit (B)
The indoor units (C) and (D) perform a heating operation, while the indoor units (C) and (D) perform a cooling operation and a heat storage reheating operation in which warm heat is stored in the heat storage tank (12).

したがって、本実施例では、マルチ形空気調和装置の各
室内ユニット（Ｂ）〜（Ｄ）が、例えば電算室のように
常時冷房が必要な室と上記第１実施例のように冬期の早
朝だけ暖房が必要な室とに配置された場合で、各室内ユ
ニット（Ｂ）〜（Ｄ）の冷房負荷と暖房負荷とがバラン
スしない場合に、一部の室内ユニット（Ｂ）で冷房運転
を行い、同時に他の室内ユニット（Ｃ）、（Ｄ）で暖房
運転を行いながら、余剰の負荷の分を蓄冷熱又は蓄暖熱
して、後の必要時に利用することにより、できる限り室
外ユニット（Ａ）の運転を行うことなく所要の空調を行
うことができ、よって、使用電力の低減効果の向上を図
ることができる。Therefore, in this embodiment, each of the indoor units (B) to (D) of the multi-type air conditioner is used only for rooms that require constant cooling, such as a computer room, and for rooms that require constant cooling, such as the computer room, and for rooms that require constant cooling, such as the first embodiment. When placed in a room that requires heating, if the cooling load and heating load of each indoor unit (B) to (D) are not balanced, some indoor units (B) perform cooling operation, At the same time, while heating the other indoor units (C) and (D), the excess load is stored as cold or warm heat and used later when needed. Necessary air conditioning can be performed without operation, and therefore the effect of reducing power consumption can be improved.

なお、上記請求項（１）〜（刀の発明において、循環経
路切換機構（５１）として、各四路切換弁（２）（１９
）、　　（２２）、　　（２２）　、電磁開閉弁（ＩＩ
Ｊ　、　　（１５）　、電動膨張弁（４）、（５）〜（
５）、　　（１７）を配置したが、循環経路切換機構（
５１）の構成は、上記の他に三方切換弁等を組合せたも
のでもよく、上記各実施例に限定されるものではない。In addition, in the above claims (1) to (sword invention), each of the four-way switching valves (2) (19) is used as the circulation path switching mechanism (51).
), (22), (22), Solenoid on-off valve (II
J, (15), Electric expansion valve (4), (5) ~ (
5) and (17), but the circulation route switching mechanism (
The configuration of 51) may be a combination of a three-way switching valve or the like in addition to the above, and is not limited to the above embodiments.

（発明の効果） 以上説明したように、請求項（１）の発明によれば、空
気調和装置の冷媒循環経路の切換えにより、通常の冷房
運転、暖房運転だけでなく、室内を冷房しながら蓄熱槽
に暖熱を蓄える蓄暖熱冷房運転および室内を暖房しなが
ら蓄熱槽に冷熱を蓄える蓄暖熱冷房運転を行うようにし
たので、蓄熱専用の運転を別途行うことなく、蓄冷熱お
よび蓄暖熱を行うことができ、よって、使用電力の低減
を図ることができる。(Effects of the Invention) As explained above, according to the invention of claim (1), by switching the refrigerant circulation path of the air conditioner, it can not only perform normal cooling operation and heating operation, but also store heat while cooling the room. The system has been designed to perform a heat storage heat cooling operation that stores warm heat in a tank and a heat storage heat cooling operation that stores cold heat in a heat storage tank while heating the room. It is possible to generate heat, thereby reducing power consumption.

請求項（′２Ｊ又は（３）の発明によれば、冷媒の循環
経路の切換えにより、上記通常冷房運転および蓄暖熱冷
房運転に加えて蓄冷熱冷房運転、あるいは通常暖房運転
および蓄暖熱冷房運転に加えて蓄暖熱暖房運転を行うよ
うにしたので、さらに蓄冷熱の利用用途が拡大し、上記
請求項（１）の発明の効果をさらに向上させることがで
きる。According to the invention of claim ('2J or (3)), by switching the circulation path of the refrigerant, in addition to the normal cooling operation and the heat storage heat cooling operation, the cold storage heat cooling operation, or the normal heating operation and the heat storage heat cooling operation can be performed. Since the heating operation using stored heat is performed in addition to the operation, the applications of the stored cold heat are further expanded, and the effect of the invention of claim (1) can be further improved.

請求項（４）の発明によれば、冷媒の循環経路の切換え
により、通常冷房運転、暖房運転のほか、蓄冷熱冷房運
転、蓄暖熱暖房運転を行うようにしたので、別途蓄熱専
用の運転を行うことなく、蓄冷熱および蓄暖熱を行うこ
とができ、よって、使用電力の低減を図ることができる
。According to the invention of claim (4), by switching the refrigerant circulation path, in addition to normal cooling operation and heating operation, cold storage heat cooling operation and heating storage heat heating operation are performed, so that a separate operation dedicated to heat storage is performed. It is possible to store cold heat and heat heat without having to do so, and thus it is possible to reduce power consumption.

請求項（５）の発明によれば、冷媒循環経路の切換えに
より、蓄暖熱冷房運転を行った後その蓄冷熱を回収して
室内を暖房する蓄熱回収暖房運転を行うようにしたので
、冬期の早朝のみ暖房が必要な場合等に、蓄暖熱専用の
運転を行うことなく、蓄暖熱を利用した高い暖房能力に
よる室内の快適な空調効果を得ることができる。According to the invention as claimed in claim (5), by switching the refrigerant circulation path, after performing the heat storage heat cooling operation, the heat storage recovery heating operation is performed in which the stored cold heat is recovered to heat the room. In cases such as when heating is required only in the early morning hours, it is possible to obtain a comfortable air-conditioning effect in the room due to high heating capacity using stored heat without running a dedicated operation for stored heat.

請求項（６）の発明によれば、冷媒循環経路の切換えに
より、蓄暖熱冷房運転を行った後その蓄冷熱を回収して
室内を冷房する蓄暖熱回収暖房運転を行うようにしたの
で、上記のような場合の運転開始時に蓄冷熱専用の運転
を行うことなく、暖房しながら蓄えた冷熱をその後の冷
房に利用することができ、よって、使用電力の低減を図
ることができる。According to the invention as claimed in claim (6), by switching the refrigerant circulation path, after performing a heating heat cooling operation, a heating heat recovery heating operation is performed in which the stored cold heat is recovered to cool the room. At the start of operation in the above case, the cold heat stored during heating can be used for subsequent cooling without performing a dedicated operation for cold storage heat, and thus it is possible to reduce power consumption.

請求項（刀の発明によれば、複数の室内ユニットを備え
たマルチ形空気調和装置において、冷媒循環経路の切換
えにより、一部の室内ユニットを冷房しながら他の室内
ユニットを暖房すると同時に、蓄冷熱又は蓄暖熱を行う
蓄冷熱又は蓄暖熱冷暖同時運転を行うようにしたので、
蓄熱を利用することにより室外ユニットの運転頻度を低
減しながら所要の空調を行うことがＣき、よって、使用
電力の低減効果の向上を図ることができる。Claim (According to Katana's invention, in a multi-type air conditioner equipped with a plurality of indoor units, by switching the refrigerant circulation path, some indoor units are cooled while other indoor units are heated, and at the same time, cold storage is performed. Since it is designed to perform cold storage heat or storage heat cooling/heating operation that stores heat or heating heat,
By utilizing heat storage, it is possible to perform the required air conditioning while reducing the frequency of operation of the outdoor unit, and thus it is possible to improve the effect of reducing power consumption.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は請求項（１）〜（６）の発明の構成を示すブロ
ック図、第２図は、請求項（刀の発明の構成を示すブロ
ック図である。第３図〜第１２図は請求項（１）〜（６
）の発明に係る第１実施例を示し、第３図はその全体構
成を示す冷媒系統図、第４図〜第１１図は順に第１経路
における通常冷房運転、第２経路における通常暖房運転
、第３経路における蓄暖熱冷房運転、一部蓄暖熱冷房運
転、第４経路における蓄暖熱冷房運転、一部蓄暖熱冷房
運転、第５経路における蓄冷熱冷房運転、第６経路にお
ける蓄暖熱冷房運転の各運転モードを示す図、第１２図
はその制御の内容を示すフローチャート図、第１３図お
よび第１４図は請求項（７）の発明に係る第１実施例を
示し、それぞれ順に、第７経路における蓄暖熱冷暖同時
運転、第８経路における蓄暖熱冷暖同時運転の各運転モ
ードを示す図である。 （１）・・・圧縮機、（３）・・・室外熱交換器（熱源
側熱交換器）、（４）・・・第１電動膨張弁（減圧機構
）、（５）・・・第２電動膨張弁（減圧機構）、（６）
・・・室内熱交換器（負荷側熱交換器）、（８ｃ）・・
・液ライン、（８ｄ）・・・ガスライン、（１０）・・
・主冷媒回路、（１２）・・・蓄熱槽、（１３）・・・
第１コイル（熱交換コイル）、（１６）・・・第１バイ
パス路、（１７）・・・第３電動膨張弁（減圧機構）、
（２５）・・・コントローラ（制御手段）、（５１）・
・・循環経路切換機構。 ／２５（：＞ｂｃ″−′） 特許出願人　　　　ダイキン工業株式会社代理人　弁理
士　前　１）弘　（ほか２名）（第３　口 （室内ユニット） 偶覧 つ 日 第５図 （室内ユニット） （土ンＱ残回２各） 第４図 第９図 第８ 図FIG. 1 is a block diagram showing the structure of the invention of claims (1) to (6), and FIG. 2 is a block diagram showing the structure of the invention of claim (sword). Claims (1) to (6)
), FIG. 3 is a refrigerant system diagram showing the overall configuration, and FIGS. 4 to 11 show normal cooling operation in the first route, normal heating operation in the second route, Heating heat cooling operation in the 3rd route, partial heating heat cooling operation in the 4th route, partial heating heat cooling operation in the 5th route, cold storage heat cooling operation in the 6th route. 12 is a flow chart showing the details of the control, and FIGS. 13 and 14 show the first embodiment according to the invention of claim (7), respectively. It is a figure which shows each operation mode of the heat storage heat cooling/heating simultaneous operation in a 7th route, and the heat storage heat cooling/heating simultaneous operation in an 8th route in order. (1)...Compressor, (3)...Outdoor heat exchanger (heat source side heat exchanger), (4)...First electric expansion valve (pressure reduction mechanism), (5)...First 2 electric expansion valve (pressure reducing mechanism), (6)
...Indoor heat exchanger (load side heat exchanger), (8c)...
・Liquid line, (8d)...Gas line, (10)...
・Main refrigerant circuit, (12)... Heat storage tank, (13)...
First coil (heat exchange coil), (16)...first bypass path, (17)...third electric expansion valve (pressure reducing mechanism),
(25)... Controller (control means), (51)...
...Circulation route switching mechanism. /25 (:＞bc″-′) Patent applicant Daikin Industries, Ltd. Agent Patent attorney 1) Hiroshi (and 2 others) (3rd entry (indoor unit) Figure 5 (indoor unit) Doon Q remaining times 2 each) Figure 4 Figure 9 Figure 8

Claims (7)

【特許請求の範囲】[Claims] （１）圧縮機（１）、熱源側熱交換器（３）、該熱源側
熱交換器（３）用の減圧機構（４）、負荷側熱交換器（
６）および該負荷側熱交換器（６）用の減圧機構（５）
を接続し、冷房サイクルと暖房サイクルとに切換え可能
な主冷媒回路（１０）と、蓄熱可能な蓄熱媒体を内蔵す
る蓄熱槽（１２）と、該蓄熱槽（１２）の蓄熱媒体と冷
媒との熱交換を行うための熱交換コイル（１３）と、該
熱交換コイル（１３）用の減圧機構（１７）と、該減圧
機構（１７）および上記熱交換コイル（１３）を介して
上記主冷媒回路（１０）の液ライン（８ｃ）とガスライ
ン（８ｄ）とを冷媒のバイパス可能に接続するバイパス
路（１６）とを備えた蓄熱式空気調和装置において、冷
媒の循環経路を、冷媒が上記熱源側熱交換器（３）で凝
縮されたのち負荷側熱交換器（６）で蒸発する第１経路
、冷媒が負荷側熱交換器（６）で凝縮されたのち熱源側
熱交換器（３）で蒸発する第２経路、冷媒が上記熱交換
コイル（１３）で凝縮されたのち負荷側熱交換器（６）
で蒸発する第３経路、および冷媒が負荷側熱交換器（６
）で凝縮されたのち熱交換コイル（１３）で蒸発する第
４経路に切換える循環経路切換機構（５１）と、冷媒が
上記第１、第２経路を循環して通常冷房運転、通常暖房
運転を行うとともに、第３経路を循環して冷房と同時に
蓄熱槽（１２）に暖熱を蓄える蓄暖熱冷房運転、および
第４経路を循環して暖房と同時に蓄熱槽（１２）に冷熱
を蓄える蓄冷熱暖房運転を行うように上記循環経路切換
機構（５１）を切換制御する制御手段（２５）とを備え
たことを特徴とする蓄熱式空気調和装置。(1) Compressor (1), heat source side heat exchanger (3), pressure reduction mechanism (4) for the heat source side heat exchanger (3), load side heat exchanger (
6) and a pressure reduction mechanism (5) for the load side heat exchanger (6)
A main refrigerant circuit (10) that can be connected to the cooling cycle and a heating cycle, a heat storage tank (12) containing a heat storage medium capable of storing heat, and a heat storage medium and refrigerant in the heat storage tank (12). A heat exchange coil (13) for performing heat exchange, a pressure reduction mechanism (17) for the heat exchange coil (13), and the main refrigerant via the pressure reduction mechanism (17) and the heat exchange coil (13). In a regenerative air conditioner equipped with a bypass passage (16) that connects a liquid line (8c) and a gas line (8d) of a circuit (10) so that the refrigerant can be bypassed, the refrigerant circulation path is connected to the A first path in which the refrigerant is condensed in the heat source side heat exchanger (3) and then evaporated in the load side heat exchanger (6); ), the refrigerant is condensed in the heat exchange coil (13) and then transferred to the load side heat exchanger (6).
and the third path where the refrigerant evaporates in the load side heat exchanger (6
), the refrigerant is condensed in the heat exchange coil (13) and then switched to a fourth path where it is evaporated in the heat exchange coil (13). At the same time, heating storage heat cooling operation circulates through the third route and stores warm heat in the heat storage tank (12) at the same time as cooling, and cold storage operates through the fourth route and stores cold heat in the heat storage tank (12) at the same time as heating. A regenerative air conditioner comprising: a control means (25) for switching and controlling the circulation path switching mechanism (51) to perform a thermal heating operation. （２）圧縮機（１）、熱源側熱交換器（３）、該熱源側
熱交換器（３）用の減圧機構（４）、負荷側熱交換器（
６）および該負荷側熱交換器（６）用の減圧機構（５）
を接続し、冷房サイクルと暖房サイクルとに切換え可能
な主冷媒回路（１０）と、蓄熱可能な蓄熱媒体を内蔵す
る蓄熱槽（１２）と、該蓄熱槽（１２）の蓄熱媒体と冷
媒との熱交換を行うための熱交換コイル（１３）と、該
熱交換コイル（１３）用の減圧機構（１７）と、該減圧
機構（１７）および上記熱交換コイル（１３）を介して
上記主冷媒回路（１０）の液ライン（８ｃ）とガスライ
ン（８ｄ）とを冷媒のバイパス可能に接続するバイパス
路（１６）とを備えた蓄熱式空気調和装置において、冷
媒の循環経路を、冷媒が上記熱源側熱交換器（３）で凝
縮されたのち負荷側熱交換器（６）で蒸発する第１経路
、冷媒が上記熱交換コイル（１３）で凝縮されたのち負
荷側熱交換器（６）で蒸発する第３経路、および熱源側
熱交換器（３）で凝縮された冷媒が主冷媒回路（１０）
とバイパス路（１６）とに分流したのち負荷側熱交換器
（６）と熱交換コイル（１３）とで蒸発する第５経路に
切換える循環経路切換機構（５１）と、冷媒が上記第１
、第３経路を循環してそれぞれ通常冷房運転、蓄暖熱冷
房運転を行うとともに、上記第５経路を循環して冷房と
同時に蓄熱槽（１２）に冷熱を蓄える蓄冷熱冷房運転を
行うように上記循環経路切換機構（５１）を切換制御す
る制御手段（２５）とを備えたことを特徴とする蓄熱式
空気調和装置。(2) Compressor (1), heat source side heat exchanger (3), pressure reduction mechanism (4) for the heat source side heat exchanger (3), load side heat exchanger (
6) and a pressure reduction mechanism (5) for the load side heat exchanger (6)
A main refrigerant circuit (10) that can be connected to the cooling cycle and a heating cycle, a heat storage tank (12) containing a heat storage medium capable of storing heat, and a heat storage medium and refrigerant in the heat storage tank (12). A heat exchange coil (13) for performing heat exchange, a pressure reduction mechanism (17) for the heat exchange coil (13), and the main refrigerant via the pressure reduction mechanism (17) and the heat exchange coil (13). In a regenerative air conditioner equipped with a bypass passage (16) that connects a liquid line (8c) and a gas line (8d) of a circuit (10) so that the refrigerant can be bypassed, the refrigerant circulation path is connected to the A first path in which the refrigerant is condensed in the heat source side heat exchanger (3) and then evaporated in the load side heat exchanger (6), and the refrigerant is condensed in the heat exchange coil (13) and then evaporated in the load side heat exchanger (6). The refrigerant is evaporated in the third path, and the refrigerant condensed in the heat source side heat exchanger (3) is transferred to the main refrigerant circuit (10).
a circulation path switching mechanism (51) for switching the refrigerant to a fifth path where the refrigerant is divided into the first path and the bypass path (16) and then evaporated by the load side heat exchanger (6) and the heat exchange coil (13);
, circulating through the third route to perform normal cooling operation and heating storage heat cooling operation, respectively, and circulating through the fifth route to perform cold storage heat cooling operation in which cold heat is stored in the heat storage tank (12) at the same time as cooling. A regenerative air conditioner comprising: a control means (25) for switching and controlling the circulation path switching mechanism (51). （３）圧縮機（１）、熱源側熱交換器（３）、該熱源側
熱交換器（３）用の減圧機構（４）、負荷側熱交換器（
６）および該負荷側熱交換器（６）用の減圧機構（５）
を接続し、冷房サイクルと暖房サイクルとに切換え可能
な主冷媒回路（１０）と、蓄熱可能な蓄熱媒体を内蔵す
る蓄熱槽（１２）と、該蓄熱槽（１２）の蓄熱媒体と冷
媒との熱交換を行うための熱交換コイル（１３）と、該
熱交換コイル（１３）用の減圧機構（１７）と、該減圧
機構（１７）および上記熱交換コイル（１３）を介して
上記主冷媒回路（１０）の液ライン（８ｃ）とガスライ
ン（８ｄ）とを冷媒のバイパス可能に接続するバイパス
路（１６）とを備えた蓄熱式空気調和装置において、冷
媒の循環経路を、冷媒が負荷側熱交換器（６）で凝縮さ
れたのち熱源側熱交換器（３）で蒸発する第２経路、冷
媒が負荷側熱交換器（６）で凝縮されたのち熱交換コイ
ル（１３）で蒸発する第４経路、および吐出後主冷媒回
路（１０）とバイパス路（１６）とに分流して負荷側熱
交換器（６）および熱交換コイル（１３）で凝縮された
冷媒が熱源側熱交換器（３）で蒸発する第６経路に切換
える循環経路切換機構（５１）と、冷媒が上記第２、第
４経路を循環してそれぞれ通常暖房運転、蓄冷熱暖房運
転を行うとともに、上記第６経路を循環して暖房と同時
に蓄熱槽（１２）に暖熱を蓄える蓄暖熱暖房運転を行う
ように上記循環経路切換機構（５１）を切換制御する制
御手段（２５）とを備えたことを特徴とする蓄熱式空気
調和装置。(3) Compressor (1), heat source side heat exchanger (3), pressure reduction mechanism (4) for the heat source side heat exchanger (3), load side heat exchanger (
6) and a pressure reduction mechanism (5) for the load side heat exchanger (6)
A main refrigerant circuit (10) that can be connected to the cooling cycle and a heating cycle, a heat storage tank (12) containing a heat storage medium capable of storing heat, and a heat storage medium and refrigerant in the heat storage tank (12). A heat exchange coil (13) for performing heat exchange, a pressure reduction mechanism (17) for the heat exchange coil (13), and the main refrigerant via the pressure reduction mechanism (17) and the heat exchange coil (13). In a refrigerant air conditioner equipped with a bypass path (16) that connects a liquid line (8c) and a gas line (8d) of a circuit (10) so that the refrigerant can be bypassed, the refrigerant circulates through the refrigerant circulation path. A second path in which the refrigerant is condensed in the side heat exchanger (6) and then evaporated in the heat source side heat exchanger (3), and the refrigerant is condensed in the load side heat exchanger (6) and then evaporated in the heat exchange coil (13). After being discharged, the refrigerant is divided into the main refrigerant circuit (10) and the bypass path (16) and condensed in the load side heat exchanger (6) and heat exchange coil (13), and the refrigerant is transferred to the heat source side heat exchanger. A circulation path switching mechanism (51) switches to a sixth path in which the refrigerant evaporates in the container (3), and the refrigerant circulates through the second and fourth paths to perform normal heating operation and cold storage heat heating operation, respectively. A control means (25) is provided for switching and controlling the circulation route switching mechanism (51) to perform a heat storage heating operation in which warm heat is stored in the heat storage tank (12) at the same time as heating by circulating the route. Features: A heat storage type air conditioner. （４）圧縮機（１）、熱源側熱交換器（３）、該熱源側
熱交換器（３）用の減圧機構（４）、負荷側熱交換器（
６）および該負荷側熱交換器（６）用の減圧機構（５）
を接続し、冷房サイクルと暖房サイクルとに切換え可能
な主冷媒回路（１０）と、蓄熱可能な蓄熱媒体を内蔵す
る蓄熱槽（１２）と、該蓄熱槽（１２）の蓄熱媒体と冷
媒との熱交換を行うための熱交換コイル（１３）と、該
熱交換コイル（１３）用の減圧機構（１７）と、該減圧
機構（１７）および上記熱交換コイル（１３）を介して
上記主冷媒回路（１０）の液ライン（８ｃ）とガスライ
ン（８ｄ）とを冷媒のバイパス可能に接続するバイパス
路（１６）とを備えた蓄熱式空気調和装置において、冷
媒の循環経路を、冷媒が上記熱源側熱交換器（３）で凝
縮されたのち負荷側熱交換器（６）で蒸発する第１経路
、冷媒が負荷側熱交換器（６）で凝縮されたのち熱源側
熱交換器（３）で蒸発する第２経路、熱源側熱交換器（
３）で凝縮された冷媒が主冷媒回路（１０）とバイパス
路（１６）とに分流したのち負荷側熱交換器（６）と熱
交換コイル（１３）とで蒸発する第５経路、および吐出
後主冷媒回路（１０）とバイパス路（１６）とに分流し
て負荷側熱交換器（６）および熱交換コイル（１３）で
凝縮された冷媒が熱源側熱交換器（３）で蒸発する第６
経路に切換える循環経路切換機構（５１）と、冷媒が第
１、第２経路を循環してそれぞれ通常冷房運転、通常暖
房運転を行うとともに、第５、第６経路を循環してそれ
ぞれ蓄冷熱冷房運転、蓄暖熱暖房運転を行うように循環
経路切換機構（５１）を切換制御する制御手段（２５）
とを備えたことを特徴とする蓄熱式空気調和装置。(4) Compressor (1), heat source side heat exchanger (3), pressure reduction mechanism (4) for the heat source side heat exchanger (3), load side heat exchanger (
6) and a pressure reduction mechanism (5) for the load side heat exchanger (6)
A main refrigerant circuit (10) that can be connected to the cooling cycle and a heating cycle, a heat storage tank (12) containing a heat storage medium capable of storing heat, and a heat storage medium and refrigerant in the heat storage tank (12). A heat exchange coil (13) for performing heat exchange, a pressure reduction mechanism (17) for the heat exchange coil (13), and the main refrigerant via the pressure reduction mechanism (17) and the heat exchange coil (13). In a regenerative air conditioner equipped with a bypass passage (16) that connects a liquid line (8c) and a gas line (8d) of a circuit (10) so that the refrigerant can be bypassed, the refrigerant circulation path is connected to the A first path in which the refrigerant is condensed in the heat source side heat exchanger (3) and then evaporated in the load side heat exchanger (6); ), the second path evaporates through the heat source side heat exchanger (
A fifth path in which the refrigerant condensed in step 3) is divided into the main refrigerant circuit (10) and the bypass path (16) and then evaporated in the load-side heat exchanger (6) and the heat exchange coil (13), and a discharge path. The refrigerant that is divided into the rear main refrigerant circuit (10) and the bypass path (16) and condensed in the load side heat exchanger (6) and heat exchange coil (13) is evaporated in the heat source side heat exchanger (3). 6th
The refrigerant circulates through the first and second paths to perform normal cooling operation and normal heating operation, respectively, and the refrigerant circulates through the fifth and sixth paths to perform cold storage heat cooling, respectively. control means (25) for switching and controlling the circulation route switching mechanism (51) to perform heating operation and storage heat heating operation;
A heat storage type air conditioner characterized by comprising: （５）圧縮機（１）、熱源側熱交換器（３）、該熱源側
熱交換器（３）用の減圧機構（４）、負荷側熱交換器（
６）および該負荷側熱交換器（６）用の減圧機構（５）
を接続し、冷房サイクルと暖房サイクルとに切換え可能
な主冷媒回路（１０）と、蓄熱可能な蓄熱媒体を内蔵す
る蓄熱槽（１２）と、該蓄熱槽（１２）の蓄熱媒体と冷
媒との熱交換を行うための熱交換コイル（１３）と、該
熱交換コイル（１３）用の減圧機構（１７）と、該減圧
機構（１７）および上記熱交換コイル（１３）を介して
上記主冷媒回路（１０）の液ライン（８ｃ）とガスライ
ン（８ｄ）とを冷媒のバイパス可能に接続するバイパス
路（１６）とを備えた蓄熱式空気調和装置において、冷
媒の循環経路を冷媒が上記熱源側熱交換器（３）で凝縮
されたのち負荷側熱交換器（６）で蒸発する第１経路、
冷媒が負荷側熱交換器（６）で凝縮されたのち熱源側熱
交換器（３）で蒸発する第２経路、冷媒が上記熱交換コ
イル（１３）で凝縮されたのち負荷側熱交換器（６）で
蒸発する第３経路、および冷媒が負荷側熱交換器（６）
で凝縮されたのち熱交換コイル（１３）で蒸発する第４
経路に切換える循環経路切換機構（５１）と、冷媒が上
記第１、第２経路を循環してそれぞれ通常冷房運転、通
常暖房運転を行うとともに、上記第３経路を循環して蓄
暖熱冷房運転を行った後、第４経路を循環して上記蓄暖
熱冷房運転で蓄熱槽（１２）に蓄えられた暖熱を回収し
て室内を暖房する蓄暖熱回収暖房運転を行うように上記
循環経路切換機構（５１）を切換制御する制御手段（２
５）とを備えたことを特徴とする蓄熱式空気調和装置。(5) Compressor (1), heat source side heat exchanger (3), pressure reduction mechanism (4) for the heat source side heat exchanger (3), load side heat exchanger (
6) and a pressure reduction mechanism (5) for the load side heat exchanger (6)
A main refrigerant circuit (10) that can be connected to the cooling cycle and a heating cycle, a heat storage tank (12) containing a heat storage medium capable of storing heat, and a heat storage medium and refrigerant in the heat storage tank (12). A heat exchange coil (13) for performing heat exchange, a pressure reduction mechanism (17) for the heat exchange coil (13), and the main refrigerant via the pressure reduction mechanism (17) and the heat exchange coil (13). In a regenerative air conditioner equipped with a bypass path (16) that connects the liquid line (8c) and gas line (8d) of the circuit (10) so that the refrigerant can be bypassed, the refrigerant circulates through the refrigerant circulation path from the heat source. A first path that is condensed in the side heat exchanger (3) and then evaporated in the load side heat exchanger (6);
A second path in which the refrigerant is condensed in the load side heat exchanger (6) and then evaporated in the heat source side heat exchanger (3); the refrigerant is condensed in the heat exchange coil (13) and then evaporated in the load side heat exchanger ( 6), and the third path where the refrigerant evaporates in the load side heat exchanger (6).
The fourth condensed in the heat exchange coil (13) is then evaporated in the heat exchange coil (13).
The refrigerant circulates through the first and second paths to perform normal cooling operation and normal heating operation, respectively, and circulates through the third path to perform heating storage cooling operation. After performing this, the above-mentioned circulation is performed so as to perform a heat-storage heat recovery heating operation in which the warm heat stored in the heat storage tank (12) in the heat storage tank (12) is circulated through the fourth path to heat the room. Control means (2) for controlling switching of the route switching mechanism (51)
5) A heat storage type air conditioner characterized by comprising: （６）圧縮機（１）、熱源側熱交換器（３）、該熱源側
熱交換器（３）用の減圧機構（４）、負荷側熱交換器（
６）および該負荷側熱交換器（６）用の減圧機構（５）
を接続し、冷房サイクルと暖房サイクルとに切換え可能
な主冷媒回路（１０）と、蓄熱可能な蓄熱媒体を内蔵す
る蓄熱槽（１２）と、該蓄熱槽（１２）の蓄熱媒体と冷
媒との熱交換を行うための熱交換コイル（１３）と、該
熱交換コイル（１３）用の減圧機構（１７）と、該減圧
機構（１７）および上記熱交換コイル（１３）を介して
上記主冷媒回路（１０）の液ライン（８ｃ）とガスライ
ン（８ｄ）とを冷媒のバイパス可能に接続するバイパス
路（１６）とを備えた蓄熱式空気調和装置において、冷
媒の循環経路を冷媒が上記熱源側熱交換器（３）で凝縮
されたのち負荷側熱交換器（６）で蒸発する第１経路、
冷媒が負荷側熱交換器（６）で凝縮されたのち熱源側熱
交換器（３）で蒸発する第２経路、冷媒が上記熱交換コ
イル（１３）で凝縮されたのち負荷側熱交換器（６）で
蒸発する第３経路、および冷媒が負荷側熱交換器（６）
で凝縮されたのち熱交換コイル（１３）で蒸発する第４
経路に切換える循環経路切換機構（５１）と、冷媒が上
記第１、第２経路を循環してそれぞれ通常冷房運転、通
常暖房運転を行うとともに、上記第４経路を循環して蓄
冷熱暖房運転を行った後、第３経路を循環して上記蓄冷
熱暖房運転で蓄熱槽（１２）に蓄えられた冷熱を回収し
て室内を冷房する蓄冷熱回収冷房運転を行うように上記
循環経路切換機構（５１）を切換制御する制御手段（２
５）とを備えたことを特徴とする蓄熱式空気調和装置。(6) Compressor (1), heat source side heat exchanger (3), pressure reduction mechanism (4) for the heat source side heat exchanger (3), load side heat exchanger (
6) and a pressure reduction mechanism (5) for the load side heat exchanger (6)
A main refrigerant circuit (10) that can be connected to the cooling cycle and a heating cycle, a heat storage tank (12) containing a heat storage medium capable of storing heat, and a heat storage medium and refrigerant in the heat storage tank (12). A heat exchange coil (13) for performing heat exchange, a pressure reduction mechanism (17) for the heat exchange coil (13), and the main refrigerant via the pressure reduction mechanism (17) and the heat exchange coil (13). In a regenerative air conditioner equipped with a bypass path (16) that connects the liquid line (8c) and gas line (8d) of the circuit (10) so that the refrigerant can be bypassed, the refrigerant circulates through the refrigerant circulation path from the heat source. A first path that is condensed in the side heat exchanger (3) and then evaporated in the load side heat exchanger (6);
A second path in which the refrigerant is condensed in the load side heat exchanger (6) and then evaporated in the heat source side heat exchanger (3); the refrigerant is condensed in the heat exchange coil (13) and then evaporated in the load side heat exchanger ( 6), and the third path where the refrigerant evaporates in the load side heat exchanger (6).
The fourth condensed in the heat exchange coil (13) is then evaporated in the heat exchange coil (13).
The refrigerant circulates through the first and second paths to perform normal cooling operation and normal heating operation, respectively, and circulates through the fourth path to perform cold storage heat heating operation. After that, the circulation route switching mechanism ( control means (2) for switching control of (51);
5) A heat storage type air conditioner characterized by comprising: （７）圧縮機（１）と、一組の熱源側熱交換器（３）お
よび該熱源側熱交換器（３）用の減圧機構（４）と、互
いに並列に接続された複数組の負荷側熱交換器（６）〜
（６）および該負荷側熱交換器（６）〜（６）用の減圧
機構（５）〜（５）とを循環接続し、冷房サイクルと暖
房サイクルとに切換え可能な主冷媒回路（１０）を備え
るとともに、蓄熱可能な蓄熱媒体を内蔵する蓄熱槽（１
２）と、該蓄熱槽（１２）の蓄熱媒体と冷媒との熱交換
を行うための熱交換コイル（１３）と、該熱交換コイル
（１３）用の減圧機構（１７）と、該減圧機構（１７）
および上記熱交換コイル（１３）を介して上記主冷媒回
路（１０）の液ライン（８ｃ）とガスライン（８ｄ）と
を冷媒のバイパス可能に接続するバイパス路（１６）と
を備えた蓄熱式空気調和装置において、冷媒の循環経路
を、冷媒が上記熱源側熱交換器（３）で凝縮されたのち
各負荷側熱交換器（６）〜（６）で蒸発する第１経路、
冷媒が各負荷側熱交換器（６）〜（６）で凝縮されたの
ち熱源側熱交換器（３）で蒸発する第２経路、冷媒が一
部の室内ユニット（Ｃ）、（Ｄ）の負荷側熱交換器（６
）、（６）で凝縮されたのち分流して他の室内ユニット
（Ｂ）の負荷側熱交換器（６）と熱交換コイル（１３）
とで蒸発するように循環する第７経路および吐出後分流
して一部の室内ユニット（Ｂ）の負荷側熱交換器（６）
と熱交換コイル（１３）とで凝縮された冷媒が他の室内
ユニット（Ｃ）、（Ｄ）の負荷側熱交換器（６）、（６
）で蒸発する第８経路に切換える循環経路切換機構（５
１）と、冷媒が上記第１、第２経路を循環して通常冷房
運転、通常暖房運転を行うとともに、冷媒が上記第７経
路を循環して一部の室内ユニット（Ｃ）、（Ｄ）では暖
房、他の室内ユニット（Ｂ）では冷房を行いながら蓄熱
槽（１２）に冷熱を蓄える蓄冷熱冷暖同時運転、および
一部の室内ユニット（Ｂ）では暖房、他の室内ユニット
（Ｃ）、（Ｄ）では冷房を行いながら蓄熱槽（１２）に
暖熱を蓄える蓄暖熱冷暖同時運転を行うように上記循環
経路切換機構（５１）を切換制御する制御手段（２５）
とを備えたことを特徴とする蓄熱式空気調和装置。(7) A compressor (1), a set of heat source side heat exchangers (3), a pressure reduction mechanism (4) for the heat source side heat exchangers (3), and multiple sets of loads connected in parallel to each other. Side heat exchanger (6) ~
(6) and the load side heat exchangers (6) to (6), and a main refrigerant circuit (10) which is cyclically connected to the pressure reducing mechanisms (5) to (5) for the load side heat exchangers (6) to be capable of switching between a cooling cycle and a heating cycle. and a heat storage tank (1
2), a heat exchange coil (13) for exchanging heat between the heat storage medium of the heat storage tank (12) and the refrigerant, a pressure reduction mechanism (17) for the heat exchange coil (13), and the pressure reduction mechanism. (17)
and a bypass path (16) that connects the liquid line (8c) and gas line (8d) of the main refrigerant circuit (10) via the heat exchange coil (13) so that the refrigerant can be bypassed. In the air conditioner, the refrigerant circulation path includes a first path in which the refrigerant is condensed in the heat source side heat exchanger (3) and then evaporated in each of the load side heat exchangers (6) to (6);
A second path in which the refrigerant is condensed in each of the load-side heat exchangers (6) to (6) and then evaporated in the heat source-side heat exchanger (3); Load side heat exchanger (6
), (6) and then branched off to the load side heat exchanger (6) and heat exchange coil (13) of another indoor unit (B).
and the seventh path that circulates to evaporate, and the load-side heat exchanger (6) of some indoor units (B) by branching off after discharge.
The refrigerant condensed in the heat exchange coil (13) is transferred to the load side heat exchangers (6), (6) of the other indoor units (C), (D).
), the circulation path switching mechanism (5
1), the refrigerant circulates through the first and second paths to perform normal cooling operation and normal heating operation, and the refrigerant circulates through the seventh path to some of the indoor units (C) and (D). In some indoor units (B), heating is performed, while in other indoor units (B), cold heat is stored in the heat storage tank (12) while cooling is performed. In (D), a control means (25) switches and controls the circulation route switching mechanism (51) so as to carry out simultaneous heating/cooling operation in which warm heat is stored in the heat storage tank (12) while performing cooling.
A heat storage type air conditioner characterized by comprising: