JPH11101523A - Regenerative air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To increase a system structure, easily meet lubricating oil and simplify an operation control. SOLUTION: A primary side circuit 20 in which a primary side refrigerant as a heat source and a secondary side circuit 30 in which a secondary side refrigerant circulates are provided. A regenerative circuit 40 connected to the secondary side circuit 30 is provided so that the secondary side refrigerant circulates. Then, is carried out at least a regenerative operation in which the secondary side refrigerant circulates between the regenerative circuit 40 and a main heat exchanger 11 to store heat, a stored heat using operation in which the secondary refrigerant circulates between the regenerative circuit 40 and an indoor heat exchanger to perform an air conditioning and an ordinary operation in which the secondary side refrigerant circulates the secondary side circuit 30 to perform an air conditioning.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a regenerative air conditioner having a primary circuit and a secondary circuit, and more particularly to a thermal storage circuit.

[0002]

2. Description of the Related Art Conventionally, as disclosed in Japanese Patent Application Laid-Open No. 3-51668, a regenerative air conditioner includes a compressor, a four-way switching valve, a heat source side heat exchanger, an expansion mechanism, a main heat source, and a heat exchanger. A heat storage circuit provided with a primary circuit in which a heat exchanger is connected in order, a secondary circuit in which a main heat exchanger, a conveying means, and a use side heat exchanger are sequentially connected, and a heat storage tank. Is provided. The heat storage circuit includes a heat storage heat exchanger and a heat source side heat radiation heat exchanger connected to the primary circuit, and includes a use side heat radiation heat exchanger connected to the secondary circuit.

The regenerative air conditioner stores cold heat such as ice or warm heat such as hot water in a heat storage tank via a heat storage heat exchanger, while radiating heat from a heat source side in a primary circuit during cooling operation. While increasing the degree of subcooling of the refrigerant with a heat exchanger,
In the secondary-side circuit, the secondary-side refrigerant takes out cold heat in the use-side heat-radiation heat exchanger and transports it to the use-side heat exchanger to cool the room.

[0004] In the heating operation, in the primary side circuit, the refrigerant is evaporated by the heat source side heat radiating heat exchanger to increase the evaporation capacity, and in the secondary side circuit, the use side heat radiating heat exchanger is used in the secondary side circuit. The secondary-side refrigerant takes out the heat and transports it to the use-side heat exchanger to heat the room.

[0005]

However, in the above-mentioned regenerative air conditioner, the heat storage circuit is provided in the primary circuit by connecting the heat storage heat exchanger and the like to the primary circuit. There was a problem that the system configuration was restricted.

In other words, there are various demands for a heat storage type air conditioner such as a device having a large amount of heat stored in a heat storage tank, a device having a small amount of heat, a device having a large capacity of a heat source circuit, and a device having a small capacity. However, in the conventional heat storage type air conditioner, since the heat storage circuit is provided in the primary side circuit and the heat storage circuit and the heat source circuit are paired, a heat storage circuit having a small heat storage capacity and a heat source circuit having a large heat source capacity are not provided. There was a problem that it was difficult to construct various systems such as combinations.

The primary circuit is a refrigeration cycle equipped with a compressor, and it is necessary to take measures for lubricating oil. However, since the primary heat medium of the primary circuit circulates in the heat storage circuit. However, there is a problem that operation control becomes complicated.

The present invention has been made in view of the above points, and has as its object to expand the system configuration, facilitate measures for lubricating oil, and simplify operation control. .

[0009]

[Means for Solving the Problems]

-Summary of the Invention- The present invention includes a primary circuit (20) in which a primary refrigerant serving as a heat source circulates, and a secondary circuit (30) in which a secondary refrigerant circulates. A heat storage circuit (40) connected to the secondary circuit (30) is provided so that the secondary refrigerant circulates. A heat storage operation in which the secondary refrigerant circulates between the heat storage circuit (40) and the main heat exchanger (11) to store heat, and a heat transfer operation in which the secondary refrigerant is transferred between the heat storage circuit (40) and the indoor heat exchanger. At least a heat storage operation for performing air conditioning by circulating air through the space and a normal operation for performing air conditioning by circulating the secondary refrigerant in the secondary circuit (30) are performed.

-Solution Means- First, a first solution means is that a primary heat medium serving as a heat source is first passed through a main heat exchanger (11) so as to circulate through the main heat exchanger (11). A primary side circuit (20) is provided.
Further, the transfer means (31), the main heat exchanger (11), and the use side heat exchanger (33) are connected, and a path between the main heat exchanger (11) and the use side heat exchanger (33) is provided. A secondary circuit (30) through which the secondary heat medium circulates is provided. In addition, the secondary side circuit (30)
The heat storage tank (41) in which the secondary heat medium is connected to the secondary circuit (30) so as to circulate and the heat storage medium is stored.
And a heat storage circuit (40) having the following.

The secondary heat medium circulates between the heat storage circuit (40) and the main heat exchanger (11), and the secondary heat medium is circulated in the primary heat exchanger (11). A heat storage operation in which heat obtained from the heat medium is stored in the heat storage tank (41); and the secondary heat medium circulates between the heat storage circuit (40) and the use side heat exchanger (33) to perform the secondary heat transfer. The heat storage operation in which the side heat medium transports the heat stored in the heat storage tank (41) to the use side heat exchanger (33) for air conditioning, and the secondary heat medium circulates in the secondary circuit (30). The secondary heat medium is configured to at least execute a normal operation of transferring air obtained from the primary heat medium in the main heat exchanger (11) to the use side heat exchanger (33) for air conditioning. Have been.

[0012] In this first solution, the heat storage operation is performed by 2
The secondary heat medium is stored in the heat storage tank (41) by storing heat obtained from the primary heat medium in the main heat exchanger (11). In the operation using heat storage, the secondary heat medium transports the heat stored in the heat storage tank (41) to the use-side heat exchanger (33) to perform air conditioning. Furthermore, in the normal operation, the secondary-side heat medium conveys the heat obtained from the primary-side heat medium in the main heat exchanger (11) to the use-side heat exchanger (33) for air conditioning.

[0013] In a second aspect of the present invention, in the first aspect, in the heat storage utilization operation, the secondary heat medium circulates between the heat storage circuit (40) and the use side heat exchanger (33). At the same time, the secondary heat medium circulates in the secondary circuit (30), and the secondary heat medium is obtained from the cold storage heat of the heat storage tank (41) and the primary heat medium in the main heat exchanger (11). It is configured to convey the cooled heat to the use side heat exchanger (33) to perform cooling.

According to the second solution, the heat storage operation is a cooling operation using heat storage using both cold storage and the cold of the primary circuit (20).

According to a third aspect of the present invention, in the first aspect, in the heat storage utilization operation, the secondary heat medium circulates between the heat storage circuit (40) and the use side heat exchanger (33). At the same time, the secondary heat medium circulates in the secondary circuit (30), and the secondary heat medium is obtained from the primary heat medium in the heat storage tank (41) and the main heat exchanger (11). The heat is transferred to the use-side heat exchanger (33) to perform heating.

In the third solution, the heat storage operation is a heating operation using heat storage using both the heat storage and the heat of the primary circuit (20).

According to a fourth aspect of the present invention, in the first aspect, the primary circuit (20) includes a main heat exchanger (11).
The primary heat medium serving as a cold heat source and a warm heat source is configured to circulate. Further, the heat storage circuit (40) is connected to the secondary side circuit (30), and the heat storage heat exchanger (42) through which the secondary side heat medium flows is provided in a static type heat storage circuit provided in the heat storage tank (41). And the heat storage tank (41) includes:
The heat exchanger (4) for extracting heat storage connected to the secondary circuit (30) so that the heat storage medium exchanges heat with the secondary heat medium.
3) is connected.

In the heat storage operation, the secondary heat medium circulates between the main heat exchanger (11) and the heat storage heat exchanger (42) to perform the cold heat storage operation and the warm heat storage operation. It is configured. In the heat storage use operation, the secondary heat medium circulates between the take-out heat exchanger (43) and the use side heat exchanger (33) to perform the heat storage use cooling operation and the heat storage use heating operation. Is configured. In the normal operation, the secondary heat medium circulates between the main heat exchanger (11) and the use side heat exchanger (33) to perform a normal cooling operation and a normal heating operation. I have.

In the fourth solution, the cold storage operation and the hot storage operation are performed by circulating the secondary heat medium between the main heat exchanger (11) and the heat storage heat exchanger (42). Done. The cooling operation using heat storage and the heating operation using heat storage are performed by circulating the secondary-side heat medium between the take-out heat exchanger (43) and the use-side heat exchanger (33). Further, the normal cooling operation and the normal heating operation are performed by circulating the secondary heat medium between the main heat exchanger (11) and the use side heat exchanger (33).

According to a fifth aspect of the present invention, in the first aspect, the primary circuit (20) includes a main heat exchanger (11).
The primary heat medium serving as a cold heat source and a warm heat source is configured to circulate. Further, the heat storage circuit (40) is connected to the secondary side circuit (30), and the heat storage heat exchanger (42) through which the secondary side heat medium flows is provided in a static type heat storage circuit provided in the heat storage tank (41). And the heat storage tank (41) includes:
A heat storage heat exchanger (43) connected to the secondary circuit (30) is connected so that the heat storage medium and the secondary heat medium exchange heat. In addition, the auxiliary refrigerant circulates between the auxiliary heat source heat exchanger (53) that exchanges heat with the heat storage in the heat storage tank (41) and the auxiliary use heat exchanger (52) that exchanges heat with the secondary heat medium. An auxiliary circuit (50) is provided.

In the heat storage operation, the secondary heat medium circulates between the main heat exchanger (11) and the heat storage heat exchanger (42) to perform the cold heat storage operation and the warm heat storage operation. It is configured. In addition, the heat storage use operation includes a heat storage use cooling operation in which the secondary heat medium circulates between the removal heat exchanger (43) and the use side heat exchanger (33), and an auxiliary refrigerant uses the auxiliary use heat exchanger. (Five
While the auxiliary refrigerant circulates through the auxiliary circuit (50) so that it condenses in 2) and evaporates in the auxiliary heat source heat exchanger (53), the secondary heat medium is connected to the auxiliary use heat exchanger (52) and the use side. Heat exchanger (33)
And a heating operation utilizing heat storage that circulates between the two. In the normal operation, the secondary heat medium circulates between the main heat exchanger (11) and the use side heat exchanger (33) to perform a normal cooling operation and a normal heating operation. I have.

In the fifth solution, in the cold heat storage operation and the warm heat storage operation, the secondary heat medium circulates between the main heat exchanger (11) and the heat storage heat exchanger (42). Done. The cooling operation using heat storage is performed by circulating the secondary-side heat medium between the removal heat exchanger (43) and the use-side heat exchanger (33). While the auxiliary refrigerant circulates through the auxiliary circuit (50) so that the auxiliary refrigerant condenses in the auxiliary heat exchanger (52) and evaporates in the auxiliary heat source heat exchanger (53), the secondary heat medium flows through the auxiliary heat exchanger. (52) and use side heat exchanger (3
3) is performed in a cycle. Further, the normal cooling operation and the normal heating operation are performed by circulating the secondary heat medium between the main heat exchanger (11) and the use side heat exchanger (33).

According to a sixth aspect of the present invention, in the first aspect, the primary circuit (20) includes a main heat exchanger (11).
The primary heat medium is reversibly phase-changed and circulated between the heat exchanger and the heat source side heat exchanger. Further, the heat storage circuit (40) is connected to the secondary side circuit (30), and the heat storage heat exchanger (42) through which the secondary side heat medium flows is provided in a static type heat storage circuit provided in the heat storage tank (41). The heat storage tank (41) has a heat storage extraction heat exchanger (43) connected to the secondary circuit (30) so that the heat storage medium and the secondary heat medium exchange heat. Is connected. In addition, the secondary heat medium and the secondary heat medium that evaporate exchange heat with each other.
An auxiliary passage (4e) including an auxiliary heat exchanger (12) through which the secondary heat medium circulates is provided.

In the heat storage operation, the secondary heat medium circulates between the main heat exchanger (11) and the heat storage heat exchanger (42) to perform the cold heat storage operation and the warm heat storage operation. It is configured. In the heat storage utilizing operation, the heat storage utilizing cooling operation in which the secondary heat medium circulates between the take-out heat exchanger (43) and the use side heat exchanger (33), and the primary heat medium evaporates. While the secondary heat medium circulates between the auxiliary heat exchanger (12) and the take-out heat exchanger (43), the primary heat medium condenses while the primary heat medium condenses, and the use-side heat exchange. It is configured to perform a heat storage utilizing heating operation in which the secondary-side heat medium circulates between the heating device and the heater (33). In normal operation, the secondary heat medium is the main heat exchanger (1
It is configured to circulate between 1) and the use-side heat exchanger (33) to perform normal cooling operation and normal heating operation.

In the sixth solution, in the cold heat storage operation and the warm heat storage operation, the secondary heat medium circulates between the main heat exchanger (11) and the heat storage heat exchanger (42). Done. The cooling operation using heat storage is performed by circulating the secondary-side heat medium between the take-out heat exchanger (43) and the use-side heat exchanger (33). 2 between the auxiliary heat exchanger (12) where the heat medium evaporates and the removal heat exchanger (43).
At the same time that the secondary heat medium circulates, the primary heat medium condenses at the same time between the main heat exchanger (11) and the utilization heat exchanger (33).
The secondary heat medium is circulated. Further, the normal cooling operation and the normal heating operation are performed by circulating the secondary heat medium between the main heat exchanger (11) and the use side heat exchanger (33).

According to a seventh aspect of the present invention, in the first aspect, the primary circuit (20) includes a main heat exchanger (11).
The primary heat medium serving as a cold heat source and a warm heat source is configured to circulate. Further, in the heat storage circuit (40), a heat storage heat exchanger (42) connected to the secondary circuit (30) and through which the secondary heat medium flows is provided in the heat storage tank (41). The vessel (42) is configured as a static heat storage circuit that stores heat in the heat storage medium and takes out the heat storage.

In the heat storage operation, the secondary heat medium circulates between the main heat exchanger (11) and the heat storage heat exchanger (42) to perform the cold heat storage operation and the warm heat storage operation. It is configured. In the heat storage operation, the secondary heat medium circulates between the heat storage heat exchanger (42) and the use heat exchanger (33) to perform the heat storage cooling operation and the heat storage heating operation. Is configured. In addition, the normal operation is configured so that the secondary heat medium circulates between the main heat exchanger (11) and the use-side heat exchanger (33) to perform the normal cooling operation and the normal heating operation. ing.

In the seventh solution, in the cold storage operation and the hot storage operation, the secondary heat medium circulates between the main heat exchanger (11) and the heat storage heat exchanger (42). Done. In the heat storage cooling operation and the heat storage heating operation, the secondary heat medium circulates between the heat storage heat exchanger (42) and the use side heat exchanger (33), and the heat storage cooling operation and the heat storage operation are performed. Use heating operation is performed. Further, the normal cooling operation and the normal heating operation are performed by circulating the secondary heat medium between the main heat exchanger (11) and the use side heat exchanger (33).

According to an eighth aspect of the present invention, in the first aspect, the primary circuit (20) includes a main heat exchanger (11).
The primary heat medium serving as a cold heat source and a warm heat source is configured to circulate. Further, in the heat storage circuit (40), a heat storage heat exchanger (42) connected to the secondary circuit (30) and through which the secondary heat medium flows is provided in the heat storage tank (41). The vessel (42) is configured as a static heat storage circuit that stores heat in the heat storage medium and takes out the heat storage. in addition,
An auxiliary circuit in which an auxiliary refrigerant circulates between an auxiliary heat source heat exchanger (53) that exchanges heat with the heat storage of the heat storage tank (41) and an auxiliary use heat exchanger (52) that exchanges heat with the secondary heat medium. (50) is provided.

The heat storage operation is performed such that the secondary heat medium circulates between the main heat exchanger (11) and the heat storage heat exchanger (42) to perform the cold heat storage operation and the warm heat storage operation. It is configured. In the heat storage operation, the heat storage cooling operation in which the secondary heat medium circulates between the heat storage heat exchanger (42) and the use heat exchanger (33), and the auxiliary refrigerant uses the auxiliary heat exchanger. (52)
The auxiliary heat medium circulates through the auxiliary circuit (50) so that the secondary heat medium circulates in the auxiliary heat source heat exchanger (53) and evaporates in the auxiliary heat source heat exchanger (53). It is configured to perform a heat storage utilizing heating operation that circulates between the heater (33). In the normal operation, the secondary heat medium circulates between the main heat exchanger (11) and the use side heat exchanger (33) to perform a normal cooling operation and a normal heating operation. I have.

According to the eighth solution, in the cold storage operation and the hot storage operation, the secondary heat medium circulates between the main heat exchanger (11) and the heat storage heat exchanger (42). Done. In the cooling operation using heat storage, the secondary-side heat medium is a heat storage heat exchanger (4
It is circulated between 2) and the use side heat exchanger (33). In addition, the heat storage utilizing heating operation is performed while the auxiliary refrigerant circulates through the auxiliary circuit (50) such that the auxiliary refrigerant condenses in the auxiliary use heat exchanger (52) and evaporates in the auxiliary heat source heat exchanger (53).
The secondary heat medium is circulated between the auxiliary use heat exchanger (52) and the use side heat exchanger (33). In the normal cooling operation and the normal heating operation, the secondary heat medium is the main heat exchanger (1).
It is circulated between 1) and the use side heat exchanger (33).

A ninth solution is the heat exchanger according to the eighth solution, wherein the auxiliary heat source heat exchanger of the auxiliary refrigerant circuit (53).
Are provided inside the heat storage tank (41).

In the ninth solution, the heat is directly taken out of the heat storage tank (41).

According to a tenth aspect, in the first aspect, the primary circuit (20) includes a main heat exchanger (1).
The primary heat medium is reversibly phase-changed and circulated between 1) and the heat source side heat exchanger (23). Furthermore,
The heat storage circuit (40) is connected to the secondary side circuit (30) and the heat storage heat exchanger (42) through which the secondary side heat medium flows is a heat storage tank (41).
And the heat storage heat exchanger (42) is configured as a static heat storage circuit that stores heat in a heat storage medium and takes out the heat storage. In addition, an extraction heat exchanger (43) for exchanging heat between the heat storage medium and the secondary heat medium, and the secondary heat medium for exchanging heat between the evaporating primary heat medium and the secondary heat medium. An auxiliary passage (4e) including an auxiliary heat exchanger (12) through which the refrigerant circulates is provided.

The heat storage operation is performed such that the secondary heat medium circulates between the main heat exchanger (11) and the heat storage heat exchanger (42) to perform the cold heat storage operation and the warm heat storage operation. It is configured. In the heat storage utilization operation, the heat storage utilization cooling operation in which the secondary heat medium circulates between the heat storage heat exchanger (42) and the utilization heat exchanger (33), and the primary heat medium evaporates. While the secondary heat medium circulates between the auxiliary heat exchanger (12) and the take-out heat exchanger (43), the primary heat medium condenses while the primary heat medium condenses, and the use-side heat exchange. It is configured to perform a heat storage utilizing heating operation in which the secondary-side heat medium circulates between the heating device and the heater (33). In the normal operation, the secondary heat medium circulates between the main heat exchanger (11) and the use-side heat exchanger (33) to perform a normal cooling operation and a normal heating operation. I have.

In the tenth solution, the cold heat storage operation and the hot heat storage operation are performed by circulating the secondary heat medium between the main heat exchanger (11) and the heat storage heat exchanger (42). Done. Also,
The heat storage cooling operation is performed by circulating the secondary heat medium between the heat storage heat exchanger (42) and the use heat exchanger (33). In the heating operation using heat storage, the primary heat medium is circulated between the auxiliary heat exchanger (12) in which the primary heat medium evaporates and the removal heat exchanger (43) while the primary heat medium circulates. The secondary heat medium is circulated between the main heat exchanger (11) where the medium condenses and the use side heat exchanger (33). Further, the normal cooling operation and the normal heating operation are performed by circulating the secondary heat medium between the main heat exchanger (11) and the use side heat exchanger (33).

According to an eleventh aspect, in the first aspect, the primary circuit (20) includes a main heat exchanger (1).
The primary heat medium is reversibly phase-changed and circulated between 1) and the heat source side heat exchanger (23). Furthermore,
The heat storage circuit (40) is a dynamic heat storage in which a heat storage tank (41), a preheat heat exchanger (45) for preheating the heat storage medium during the cold heat storage operation, and a heat storage heat exchanger (42) are connected in order. While being configured in a circuit, the heat storage heat exchanger (42)
A secondary circuit (30) is connected to exchange heat between the secondary heat medium and the heat storage medium. In addition, the auxiliary heat exchanger (1) that exchanges heat between the high-temperature primary heat medium and the secondary heat medium
2) is connected, and an auxiliary passage (4e) to which the preheating heat exchanger (45) is connected to circulate the secondary heat medium is provided.

In the heat storage operation, the secondary-side heat medium circulates in the auxiliary passage (4e), and the secondary-side heat medium preheats the heat-storage medium in the preheat heat exchanger (45). The cold storage operation in which the medium circulates between the main heat exchanger (11) and the heat storage heat exchanger (42), and the secondary heat medium is the main heat exchanger (11) and the heat storage heat exchanger (42) ). In addition, the heat storage utilizing operation includes a first heat storage utilizing cooling operation in which the secondary heat medium circulates between the heat storage heat exchanger (42) and the use side heat exchanger (33), and a secondary heat medium. Circulates between the heat exchanger for heat storage (42) and the use side heat exchanger (33), while the secondary side heat medium is
A second heat storage cooling operation circulating between the first heat exchanger and the use side heat exchanger (33);
The first heat-storage-based heating operation circulating between the heat exchanger (2) and the use-side heat exchanger (33), and the secondary-side heat medium is operated by the heat-storage heat exchanger (4).
The second heat medium circulating between the main heat exchanger (11) and the use-side heat exchanger (33) at the same time as circulating between the main heat exchanger (11) and the use-side heat exchanger (33). It is configured to perform a heat storage use heating operation. In the normal operation, the secondary heat medium circulates between the main heat exchanger (11) and the use side heat exchanger (33) to perform a normal cooling operation and a normal heating operation. I have.

According to the eleventh solution, in the cold storage operation, the secondary heat medium circulates in the auxiliary passage (4e), and the secondary heat medium preheats the heat storage medium in the preheat heat exchanger (45). While doing
The secondary heat medium consists of a main heat exchanger (11) and a heat storage heat exchanger (4
2), and the heat storage operation is performed by circulating the secondary heat medium between the main heat exchanger (11) and the heat storage heat exchanger (42). Will be In the first cooling operation using heat storage, the secondary-side heat medium is used as the heat storage heat exchanger (4).
It is circulated between 2) and the use side heat exchanger (33),
In the second cooling operation using heat storage, the secondary heat medium circulates between the heat storage heat exchanger (42) and the use side heat exchanger (33), and at the same time, the secondary heat medium is The circulation is performed between (11) and the use side heat exchanger (33). Further, in the first heating operation using heat storage, the secondary-side heat medium is used as the heat storage heat exchanger (4).
It is circulated between 2) and the use side heat exchanger (33),
In the second heating operation using heat storage, the secondary-side heat medium circulates between the heat-storage heat exchanger (42) and the use-side heat exchanger (33), and at the same time, the secondary-side heat medium becomes main heat. It is circulated between the exchanger (11) and the use side heat exchanger (33). Further, the normal cooling operation and the normal heating operation are performed by circulating the secondary heat medium between the main heat exchanger (11) and the use side heat exchanger (33).

The twelfth solution is the first solution, wherein the primary circuit (20) is connected to the main heat exchanger (1).
The primary heat medium is reversibly phase-changed and circulated between 1) and the heat source side heat exchanger (23). Furthermore,
The heat storage circuit (40) is a dynamic heat storage in which a heat storage tank (41), a preheat heat exchanger (45) for preheating the heat storage medium during the cold heat storage operation, and a heat storage heat exchanger (42) are connected in order. While being configured in a circuit, the heat storage heat exchanger (42)
A secondary circuit (30) is connected to exchange heat between the secondary heat medium and the heat storage medium. In addition, the auxiliary heat exchanger (12), which switches between a state in which the high-temperature primary-side heat medium flows and a state in which the primary-side heat medium evaporates, includes a preheat heat exchanger (45) and a heat storage heat exchanger (42). ) Are provided so as to be switchable, and an auxiliary passage (4e) through which the secondary side heat medium circulates is provided.

In the heat storage operation, the secondary-side heat medium circulates in the auxiliary passage (4e), and the secondary-side heat medium preheats the heat-storage medium in the preheating heat exchanger (45). The cold storage operation in which the medium circulates between the main heat exchanger (11) and the heat storage heat exchanger (42), and the secondary heat medium is the main heat exchanger (11) and the heat storage heat exchanger (42) ) To perform the heat storage operation. In addition, the heat storage utilizing operation includes a first heat storage utilizing cooling operation in which the secondary heat medium circulates between the heat storage heat exchanger (42) and the use side heat exchanger (33), and a secondary heat medium. Circulates between the heat exchanger for heat storage (42) and the use side heat exchanger (33), while the secondary side heat medium is
A second heat storage cooling operation circulating between 1) and the use side heat exchanger (33), an auxiliary heat exchanger (12) and a heat storage heat exchanger (42) in which the primary heat medium evaporates. The main heat exchanger (1) in which the primary heat medium condenses while the secondary heat medium circulates between
It is configured to perform a heat storage utilizing heating operation in which the secondary side heat medium circulates between 1) and the use side heat exchanger (33). In normal operation, the secondary heat medium is the main heat exchanger (1
It is configured to circulate between 1) and the use-side heat exchanger (33) to perform normal cooling operation and normal heating operation.

In the twelfth solution, in the cold storage operation, the secondary heat medium circulates in the auxiliary passage (4e), and the secondary heat medium preheats the heat storage medium in the preheat heat exchanger (45). While doing
The secondary heat medium consists of a main heat exchanger (11) and a heat storage heat exchanger (4
2) is performed in a cycle. In addition, warm storage operation
The secondary heat medium consists of a main heat exchanger (11) and a heat storage heat exchanger (4
2) and a warm storage operation is performed. Also,
The first heat storage cooling operation is performed by circulating the secondary heat medium between the heat storage heat exchanger (42) and the use heat exchanger (33). In the cooling operation, the secondary side heat medium circulates between the heat storage heat exchanger (42) and the use side heat exchanger (33), and at the same time, the secondary side heat medium is used with the main heat exchanger (11). It is performed by circulating between the side heat exchanger (33). In the heating operation using heat storage, the primary heat medium circulates between the auxiliary heat exchanger (12) where the primary heat medium evaporates and the heat storage heat exchanger (42) while the primary heat medium circulates. The secondary heat medium is circulated between the main heat exchanger (11) where the medium condenses and the use side heat exchanger (33). Further, the normal cooling operation and the normal heating operation are performed by circulating the secondary heat medium between the main heat exchanger (11) and the use side heat exchanger (33).

According to a thirteenth aspect, in the first aspect, the primary circuit (20) includes a main heat exchanger (1).
In 1), a primary heat medium serving as a cold heat source and a warm heat source is configured to circulate. Further, the heat storage circuit (40) is a dynamic storage system in which a heat storage tank (41), a preheat heat exchanger (45) for preheating the heat storage medium during the cold heat storage operation, and a heat storage heat exchanger (42) are sequentially connected. Type heat storage circuit,
The heat storage heat exchanger (42) is connected to the secondary circuit (30) so as to exchange heat between the secondary heat medium and the heat storage medium. In addition, a heat storage auxiliary heat exchanger (47) that exchanges heat with the secondary refrigerant, and a preheat heat exchanger (4) that exchanges heat with the heat storage medium.
An auxiliary circuit (50) in which an auxiliary refrigerant circulates between the auxiliary circuit and the auxiliary circuit (5) is provided.

In the heat storage operation, the auxiliary refrigerant circulates through the auxiliary circuit (50), the auxiliary refrigerant condenses in the preheating heat exchanger (45) and preheats the heat storage medium, while the secondary heat medium is mainly used. The cold heat storage operation circulating between the heat exchanger (11) and the heat storage heat exchanger (42), and the secondary heat medium is connected between the main heat exchanger (11) and the heat storage heat exchanger (42). It is configured to perform a warm heat storage operation by circulating through the space. In addition, the heat storage utilizing operation includes a first heat storage utilizing cooling operation in which the secondary heat medium circulates between the heat storage heat exchanger (42) and the use side heat exchanger (33), and a secondary heat medium. Circulates between the heat exchanger for heat storage (42) and the use side heat exchanger (33), while the secondary side heat medium is the main heat exchanger (11).
The second heat storage cooling operation circulating between the heat exchanger for use and the use side heat exchanger (33), and the secondary heat medium is transferred between the heat exchanger for heat storage (42) and the use side heat exchanger (33). And the secondary-side heat medium circulates between the heat-storage heat exchanger (42) and the use-side heat exchanger (33), while the secondary-side heat medium is mainly It is configured to perform a second heat storage utilizing heating operation that circulates between the heat exchanger (11) and the use-side heat exchanger (33). In the normal operation, the secondary heat medium circulates between the main heat exchanger (11) and the use side heat exchanger (33) to perform a normal cooling operation and a normal heating operation. I have.

According to the thirteenth solution, in the cold storage operation, the auxiliary refrigerant circulates in the auxiliary circuit (50), and the auxiliary refrigerant condenses in the preheat heat exchanger (45) to preheat the heat storage medium.
The secondary heat medium consists of a main heat exchanger (11) and a heat storage heat exchanger (4
2) and the thermal storage operation
The secondary heat medium is the main heat exchanger (11) and the heat exchanger for heat storage (42)
It is circulated between and. The first heat storage cooling operation is performed by circulating the secondary heat medium between the heat storage heat exchanger (42) and the use side heat exchanger (33). In the use cooling operation, the secondary heat medium circulates between the heat storage heat exchanger (42) and the use side heat exchanger (33), and at the same time, the secondary heat medium communicates with the main heat exchanger (11). It is performed by circulating between the use side heat exchanger (33). Also, the first heat storage utilizing heating operation is performed by circulating the secondary side heat medium between the heat storage heat exchanger (42) and the use side heat exchanger (33).
In the second heating operation using heat storage, the secondary-side heat medium circulates between the heat-storage heat exchanger (42) and the use-side heat exchanger (33), and at the same time, the secondary-side heat medium operates as the main heat exchanger. The circulation is performed between (11) and the use side heat exchanger (33). In the normal cooling operation and the normal heating operation, the secondary heat medium is the main heat exchanger (1).
It is circulated between 1) and the use side heat exchanger (33).

According to a fourteenth aspect, in the first aspect, the primary circuit (20) includes a main heat exchanger (1).
In 1), a primary heat medium serving as a cold heat source and a warm heat source is configured to circulate. Further, the heat storage circuit (40) is a dynamic type in which a heat storage tank (41), a preheat heat exchanger (45) for preheating the heat storage medium during the cold heat storage operation, and a heat storage heat exchanger (42) are sequentially connected. A heat storage circuit is provided, and the heat storage heat exchanger (42) is connected to the secondary circuit (30) so as to exchange heat between the secondary heat medium and the heat storage medium. In addition, a heat storage auxiliary heat exchanger (47) that exchanges heat with the secondary refrigerant, and a preheat heat exchanger (45) that exchanges heat with the heat storage medium.
And an auxiliary circuit (50) in which the auxiliary refrigerant circulates between the auxiliary circuit (50).

In the heat storage operation, the auxiliary refrigerant circulates through the auxiliary circuit (50), the auxiliary refrigerant condenses in the preheating heat exchanger (45) and preheats the heat storage medium, while the secondary heat medium is mainly used. The cold heat storage operation circulating between the heat exchanger (11) and the heat storage heat exchanger (42), and the secondary heat medium is connected between the main heat exchanger (11) and the heat storage heat exchanger (42). It is configured to perform a heat storage operation that circulates between the two. In addition, the heat storage utilizing operation includes a first heat storage utilizing cooling operation in which the secondary heat medium circulates between the heat storage heat exchanger (42) and the use side heat exchanger (33), and a secondary heat medium. Circulates between the heat exchanger for heat storage (42) and the use side heat exchanger (33), and at the same time, the secondary heat medium is connected between the main heat exchanger (11) and the use side heat exchanger (33). A second heat storage cooling operation circulating between the auxiliary refrigerant and the auxiliary refrigerant in the auxiliary circuit (50) such that the auxiliary refrigerant is condensed in the auxiliary heat storage heat exchanger (47) and evaporated in the preheat heat exchanger (45). A first heat storage utilizing heating operation in which the secondary heat medium circulates between the auxiliary heat storage heat exchanger (47) and the use side heat exchanger (33) while circulating; While the auxiliary refrigerant circulates through the auxiliary circuit (50) so as to condense in (47) and evaporate in the preheat heat exchanger (45), the secondary heat medium is connected to the heat storage auxiliary heat exchanger (47) and the use side. Heat exchange Vessel (3
3), and at the same time as the second heat storage heating operation in which the secondary heat medium circulates between the main heat exchanger (11) and the use side heat exchanger (33). It is configured.
In the normal operation, the secondary heat medium circulates between the main heat exchanger (11) and the use-side heat exchanger (33) to perform a normal cooling operation and a normal heating operation. .

According to the fourteenth solution, in the cold storage operation, the auxiliary refrigerant circulates in the auxiliary circuit (50), and the auxiliary refrigerant is condensed in the preheat heat exchanger (45) to preheat the heat storage medium.
The secondary heat medium consists of a main heat exchanger (11) and a heat storage heat exchanger (4
2) and the thermal storage operation
The secondary heat medium is the main heat exchanger (11) and the heat exchanger for heat storage (42)
It is circulated between and. The first heat storage cooling operation is performed by circulating the secondary heat medium between the heat storage heat exchanger (42) and the use heat exchanger (33). In the heat storage cooling operation, the secondary heat medium circulates between the heat storage heat exchanger (42) and the use heat exchanger (33), and at the same time, the secondary heat medium circulates through the main heat exchanger (11). It is circulated between the heat exchanger (33) and the use side heat exchanger (33). In the first heating operation using heat storage, the auxiliary refrigerant circulates through the auxiliary circuit (50) such that the auxiliary refrigerant is condensed in the auxiliary heat storage heat exchanger (47) and evaporated in the preheat heat exchanger (45). On the other hand, the secondary heat medium is circulated between the auxiliary heat storage heat exchanger (47) and the use side heat exchanger (33), and in the second heat storage use heating operation, the auxiliary refrigerant stores heat. While the auxiliary refrigerant circulates through the auxiliary circuit (50) so that it is condensed in the auxiliary heat exchanger (47) and evaporated in the preheat heat exchanger (45), the secondary heat medium is stored in the heat storage auxiliary heat exchanger (47). ) And the use side heat exchanger (33), and at the same time, the secondary heat medium is circulated between the main heat exchanger (11) and the use side heat exchanger (33). Further, the normal cooling operation and the normal heating operation are performed by circulating the secondary heat medium between the main heat exchanger (11) and the use side heat exchanger (33).

According to a fifteenth solution, in the first solution, the primary circuit (20) is connected to the main heat exchanger (1).
In 1), a primary heat medium serving as a cold heat source and a warm heat source is configured to circulate. Furthermore, the heat storage circuit (40) is configured as a dynamic heat storage circuit in which a heat storage tank (41) and a heat storage heat exchanger (42) are connected in order, and the heat storage heat exchanger (42) The heat exchanger is connected to a secondary circuit (30) so that heat is exchanged between the secondary heat medium and the heat storage medium.

The heat storage operation includes a cold heat storage operation in which the secondary heat medium circulates between the main heat exchanger (11) and the heat storage heat exchanger (42). The heat storage operation is performed so as to circulate between the exchanger (11) and the heat storage heat exchanger (42). In addition, the heat storage utilizing operation includes a first heat storage utilizing cooling operation in which the secondary heat medium circulates between the heat storage heat exchanger (42) and the use side heat exchanger (33), and a secondary heat medium. Circulates between the heat exchanger for heat storage (42) and the use side heat exchanger (33), while the secondary side heat medium is
A second heat storage cooling operation circulating between the first heat exchanger and the use side heat exchanger (33);
The first heat-storage-based heating operation circulating between the heat exchanger (2) and the use-side heat exchanger (33), and the secondary-side heat medium is operated by the heat-storage heat exchanger (4).
The second heat medium circulating between the main heat exchanger (11) and the use-side heat exchanger (33) at the same time as circulating between the main heat exchanger (11) and the use-side heat exchanger (33). It is configured to perform a heat storage use heating operation. In the normal operation, the secondary heat medium circulates between the main heat exchanger (11) and the use side heat exchanger (33) to perform a normal cooling operation and a normal heating operation. I have.

According to the fifteenth solution, the cold heat storage operation is performed by circulating the secondary heat medium between the main heat exchanger (11) and the heat storage heat exchanger (42). Heat storage operation is
The secondary heat medium consists of a main heat exchanger (11) and a heat storage heat exchanger (4
2) is performed in a cycle. In the first heat storage utilizing cooling operation, the heat storage utilizing operation is performed by circulating the secondary heat medium between the heat storage heat exchanger (42) and the use side heat exchanger (33). In addition, the second cooling operation using heat storage is
The secondary heat medium circulates between the heat storage heat exchanger (42) and the use side heat exchanger (33), and at the same time, the secondary heat medium is used as the main heat exchanger (11) and the use side heat exchanger. (33). The first heat-storage-using heating operation is performed by circulating the secondary-side heat medium between the heat-storage heat exchanger (42) and the use-side heat exchanger (33). In the use heating operation, the secondary heat medium circulates between the heat storage heat exchanger (42) and the use side heat exchanger (33), and at the same time, the secondary heat medium communicates with the main heat exchanger (11). It is performed by circulating between the use side heat exchanger (33). Further, the normal cooling operation and the normal heating operation are performed by circulating the secondary heat medium between the main heat exchanger (11) and the use side heat exchanger (33).

According to a sixteenth aspect, in the first aspect, the primary circuit (20) includes a main heat exchanger (1).
In 1), a primary heat medium serving as a cold heat source and a warm heat source is configured to circulate. Furthermore, the heat storage circuit (40) is configured as a dynamic heat storage circuit in which a heat storage tank (41) and a heat storage heat exchanger (42) are connected in order, and the heat storage heat exchanger (42) The secondary side circuit (30) is connected to exchange heat between the secondary side heat medium and the thermal storage medium. In addition, the auxiliary refrigerant circulates between the auxiliary heat source heat exchanger (53) that exchanges heat with the heat storage in the heat storage tank (41) and the auxiliary use heat exchanger (52) that exchanges heat with the secondary heat medium. An auxiliary circuit (50) is provided.

The heat storage operation includes a cold heat storage operation in which the secondary heat medium circulates between the main heat exchanger (11) and the heat storage heat exchanger (42). The heat storage operation is performed by circulating between the exchanger (11) and the heat storage heat exchanger (42). In the heat storage utilization operation, the secondary heat medium is composed of a heat storage heat exchanger (42) and a use side heat exchanger (33).
The first heat storage cooling operation circulating between the first heat storage cooling operation and the secondary heat medium is a heat storage heat exchanger (42) and a use heat exchanger (33).
A second heat storage cooling operation in which the secondary heat medium circulates between the main heat exchanger (11) and the use side heat exchanger (33), Circulates between the heat storage heat exchanger (42) and the use side heat exchanger (33), and the secondary heat medium uses the heat storage heat exchanger (42) and the use side. A second heat storage heating operation in which the secondary heat medium circulates between the main heat exchanger (11) and the use side heat exchanger (33) while circulating between the heat exchanger (33) and It is configured to perform. In the normal operation, the secondary heat medium circulates between the main heat exchanger (11) and the use side heat exchanger (33) to perform a normal cooling operation and a normal heating operation. I have.

According to the sixteenth solution, the cold storage operation is performed by circulating the secondary heat medium between the main heat exchanger (11) and the heat storage heat exchanger (42). Heat storage operation is
The secondary heat medium consists of a main heat exchanger (11) and a heat storage heat exchanger (4
2) is performed in a cycle. The first heat storage cooling operation is performed by circulating the secondary heat medium between the heat storage heat exchanger (42) and the use side heat exchanger (33). In the use cooling operation, the secondary heat medium circulates between the heat storage heat exchanger (42) and the use side heat exchanger (33), and at the same time, the secondary heat medium communicates with the main heat exchanger (11). It is performed by circulating between the use side heat exchanger (33). In the first heating operation using heat storage, the auxiliary refrigerant circulates in the auxiliary circuit (50) such that the auxiliary refrigerant condenses in the auxiliary heat exchanger (52) and evaporates in the auxiliary heat source heat exchanger (53). In addition, the secondary heat medium is circulated between the auxiliary use heat exchanger (52) and the use side heat exchanger (33) while the second heat storage use heating operation is performed.
The secondary heat medium circulates between the heat storage heat exchanger (42) and the use side heat exchanger (33), and at the same time, the secondary heat medium is used as the main heat exchanger (11) and the use side heat exchanger. (33). Further, the normal cooling operation and the normal heating operation are two
Secondary heat medium is main heat exchanger (11) and use side heat exchanger (33)
It is circulated between and.

According to a seventeenth aspect, in the first aspect, the primary circuit (20) includes a main heat exchanger (1).
The primary heat medium is reversibly phase-changed and circulated between 1) and the heat source side heat exchanger (23). The heat storage circuit (40) is configured as a dynamic heat storage circuit in which a heat storage tank (41) and a heat storage heat exchanger (42) are sequentially connected, and the heat storage heat exchanger (42) Secondary circuit (30) to exchange heat between secondary heat medium and heat storage medium
It is connected to the. In addition, a heat storage auxiliary heat exchanger (47) that exchanges heat between the heat storage medium and the secondary heat medium, and an auxiliary heat exchanger (12) that exchanges heat between the high-temperature primary heat medium and the secondary heat medium.
Auxiliary passage (4e) through which the secondary heat medium circulates
Is provided.

The heat storage operation includes a cold heat storage operation in which the secondary heat medium circulates between the main heat exchanger (11) and the heat storage heat exchanger (42); The heat storage operation is performed by circulating between the exchanger (11) and the heat storage heat exchanger (42). In the heat storage utilization operation, the secondary heat medium is composed of a heat storage heat exchanger (42) and a use side heat exchanger (33).
And the secondary-side heat medium circulates between the heat-storage heat exchanger (42) and the use-side heat exchanger (33) at the same time as the secondary-side heat transfer. The second heat storage cooling operation in which the medium circulates between the main heat exchanger (11) and the use side heat exchanger (33), and the auxiliary heat storage heat exchanger (47) and the primary side heat medium evaporate. While the secondary heat medium circulates between the auxiliary heat exchanger (12) and the primary heat medium condensing, the secondary heat medium condenses between the main heat exchanger (11) and the use-side heat exchanger (33). Between the first heat storage utilizing heating operation in which the secondary heat medium circulates, and the secondary heat medium between the auxiliary heat storage heat exchanger (47) and the auxiliary heat exchanger (12) in which the primary heat medium evaporates. While circulating, the secondary heat medium circulates between the main heat exchanger (11) where the primary heat medium condenses and the use side heat exchanger (33), and at the same time, the secondary heat medium Exchanger (11) and user-side heat exchange (33) is configured to perform a second thermal storage utilization heating operation circulates between the. In normal operation, the secondary heat medium is the main heat exchanger (1
It is configured to circulate between 1) and the use-side heat exchanger (33) to perform normal cooling operation and normal heating operation.

According to the seventeenth solution, the cold storage operation is performed by circulating the secondary heat medium between the main heat exchanger (11) and the heat storage heat exchanger (42). Heat storage operation is
The secondary heat medium consists of a main heat exchanger (11) and a heat storage heat exchanger (4
2) is performed in a cycle. The first heat storage cooling operation is performed by circulating the secondary heat medium between the heat storage heat exchanger (42) and the use side heat exchanger (33). In the use cooling operation, the secondary heat medium circulates between the heat storage heat exchanger (42) and the use side heat exchanger (33), and at the same time, the secondary heat medium communicates with the main heat exchanger (11). It is performed by circulating between the use side heat exchanger (33). In the first heating operation using heat storage, the secondary heat medium circulates between the auxiliary heat exchanger (47) and the auxiliary heat exchanger (12) in which the primary heat medium evaporates. The main heat exchanger (1
A secondary heat medium is circulated between 1) and the use side heat exchanger (33), and the second heat storage use heating operation is performed by using the heat storage auxiliary heat exchanger (47) and the primary side heat exchanger. The main heat exchanger (11) and the use side heat exchanger (33) where the primary heat medium condenses while the secondary heat medium circulates between the auxiliary heat exchanger (12) where the heat medium evaporates. And at the same time, the secondary heat medium circulates between the main heat exchanger (11) and the use side heat exchanger (33). Further, the normal cooling operation and the normal heating operation are performed by circulating the secondary heat medium between the main heat exchanger (11) and the use side heat exchanger (33).

According to an eighteenth aspect, in the first aspect, the primary circuit (20) includes a main heat exchanger (1).
The primary heat medium is reversibly phase-changed and circulated between 1) and the heat source side heat exchanger (23). Furthermore,
The heat storage circuit (40) consists of a heat storage tank (41) and a heat storage heat exchanger (4
2) and a take-out heat exchanger (43) are sequentially connected to form a dynamic heat storage circuit, and the heat-storage heat exchanger (42) and the take-out heat exchanger (43) Each is connected to the secondary circuit (30) so as to exchange heat between the side heat medium and the heat storage medium. In addition, a heat storage auxiliary heat exchanger that exchanges heat with the heat storage medium and the secondary heat medium (47)
And an auxiliary heat exchanger (12) for exchanging heat between the high-temperature primary heat medium and the secondary heat medium, and an auxiliary passage (4e) for circulating the secondary heat medium is provided. .

The heat storage operation includes a cold heat storage operation in which the secondary heat medium circulates between the main heat exchanger (11) and the heat storage heat exchanger (42). The heat storage operation is performed by circulating between the exchanger (11) and the heat storage heat exchanger (42). In the heat storage operation, the secondary heat medium is removed from the heat exchanger (43) and the heat exchanger (3
3), and the secondary heat medium circulates between the take-out heat exchanger (43) and the use-side heat exchanger (33) at the same time. A second heat storage utilizing cooling operation in which the secondary heat medium circulates between the main heat exchanger (11) and the utilization heat exchanger (33), and a thermal storage auxiliary heat exchanger (47)
The main heat exchanger (11) where the primary heat medium condenses while the secondary heat medium circulates between the heat exchanger and the auxiliary heat exchanger (12) where the primary heat medium evaporates, and the use side heat exchange. A first heat storage utilizing heating operation in which the secondary heat medium circulates between the heat exchanger and the heat storage auxiliary heat exchanger (47) and an auxiliary heat exchanger (12) in which the primary heat medium evaporates. The primary heat medium condenses while the secondary heat medium circulates between the main heat exchanger (11) and the use side heat exchanger (33)
And a second heat storage utilizing heating operation in which the secondary heat medium circulates between the main heat exchanger (11) and the use side heat exchanger (33) at the same time as the secondary heat medium circulates between It is configured to perform. In the normal operation, the secondary heat medium circulates between the main heat exchanger (11) and the use side heat exchanger (33) to perform a normal cooling operation and a normal heating operation. I have.

According to the eighteenth solution, the cold storage operation is performed by circulating the secondary heat medium between the main heat exchanger (11) and the heat storage heat exchanger (42). Heat storage operation is
The secondary heat medium consists of a main heat exchanger (11) and a heat storage heat exchanger (4
2) is performed in a cycle. Further, the first heat storage utilizing cooling operation is performed by circulating the secondary-side heat medium between the take-out heat exchanger (43) and the use-side heat exchanger (33).
In the second cooling operation using heat storage, the secondary-side heat medium circulates between the take-out heat exchanger (43) and the use-side heat exchanger (33), and at the same time, the secondary-side heat medium is used as the main heat exchanger. The circulation is performed between (11) and the use side heat exchanger (33). In the first heating operation using heat storage, the secondary heat medium circulates between the auxiliary heat exchanger (47) and the auxiliary heat exchanger (12) in which the primary heat medium evaporates. The secondary heat medium is circulated between the main heat exchanger (11) where the secondary heat medium condenses and the use side heat exchanger (33), and the second heat storage utilizing heating operation is performed as follows. Main heat exchanger where primary heat medium condenses while secondary heat medium circulates between auxiliary heat exchanger (47) and auxiliary heat exchanger (12) where primary heat medium evaporates At the same time as the secondary heat medium circulates between (11) and the use side heat exchanger (33), the secondary heat medium is connected between the main heat exchanger (11) and the use side heat exchanger (33). It takes place in a cycle. Further, the normal cooling operation and the normal heating operation are performed by circulating the secondary heat medium between the main heat exchanger (11) and the use side heat exchanger (33).

According to a nineteenth solution, in the first solution, the secondary circuit (30) includes a plurality of use-side heat exchangers (33) connected in parallel with each other. A plurality of main heat exchangers (11) are connected in parallel with each other, and a primary circuit (20) is connected to each of the main heat exchangers (11). Furthermore, a plurality of heat storage circuits (40)
The secondary circuits (30) are connected in parallel with each other.

In the nineteenth solution, a system of any combination of heat storage capacity and heat source capacity is constructed.

According to a twentieth solution, in the first solution, the primary circuit (20) is connected to the main heat exchanger (1).
In 1), a primary heat medium serving as a cold heat source and a warm heat source is configured to circulate. Further, in the heat storage circuit (40), a heat storage heat exchanger (42) connected to the secondary circuit (30) and through which the secondary heat medium flows is provided in the heat storage tank (41). The heat storage unit (42) is configured as a static heat storage circuit for storing heat in the heat storage medium and extracting the heat storage, and the heat storage tank (41) exchanges heat between the heat storage medium and the secondary-side heat medium. As described above, the heat storage heat exchanger (43) connected to the secondary circuit (30) is connected.

In the heat storage operation, the secondary heat medium circulates between the main heat exchanger (11) and the heat storage heat exchanger (42) to perform the cold heat storage operation and the warm heat storage operation. It is configured. In the heat storage utilization operation, the secondary heat medium circulates between the take-out heat exchanger (43) and the use side heat exchanger (33), and at the same time, the secondary heat medium is used as the heat storage heat exchanger ( Cooling operation utilizing heat storage circulating between 42) and the use side heat exchanger (33), and the secondary side heat medium passing between the take-out heat exchanger (43) and the use side heat exchanger (33). It is configured to circulate or at least to perform a heat storage use heating operation in which the secondary heat medium circulates between the heat storage heat exchanger (42) and the use side heat exchanger (33). In the normal operation, the secondary heat medium circulates between the main heat exchanger (11) and the use side heat exchanger (33) to perform a normal cooling operation and a normal heating operation. I have.

In the twentieth solution, in the cold heat storage operation and the hot heat storage operation, the secondary heat medium circulates between the main heat exchanger (11) and the heat storage heat exchanger (42). Done. Also,
In the cooling operation using heat storage, the secondary-side heat medium circulates between the take-out heat exchanger (43) and the use-side heat exchanger (33), and at the same time, the secondary-side heat medium flows through the heat-storage heat exchanger (42 ) And the use side heat exchanger (33). In the heating operation using heat storage, the secondary-side heat medium circulates between the take-out heat exchanger (43) and the use-side heat exchanger (33), or the secondary-side heat medium exchanges heat for heat storage. (42) and use side heat exchanger (33)
It is circulated between and. Further, the normal cooling operation and the normal heating operation are performed by circulating the secondary heat medium between the main heat exchanger (11) and the use side heat exchanger (33).

According to a twenty-first solution, in the first solution, the primary circuit (20) is connected to the main heat exchanger (1).
In 1), a primary heat medium serving as a cold heat source and a warm heat source is configured to circulate. Further, in the heat storage circuit (40), a heat storage heat exchanger (42) connected to the secondary circuit (30) and through which the secondary heat medium flows is provided in the heat storage tank (41). The heat storage unit (42) is configured as a static heat storage circuit for storing heat in the heat storage medium and extracting the heat storage, and the heat storage tank (41) exchanges heat between the heat storage medium and the secondary-side heat medium. As described above, the heat storage heat exchanger (43) connected to the secondary circuit (30) is connected. In addition, an auxiliary heat source heat exchanger (5) that exchanges heat with the heat storage in the heat storage tank (41)
3) and an auxiliary heat exchanger that exchanges heat with the secondary heat medium (5
An auxiliary circuit (50) in which an auxiliary refrigerant circulates between the auxiliary circuit and the auxiliary circuit is provided.

In the heat storage operation, the secondary heat medium circulates between the main heat exchanger (11) and the heat storage heat exchanger (42) to perform the cold heat storage operation and the warm heat storage operation. It is configured. In the heat storage utilization operation, the secondary heat medium circulates between the take-out heat exchanger (43) and the use side heat exchanger (33), and at the same time, the secondary heat medium is used as the heat storage heat exchanger ( Heat storage cooling operation circulating between 42) and the use side heat exchanger (33), and the auxiliary refrigerant is condensed in the auxiliary use heat exchanger (52) and evaporated in the auxiliary heat source heat exchanger (53). The secondary storage heat medium circulates between the auxiliary use heat exchanger (52) and the use side heat exchanger (33) while the auxiliary refrigerant circulates through the auxiliary circuit (50). At least configured to do so. In normal operation, the secondary heat medium is the main heat exchanger (1
It is configured to circulate between 1) and the use-side heat exchanger (33) to perform normal cooling operation and normal heating operation.

In the twenty-first solution, in the cold heat storage operation and the hot heat storage operation, the secondary heat medium circulates between the main heat exchanger (11) and the heat storage heat exchanger (42). Done. Also,
In the cooling operation using heat storage, the secondary-side heat medium circulates between the take-out heat exchanger (43) and the use-side heat exchanger (33), and at the same time, the secondary-side heat medium circulates through the heat-storage heat exchanger (42). ) And the use side heat exchanger (33). In addition, the heat storage utilizing heating operation is performed while the auxiliary refrigerant circulates through the auxiliary circuit (50) such that the auxiliary refrigerant condenses in the auxiliary use heat exchanger (52) and evaporates in the auxiliary heat source heat exchanger (53). The secondary heat medium is circulated between the auxiliary use heat exchanger (52) and the use side heat exchanger (33). In addition, the normal cooling operation and the normal heating operation are configured to perform at least a heat storage utilizing heating operation. Further, the normal operation is performed by circulating the secondary heat medium between the main heat exchanger (11) and the use side heat exchanger (33).

According to a twenty-second solution, in the first solution, the primary circuit (20) includes a main heat exchanger (1).
The primary heat medium is reversibly phase-changed and circulated between 1) and the heat source side heat exchanger. Further, in the heat storage circuit (40), a heat storage heat exchanger (42) connected to the secondary circuit (30) and through which the secondary heat medium flows is provided in the heat storage tank (41). The heat storage unit (42) is configured as a static heat storage circuit for storing heat in the heat storage medium and extracting the heat storage, and the heat storage tank (41) exchanges heat between the heat storage medium and the secondary-side heat medium. As described above, the heat storage heat exchanger (43) connected to the secondary circuit (30) is connected. In addition, there is provided an auxiliary passage (4e) including an auxiliary heat exchanger (12) through which the secondary heat medium circulates so that the primary heat medium and the secondary heat medium that evaporate exchange heat. ing.

The heat storage operation is performed such that the secondary heat medium circulates between the main heat exchanger (11) and the heat storage heat exchanger (42) to perform the cold heat storage operation and the warm heat storage operation. It is configured. In the heat storage utilization operation, the secondary heat medium circulates between the take-out heat exchanger (43) and the use side heat exchanger (33), and at the same time, the secondary heat medium is used as the heat storage heat exchanger ( Cooling operation utilizing heat storage circulating between 42) and the use side heat exchanger (33), and between the auxiliary heat exchanger (12) where the primary side heat medium evaporates and the removal heat exchanger (43) Heat storage utilizing heating in which the secondary heat medium circulates between the main heat exchanger (11) where the primary heat medium condenses and the use side heat exchanger (33) while the secondary heat medium circulates And at least driving.
In the normal operation, the secondary heat medium circulates between the main heat exchanger (11) and the use side heat exchanger (33) to perform a normal cooling operation and a normal heating operation. I have.

According to the twenty-second solution, in the cold heat storage operation and the hot heat storage operation, the secondary heat medium circulates between the main heat exchanger (11) and the heat storage heat exchanger (42). Done. Also,
In the heat storage operation, the secondary heat medium is removed from the heat exchanger (4
At the same time as circulating between 3) and the use side heat exchanger (33), the secondary heat medium circulates between the heat storage heat exchanger (42) and the use side heat exchanger (33). Will be In addition, the heating operation using heat storage uses an auxiliary heat exchanger (1) in which the primary heat medium evaporates.
Main heat exchanger (11) in which the primary heat medium condenses while the secondary heat medium circulates between 2) and the take-out heat exchanger (43)
The secondary heat medium is circulated between the heat exchanger and the use-side heat exchanger (33). Also, the normal cooling operation and the normal heating operation are:
The secondary heat medium is composed of the main heat exchanger (11) and the use side heat exchanger (3
3) is performed in a cycle.

According to a twenty-third solution, in the first solution, the conveying means (31) comprises a tank (T1, T2) for storing the secondary heat medium and a heating means for heating the secondary heat medium. A high-pressure generating section (71) for generating a high pressure, and a low-pressure generating section (72) for cooling the secondary-side heat medium to generate a low pressure. The tanks (T1, T2) and the high-pressure generating section (71) are provided. ) To extrude the secondary-side heat medium from the tanks (T1, T2), and communicate the tanks (T1, T2) with the low-pressure generating section (72) to communicate with the tanks (T1, T2). The secondary heat medium is recovered and circulated through the secondary heat medium.

According to the twenty-third solution, the tanks (T1, T2) for storing the secondary heat medium are pressurized or depressurized, and the secondary heat medium is pushed out of the tanks (T1, T2). At (T1, T2), the secondary heat medium is recovered and the secondary heat medium is circulated.

The twenty-fourth solving means is any one of the fifth, eighth, ninth, thirteenth, fourteenth, sixteenth and twenty-first solutions, wherein the conveying means (31) A tank (T1, T2) for storing the secondary heat medium, a heating heat exchanger (71) for heating the secondary heat medium, and a cooling heat exchanger (72) for cooling the secondary heat medium The above heat exchanger for heating (7
The high-pressure secondary heat medium generated in 1) acts on the tanks (T1, T2) to push out the secondary heat medium from the tanks (T1, T2), while the cooling heat exchanger (72) The resulting low pressure 2
The secondary heat medium is collected in the tanks (T1, T2) by causing the secondary heat medium to act on the tanks (T1, T2), and the secondary heat medium is circulated. Furthermore, the compressor (81), the heat exchanger for heating (71), the expansion mechanism (EV), and the heat exchanger for cooling (72) are connected in this order so that the drive refrigerant circulates. A drive circuit in which the refrigerant condenses in the heating heat exchanger (71) and heats the secondary heat medium, while the drive refrigerant evaporates in the cooling heat exchanger (72) and cools the secondary heat medium. (80). In addition, the auxiliary circuit (50) is connected to the heating heat exchanger (71) and the expansion mechanism (E) in the drive circuit (80).
V) and the cooling heat exchanger (72) are connected to the drive circuit (80) in parallel, and the drive refrigerant doubles as the auxiliary refrigerant.

In the twenty-fourth solution, the tanks (T1, T2) storing the secondary-side heat medium are pressurized or decompressed by the heating heat exchanger (71) and the cooling heat exchanger (72). While the secondary heat medium is pushed out from the tanks (T1, T2), the secondary heat medium is recovered and circulated in the tanks (T1, T2). Further, the driving refrigerant in the driving circuit (80) circulates through the heating heat exchanger (71) and the cooling heat exchanger (72) to heat and cool the secondary refrigerant, and circulates in the auxiliary circuit. I do. Then, the driving refrigerant circulates between the auxiliary heat exchanger (52) and the auxiliary heat source heat exchanger (53) to perform the heat storage heating operation.

According to a twenty-fifth aspect, in the twenty-third aspect, the high-pressure generating section (71) of the conveying means (31) is provided.
The low-pressure generating section (72) includes a heating heat exchanger (71) and a cooling heat exchanger (72). In addition, the compressor (8
1), the heat exchanger for heating (71), the expansion mechanism (EV), and the heat exchanger for cooling (72) are connected in this order so that the driving refrigerant circulates. A drive circuit (80) is provided for condensing in the exchanger (71) and heating the secondary heat medium, while evaporating the drive refrigerant in the cooling heat exchanger (72) to cool the secondary heat medium. ing.

In the twenty-fifth solution, the driving circuit (8
The drive refrigerant in 0) circulates through the heating heat exchanger (71) and the cooling heat exchanger (72), and heats and cools the secondary refrigerant to pressurize or cool the tanks (T1, T2). Reduce pressure.

According to a twenty-sixth solution, in the twenty-fourth or twenty-fifth solution, the drive circuit (80) includes a heat exchanger (71) for heating and a heat exchanger (72) for cooling. A radiating heat exchanger (79) is provided to balance the balance.

In the twenty-sixth solution, the driving refrigerant partially radiates heat in the radiating heat exchanger (79), and the heat balance between the heating heat exchanger (71) and the cooling heat exchanger (72) is improved. To balance.

[0080]

Therefore, according to the first to fourth solutions, the heat storage circuit (40) is connected to the secondary circuit (30), and the heat of the primary circuit (20) is reduced by two. Since the heat is stored via the secondary refrigerant, the primary circuit (20) can be constituted by one independent circuit, and the heat source capacity can be reduced by connecting a plurality of primary circuits (20). It can be set arbitrarily. At the same time, several heat storage circuits (40)
The heat storage capacity can be set arbitrarily by connecting.

As a result, a system in which various heat source capacities and heat storage capacities are combined can be constructed, and the degree of freedom of combination can be improved.

Further, since the primary side circuit (20) is only the heat source circuit, the lubricating oil can be easily managed, so that the operation control can be simplified.

Further, since the primary side circuit (20) and the secondary side circuit (30) are provided, existing pipes can be reused.

Further, since the heat storage circuit (40) is provided, it is possible to suppress the maximum power consumption.

Further, according to the fifth solution, since the auxiliary circuit (50) for extracting heat is provided, the heat storage tank (41) can be used without using a low-pressure refrigerant or the like as the secondary refrigerant. The stored heat can be reliably used, and the heating operation using the stored heat can be performed.

According to the sixth solution, since the auxiliary passage (4e) for taking out heat is provided, the heat is stored in the heat storage tank (41) using the primary circuit (20). Since the heating operation using the heat storage can be performed by reliably using the heat, it is not necessary to provide the auxiliary circuit (50) including the compressor (51) as in the second embodiment, and the circuit configuration can be simplified. Can be planned.

Further, according to the seventh solution, since the heat storage and the removal of the heat storage are performed by the heat storage heat exchanger (42), the removal heat exchanger (43) and the circulation pump (44) are used. )
There is no need to provide such components, and the circuit configuration can be simplified.

Further, according to the eighth solution, since the auxiliary circuit (50) for extracting heat is provided, the heat storage tank (41) can be used without using a low-pressure refrigerant or the like as the secondary refrigerant. Heating operation using heat storage can be performed by reliably using the stored heat.

According to the ninth solution, the auxiliary heat source heat exchanger (53) of the auxiliary circuit (50) is arranged in the heat storage tank (41), so that the heat storage medium circulation passage (4b). Can be omitted, so that the circuit configuration can be simplified.

According to the tenth solution, since the auxiliary passage (4e) for taking out heat is provided, heat is stored in the heat storage tank (41) using the primary circuit (20). Since the heating operation using the heat storage can be performed by reliably using the heat, it is not necessary to provide an auxiliary circuit including the compressor (51), and the circuit configuration can be simplified.

According to the eleventh solution, since the heat storage circuit (40) is configured as a dynamic type, the dynamic type heat storage circuit also employs a system combining various heat source capacities and heat storage capacities. It can be constructed, and the degree of freedom of combination can be improved.

According to the twelfth solution, the auxiliary heat exchanger (12) is switched to the preheat heat exchanger (45) and the heat storage heat exchanger (42) so that they can communicate with each other. 2
A heat storage tank (41) without using low-pressure refrigerant or the like as the secondary refrigerant
The heating operation utilizing heat storage can be performed by reliably using the stored heat.

Further, according to the thirteenth solution means, since the auxiliary circuit (50) for preheating the heat storage medium is provided, cold storage of ice or the like can be reliably performed.

According to the fourteenth solution means, since the heat of the heat storage medium is extracted using the preheating heat exchanger (45), the circuit configuration of the heat storage circuit (40) is simplified. Can be.

Further, according to the fifteenth solution, since the preheating heat exchanger is omitted, the circuit configuration can be further simplified.

According to the sixteenth solution, since the heat of the heat storage medium is extracted by the auxiliary circuit (50), the heating operation utilizing the heat storage can be reliably performed.

According to the seventeenth solution, since the heat is taken out by the heat storage auxiliary heat exchanger (47) and the auxiliary heat exchanger (12), a low-pressure refrigerant or the like is used as the secondary refrigerant. In addition, the heating operation using the heat storage can be performed by reliably using the heat stored in the heat storage tank (41).

According to the eighteenth solution, since the heat exchanger for heat storage (42) and the heat exchanger for extraction (43) are provided, the heat exchanger suitable for heat storage and the extraction of heat storage are provided. Therefore, a heat exchanger suitable for the condition can be set, so that heat storage and the like can be efficiently performed.

Further, according to the nineteenth solution, the primary side circuit (20) and the heat storage circuit (40) can be operated in various combinations corresponding to the power demand and the like.

Further, according to the twentieth to twenty-second solutions, it is possible to take out the cold heat by using both the outer melting and the inner melting during the cooling operation using the heat storage. Can be. As a result, rapid cooling can be performed, so that comfort can be improved.

According to the twenty-third solution, the tank (T1, T2) is pressurized and depressurized to circulate the secondary refrigerant, so that the power consumption is reduced as compared with a refrigerant pump or the like. In addition, the frequency of occurrence of a failure or the like can be reduced, and the reliability can be improved.

According to the twenty-fourth solution, the drive circuit (80) and the auxiliary circuit (50) are constituted by one compressor (81), so that the number of parts can be reduced and In addition, the circuit configuration can be simplified. As a result, the size of the entire apparatus can be reduced, and
Cost can be reduced.

Further, according to the twenty-sixth solution, since the heat radiation heat exchanger (79) is provided in the drive circuit (80), the heat radiation amount in the heating heat exchanger (71) and the cooling heat exchanger (79) are provided. 72) can be balanced with the amount of heat absorbed. As a result, it is possible to reliably apply the circulation driving force to the secondary refrigerant of the secondary circuit (20).

[0104]

Embodiment 1 Hereinafter, Embodiment 1 of the present invention will be described in detail with reference to the drawings.

As shown in FIG. 1, the regenerative air conditioner (10) includes a primary side circuit (20), a secondary side circuit (30), and a thermal storage circuit (40) to air-condition a room. It is configured as follows.

The primary circuit (20) is constituted by a vapor compression refrigeration cycle, and includes a compressor (21), a four-way switching valve (22), a heat source side heat exchanger (23), and an electric valve (EV). And the main heat exchanger (1
Main passage (2a) consisting of the primary side of 1) connected in order
To constitute a heat source circuit. The primary circuit (20) is charged with a primary refrigerant as a primary heat medium serving as a heat source, and switches the four-way switching valve (22) to perform a primary cycle between a cooling cycle and a heating cycle. The side refrigerant is configured such that the circulation direction is reversible.

The secondary side circuit (30) includes a conveying means (31) such as a refrigerant pump, a four-way switching valve (32), an electric valve (EV), and an indoor heat exchanger (33) as a use side heat exchanger. ), A main passage (3a) in which a secondary side of a main heat exchanger (11) and an electric valve (EV) are connected in order, and a secondary side refrigerant as a secondary side heat medium is filled. The four-way switching valve (32) is switched so that the circulation direction of the secondary refrigerant is reversible between the cooling cycle and the heating cycle.

The main heat exchanger (11) has a primary refrigerant and a second refrigerant.
The secondary-side circuit (30) is configured to exchange heat with the secondary-side refrigerant. In the cooling operation, the secondary-side refrigerant is cooled by the evaporation heat of the primary-side refrigerant in the main heat exchanger (11). Condensed,
On the other hand, during the heating operation, the secondary-side refrigerant evaporates in the indoor heat exchanger (33) by the latent heat of condensation of the primary-side refrigerant in the main heat exchanger (11). It is configured to condense.

As a feature of the present invention, the heat storage circuit (40) is connected to the secondary circuit (30), and stores the heat of the primary refrigerant in the secondary circuit (30).
It is configured to store heat via the secondary refrigerant. The heat storage circuit (40) includes a heat storage tank (41) in which a heat storage medium such as water is stored, and a heat storage heat exchanger (42) is provided in the heat storage tank (41).
Are housed in a static heat storage circuit, and are configured as an outer melting type that melts cold ice from outside.

One end of the heat storage heat exchanger (42) is connected to the four-way switching valve (32) in the secondary circuit (30) and the indoor electric valve (EV) via an electric valve (EV). The other end is connected to a gas line between the main heat exchanger (11) and the indoor heat exchanger (33) in the secondary circuit (30), and the other end is connected to the heat storage passage (4a). The heat storage heat exchanger (42) is configured to store cold heat such as ice and warm heat such as hot water in the heat storage tank (41).

The heat storage circuit (40) includes a circulation path (4b) for the heat storage medium. The circulation path (4b) has both ends connected to the heat storage tank (41), and has a heat exchanger for removal. (Four
The heat storage side of 3) and the circulation pump (44) are connected in order. A take-out passage (4c) is connected to a secondary side of the take-out heat exchanger (43).
One end of c) is connected to the secondary circuit (30) via an electric valve (EV).
Is connected to the liquid line between the four-way switching valve (32) and the outdoor electric valve (EV), and the other end is connected to the main heat exchanger (11) in the secondary circuit (30) and indoor heat exchange. It is connected to the gas line between the vessel (33). The removal heat exchanger (43) is configured to exchange heat between the heat storage medium and the secondary refrigerant, and the secondary refrigerant is configured to extract heat stored in the heat storage tank (41). .

The primary side circuit (20) is configured as an outdoor unit (1A) including the main heat exchanger (11).
The indoor heat exchanger (33) and the motor-operated valve (EV) in the secondary circuit (30) are configured as an indoor unit (1B), and the heat storage circuit (40) is connected to the transfer means (31) of the secondary circuit (30). ) And the four-way switching valve (32) are included in the heat storage unit (1C).

The regenerative air conditioner (10) includes a cold heat storage operation for storing cold heat and a warm heat storage operation for storing warm heat.
Heat storage cooling operation that cools using cold heat, heat storage heating operation that heats using hot heat, normal cooling operation that cools using the primary refrigerant as a heat source, and normal heating that uses the primary refrigerant as a heat source It is configured to perform a heating operation.

-Operating operation- Next, the operating operation of the regenerative air conditioner (10) will be described.

<Cold Heat Storage Operation> As shown in FIG. 2, when storing cold heat, the primary side circuit (20) includes a four-way switching valve (22).
To the solid line side, and the primary refrigerant discharged from the compressor (21) condenses in the heat source side heat exchanger (23), expands with the electric valve (EV), and evaporates in the main heat exchanger (11). To return to the compressor (21).

The secondary circuit (30) switches the four-way switching valve (32) to the solid line side and closes the electric valve (EV) on the indoor side and the electric valve (EV) in the take-out passage (4c). Then, the transport means (31) is driven. The liquid-phase secondary refrigerant discharged from the conveying means (31) flows to the heat storage heat exchanger (42) and evaporates in the heat storage heat exchanger (42). Circulation is performed by flowing to the main heat exchanger (11), condensing by the latent heat of vaporization of the primary refrigerant, and returning to the conveying means (31). That is, the secondary-side refrigerant cools the heat storage medium in the heat storage tank (41) by the heat storage heat exchanger (42) and stores cold heat such as ice.

<Heat storage cooling operation> As shown in FIG.
When the cooling operation is performed using the stored cold heat, the primary circuit (20) is stopped.

The secondary circuit (30) switches the four-way switching valve (32) to the solid line side and closes the outdoor electric valve (EV) and the electric valve (EV) in the heat storage passage (4a). , Transportation means (3
1) and drive the circulation pump (44). The circulation pump (4
By the driving of 4), the heat storage medium circulates between the heat storage tank (41) and the take-out heat exchanger (43). On the other hand, the liquid-phase secondary refrigerant discharged from the transfer means (31) flows into the indoor heat exchanger (33) and evaporates in the indoor heat exchanger (33). Then, the refrigerant flows through the take-out heat exchanger (43), is condensed by the cold heat of the heat storage medium, and returns to the conveying means (31). That is, the secondary-side refrigerant conveys the cold heat of the heat storage medium to the indoor heat exchanger (33) to cool the room.

<Normal Cooling Operation> As shown in FIG. 4, when performing a normal cooling operation using the primary refrigerant as a heat source, the primary circuit (20) moves the four-way switching valve (22) to the solid line side. switching,
The primary refrigerant discharged from the compressor (21) is condensed in the heat source side heat exchanger (23), expanded by the electric valve (EV), evaporated in the main heat exchanger (11), and then compressed (21). Return to the circulation.

The secondary circuit (30) switches the four-way switching valve (32) to the solid line side, and closes the motor-operated valve (EV) in the heat storage passage (4a) and the motor-operated valve (EV) in the extraction passage (4c). In this state, the transport means (31) is driven. The liquid-phase secondary refrigerant discharged from the transfer means (31) flows into the indoor heat exchanger (33) and evaporates in the indoor heat exchanger (33).
Circulation is performed by flowing to the main heat exchanger (11), condensing by the latent heat of vaporization of the primary refrigerant, and returning to the conveying means (31). That is, the above 2
The secondary refrigerant conveys cold heat, which is latent heat of evaporation of the primary refrigerant, to the indoor heat exchanger (33) to cool the room.

<Heat Heat Storage Operation> As shown in FIG. 5, when storing heat, the primary circuit (20) includes a four-way switching valve (22).
To the broken line side, the primary refrigerant discharged from the compressor (21) is condensed in the main heat exchanger (11), expanded by the electric valve (EV), and evaporated in the heat source side heat exchanger (23). To return to the compressor (21).

The secondary circuit (30) switches the four-way switching valve (32) to the broken line side and closes the electric valve (EV) on the indoor side and the electric valve (EV) in the take-out passage (4c). Then, the transport means (31) is driven. The liquid-phase secondary refrigerant discharged from the transfer means (31) flows to the main heat exchanger (11) and evaporates with the latent heat of condensation of the primary refrigerant, after which the secondary refrigerant is converted into heat storage heat. The heat is transferred to the heat exchanger (42), condensed in the heat storage heat exchanger (42), and returned to the conveying means (31). That is, the secondary-side refrigerant heats the heat storage medium in the heat storage tank (41) in the heat storage heat exchanger (42) to store heat such as hot water.

<Heating operation using heat storage> As shown in FIG.
When performing the heating operation using the stored heat, the primary circuit (20) is stopped.

The secondary side circuit (30) switches the four-way switching valve (32) to the broken line side and closes the electric valve (EV) on the outdoor side and the electric valve (EV) in the heat storage passage (4a) in a closed state. , Transportation means (3
1) and drive the circulation pump (44). The circulation pump (4
By the driving of 4), the heat storage medium circulates between the heat storage tank (41) and the take-out heat exchanger (43). On the other hand, the liquid-phase secondary-side refrigerant discharged from the transfer means (31) flows into the removal heat exchanger (43) and evaporates with the heat of the heat storage medium.
The secondary refrigerant flows through the indoor heat exchanger (33), condenses in the indoor heat exchanger (33), and circulates back to the transporting means (31). That is, the secondary-side refrigerant conveys the heat of the heat storage medium to the indoor heat exchanger (33) to heat the room.

<Normal Heating Operation> As shown in FIG. 7, when performing normal heating operation using the primary refrigerant as a heat source, the primary circuit (20) moves the four-way switching valve (22) to the broken line side. switching,
The primary refrigerant discharged from the compressor (21) is supplied to the main heat exchanger (1).
Condensed in 1), expanded by an electric valve (EV), evaporated in the heat source side heat exchanger (23) and returned to the compressor (21).

The secondary circuit (30) switches the four-way switching valve (32) to the broken line side and closes the electric valve (EV) of the heat storage passage (4a) and the electric valve (EV) of the take-out passage (4c). In this state, the transport means (31) is driven. The liquid-phase secondary refrigerant discharged from the conveying means (31) flows into the main heat exchanger (11) and evaporates with the latent heat of condensation of the primary refrigerant, and then evaporates from the indoor heat exchanger (3).
The circulation is carried out to 3), which is condensed in the indoor heat exchanger (33) and returned to the conveying means (31). That is, the secondary refrigerant is
The indoor heat exchanger (33) transfers the heat, which is the latent heat of condensation of the primary refrigerant.
To heat the room.

<Other Operation> In this embodiment, the cooling operation using heat storage and the normal cooling operation are operated independently of each other. However, the combined operation in which the cooling operation using heat storage and the normal cooling operation are performed simultaneously is performed. You may. In other words, the secondary-side refrigerant evaporated in the indoor heat exchanger (33) flows separately into the take-out heat exchanger (43) and the main heat exchanger (11), and after being condensed, merges and conveys to the conveying means (31). The return to ()) may be performed.

Further, in the present embodiment, the heating operation using the heat storage and the normal heating operation are operated independently of each other. However, a combined operation of simultaneously performing the heating operation using the heat storage and the normal heating operation may be performed. . That is, the transport means (31)
The refrigerant on the secondary side is separated into the heat exchanger for extraction (43) and the main heat exchanger (11) and evaporates, and then the secondary refrigerant merges and condenses in the indoor heat exchanger (33). The circulation returning to the conveying means (31) may be performed.

-Effects of Embodiment- As described above, according to the first embodiment, the heat storage circuit (40)
Is connected to the secondary circuit (30), and the heat of the primary circuit (20) is stored via the secondary refrigerant. Therefore, the primary circuit (20) is connected by one independent circuit. The heat source capacity can be arbitrarily set by connecting a plurality of primary side circuits (20). At the same time,
By connecting the plurality of heat storage circuits (40), the heat storage capacity can be set arbitrarily.

As a result, a system in which various heat source capacities and heat storage capacities are combined can be constructed, and the degree of freedom of combination can be improved.

Further, since the primary side circuit (20) is only the heat source circuit, the lubricating oil can be easily managed, so that the operation control can be facilitated.

Since the primary side circuit (20) and the secondary side circuit (30) are provided, the existing piping can be reused.

Further, since the heat storage circuit (40) is provided, the maximum power consumption can be suppressed.

-Modification- In the present embodiment, the primary refrigerant and the secondary refrigerant may be the same refrigerant or different refrigerants. In particular, a low-pressure refrigerant, for example, R134a is used as the secondary refrigerant. Thus, high-temperature heat storage can be performed.

[0135]

[Embodiment 2] In this embodiment, as shown in FIG. 8, the heat storage circuit (40) is of a static type and the outer melting type as in Embodiment 1, but the heating operation using heat storage is performed. An auxiliary circuit (50) for performing the operation is provided.

The auxiliary circuit (50) includes a compressor (51), an auxiliary circuit side of an auxiliary heat exchanger (52), an electric valve (EV), and an auxiliary circuit side of an auxiliary heat source heat exchanger (53). Auxiliary circuit (50) consisting of a vapor compression refrigeration cycle connected in order
Is condensed in the auxiliary use heat exchanger (52), while being evaporated in the auxiliary heat source heat exchanger (53).

The auxiliary heat source heat exchanger (53) is configured such that the heat storage side is connected to the circulation passage (4b), the heat storage medium and the auxiliary refrigerant exchange heat, and the auxiliary refrigerant evaporates by the heat of the heat storage medium. ing. The auxiliary heat exchanger (5
The use passage (4d) is connected to 2), and the use passage (4d)
One end of the four-way switching valve (32) in the secondary circuit (30)
Connected to the liquid line between the electric valve (EV)
The other end is an indoor heat exchanger (33) in the secondary circuit (30)
And the main heat exchanger (11) is connected to the gas line.

The auxiliary use heat exchanger (52)
The secondary refrigerant and the auxiliary refrigerant exchange heat with each other. Other configurations are the same as in the first embodiment.

-Operation- Next, a description will be given of a heating operation utilizing heat storage in the regenerative air conditioner (10).
This is a case where the heating operation is performed using the heat stored in 1), and as shown in FIG. 8, the primary side circuit (20) is stopped.

The secondary circuit (30) switches the four-way switching valve (32) to the solid line side, and drives the outdoor electric valve (EV), the electric valve (EV) of the heat storage passage (4a) and the extraction passage (4c). In a state where the electric valve (EV) is closed, the conveying means (31) and the circulation pump (44) are driven, and the auxiliary circuit (50) is operated. By driving the circulation pump (44), the heat storage medium circulates between the heat storage tank (41), the auxiliary heat source heat exchanger (53), and the take-out heat exchanger (43), while supporting the auxiliary circuit (50). The refrigerant is discharged from the compressor (51) and is used as an auxiliary heat exchanger (5
Condensed in 2), depressurized by an electric valve (EV), evaporated in an auxiliary heat source heat exchanger (53), and circulated back to the compressor (51).

Further, the secondary refrigerant in the liquid phase discharged from the conveying means (31) flows through the use passage (4d), evaporates in the auxiliary use heat exchanger (52) by the latent heat of condensation of the auxiliary refrigerant, and then evaporates. ,
The secondary refrigerant flows into the indoor heat exchanger (33), condenses in the indoor heat exchanger (33), and circulates back to the transport means (31). That is, the secondary-side refrigerant conveys the heat of the heat storage medium to the indoor heat exchanger (33) via the auxiliary refrigerant to heat the room.

The other cold storage operation is the same as that of the first embodiment. At this time, the electric valve (EV) of the use passageway (4d) is closed except for the heating operation using the heat storage using the normal heating operation. .

-Effects of Embodiment- As described above, according to the second embodiment, since the auxiliary circuit (50) for extracting heat is provided, a low-pressure refrigerant or the like is used as the secondary refrigerant. In addition, the heating operation using the heat storage can be performed by reliably using the heat stored in the heat storage tank (41). Other effects are the same as those of the first embodiment.

[0144]

[Embodiment 3] In this embodiment, as shown in FIG. 9, the heat storage circuit (40) is of a static type and an outer melting type as in Embodiment 1, Instead of the circuit (50), an auxiliary passage (4e) for performing a heating operation using heat storage is provided.

The auxiliary passage (4e) is connected to the auxiliary heat exchanger (12).
And one end is connected to the gas side of the take-out passage (4c) via a one-way valve (CV), while the other end is connected to a four-way circuit in the secondary circuit (30). It is connected between the switching valve (32) and the electric valve (EV) on the indoor side. A bypass path (2b) is connected to the primary side of the auxiliary heat exchanger (12). One end of the bypass path (2b) is connected to a main circuit in the primary circuit (20) via an electric valve (EV). The other end is connected between the heat exchanger (11) and the electric valve (EV), and the other end is connected to the suction side of the compressor (21) in the primary circuit (20). The auxiliary heat exchanger (12) is configured to exchange heat between the primary refrigerant and the secondary refrigerant.
In addition, a one-way valve (CV) is provided on the gas side of the bypass passage (2b).
Is provided. Other configurations are the same as in the first embodiment.

-Operation- Next, a description will be given of a heating operation utilizing heat storage in the regenerative air conditioner (10).
In the case where the heating operation is performed using the heat stored in 1), as shown in FIG. 9, the primary circuit (20) switches the four-way switching valve (22) to the solid line side, and Close the electrically operated valve (EV) in the passage (2a). In this state,
The primary refrigerant discharged from the compressor (21) is supplied to the main heat exchanger (1).
Condensed in 1), expanded by the electric valve (EV) in the bypass passage (2b), evaporated in the auxiliary heat exchanger (12) and returned to the compressor (21).

The secondary circuit (30) switches the four-way switching valve (32) to the solid line side and closes the transfer means (31) and the circulating pump while the electric valve (EV) of the heat storage passage (4a) is closed. Drive (44). By driving the circulation pump (44), the heat storage medium circulates between the heat storage tank (41) and the removal heat exchanger (43). On the other hand, the liquid-phase secondary refrigerant discharged from the transfer means (31) flows through the removal passage (4c) and also flows into the main heat exchanger (11). The secondary-side refrigerant flowing through the take-out passage (4c) exchanges heat with the heat storage medium in the take-out heat exchanger (43) to evaporate, and then flows through the auxiliary passage (4e) to become the auxiliary heat exchanger (12). Then, heat exchange with the primary-side refrigerant is performed to condense, and the flow returns to the conveying means (31).

The secondary refrigerant flowing into the main heat exchanger (11) exchanges heat with the primary refrigerant and evaporates. Thereafter, the secondary refrigerant flows into the indoor heat exchanger (33) and evaporates. The circulation is performed by condensing in the vessel (33) and returning to the conveying means (31). That is, the above 2
The secondary refrigerant transfers the heat of the heat storage medium to the indoor heat exchanger (33) via the primary refrigerant to heat the room.

The transfer of heat in the above-described heating operation utilizing heat storage will be described with reference to a Mollier diagram. As shown in FIG. 10, first, the primary refrigerant is transferred from point A to point B by the compressor (21).
, Condensed in the main heat exchanger (11), changed phase to point C, and depressurized to point D by an electric valve (EV). The auxiliary heat exchanger (12)
And the phase changes to point A, and returns to the compressor (21).

On the other hand, the secondary refrigerant in the liquid phase is pressurized from the point a to the point b by the conveying means (31), and the secondary refrigerant flowing in the discharge passage (4c) is discharged from the discharge passage (4c). Electric valve (EV)
To reduce the pressure to point c. The secondary-side refrigerant exchanges heat with the heat-storing medium W that has warmed in the take-out heat exchanger (43), evaporates, and changes phase to point d. The evaporated secondary refrigerant flows into the auxiliary heat exchanger (12), exchanges heat with the primary refrigerant, condenses with the latent heat of evaporation (DA) of the primary refrigerant, and a
The state changes to a point and returns to the transporting means (31).

Further, a part of the secondary refrigerant at the point b flows into the main heat exchanger (11).
It exchanges heat with the primary refrigerant, and the latent heat of condensation of the primary refrigerant (B ~
It evaporates in C) and changes phase to point e. The evaporated secondary-side refrigerant flows into the indoor heat exchanger (33), exchanges heat with the indoor air to heat the indoor air, condenses, and changes phase to the point f, where a
The state returns to the conveying means (31) in the state of the point. Other cold storage operation is the same as that of the first embodiment, but the combined heating operation of performing the normal heating operation while using the stored heat is not performed.

-Effects of Embodiment- As described above, according to the third embodiment, since the auxiliary passage (4e) for taking out heat is provided, heat is stored using the primary circuit (20). Since the heating operation using the heat storage can be performed by reliably using the heat stored in the tank (41), it is necessary to provide the auxiliary circuit (50) including the compressor (51) as in the second embodiment. In addition, the circuit configuration can be simplified. Other effects are the same as those of the first embodiment.

[0153]

Embodiment 4 In this embodiment, as shown in FIG. 11, the circulation passage (4b) in Embodiment 1 is omitted,
The heat storage heat exchanger (42) is configured to serve both as heat storage and the extraction of the heat storage, and the heat storage circuit (40) is configured to be a static type and an internal melting type for melting cold ice from inside. Have been.

That is, in the present embodiment, the extraction passage (4c) is connected to the heat storage passage (4a) of the first embodiment. The take-out passage (4c) includes a motor-operated valve (EV), one end of which has a heat storage heat exchanger (42) in the heat storage passage (4a) and the motor-operated valve (EV).
The other end is connected between the motor-operated valve (EV) and the four-way switching valve (32) in the secondary circuit (30). Other configurations are the same as in the first embodiment.

-Operation- Next, the operation of the regenerative air conditioner (10) will be described. The regenerative cooling operation and the regenerative heating operation are different from those of the first embodiment. Are the same, only the operation using the heat storage will be described. In cold storage operation, take-out passage (4c)
Motorized valves (EV) are closed.

<Cooling Operation Utilizing Heat Storage> When performing cooling operation using the stored cold heat, the primary circuit (20) is stopped while the secondary circuit (30) is, as shown in FIG. The four-way switching valve (32) is switched to the broken line side, and the outdoor electric valve (E
The conveying means (31) is driven in a state where the electric valve (EV) of the V) and the heat storage passage (4a) is closed.

As shown by the solid arrow in FIG. 11, the secondary refrigerant in the liquid phase discharged from the transfer means (31) flows into the indoor heat exchanger (33), and then flows into the indoor heat exchanger (33). After that, the secondary-side refrigerant flows through the heat storage passage (4a), is condensed by the heat of the heat storage medium in the heat storage heat exchanger (42), flows through the extraction passage (4c), and is conveyed by the conveying means (31). Return to the circulation.
That is, the secondary-side refrigerant conveys the cold heat of the heat storage medium to the indoor heat exchanger (33) to cool the room.

<Heating Operation Utilizing Heat Storage> When performing the heating operation using the stored heat, the primary circuit (20) stops while the secondary circuit (30) operates as shown in FIG. The four-way switching valve (32) is switched to the solid line side, and the outdoor electric valve (E
The conveying means (31) is driven in a state where the electric valve (EV) of the V) and the heat storage passage (4a) is closed.

As shown by a chain line arrow in FIG. 11, the secondary refrigerant in the liquid phase discharged from the transfer means (31) flows from the extraction passage (4c) through the heat storage passage (4a) to exchange heat for heat storage. The secondary refrigerant evaporates by the heat of the heat storage medium in the heat exchanger (42), and then flows into the indoor heat exchanger (33), condenses in the indoor heat exchanger (33), and returns to the conveying means (31). Perform circulation. That is, the secondary-side refrigerant conveys the heat of the heat storage medium to the indoor heat exchanger (33) to heat the room.

-Effects of Embodiment- As described above, according to the fourth embodiment, the heat storage heat exchanger (42) stores heat and takes out the heat storage. There is no need to provide a take-out heat exchanger (43), a circulation pump (44), etc., and the circuit configuration can be simplified. Other effects are the same as those of the first embodiment.

[0161]

Fifth Embodiment In this embodiment, as shown in FIG. 12, the heat storage circuit (40) is of the static type and the inner melting type as in the fourth embodiment, but is different from that of the second embodiment.
An auxiliary circuit (50) similar to that described above is provided.

That is, in this embodiment, as in the fourth embodiment, the take-out passage (4c) is provided, and the circulation passage (4b) having the circulation pump (44) is connected to the heat storage tank (41). On the other hand, in the auxiliary circuit (50), the compressor (51), the auxiliary use heat exchanger (52), the motor-operated valve (EV), and the auxiliary heat source heat exchanger (53) are connected in order similarly to the second embodiment. The auxiliary heat source heat exchanger (53) is connected to the circulation passage (4b), and the auxiliary use heat exchanger (52) is connected to the use passage (4d).
It is connected to the. The use passage (4d) includes a motor-operated valve (EV) similarly to the second embodiment, and has one end connected to the four-way switching valve (32) in the secondary circuit (30) and the outdoor motor-operated valve. The other end is connected to the gas line between the indoor heat exchanger (11) and the main heat exchanger (11) in the secondary circuit (30). I have.
Other configurations are the same as in the fourth embodiment.

-Operating operation- Next, a description will be given of a heating operation utilizing heat storage in the regenerative air conditioner (10).
This is a case where the heating operation is performed using the heat stored in 1), and the primary circuit (20) is stopped as shown in FIG.

The secondary circuit (30) switches the four-way switching valve (32) to the solid line side, and drives the outdoor electric valve (EV), the electric valve (EV) of the heat storage passage (4a) and the extraction passage (4c). In a state where the electric valve (EV) is closed, the conveying means (31) and the circulation pump (44) are driven, and the auxiliary circuit (50) is operated. By driving the circulation pump (44), the heat storage medium circulates between the heat storage tank (41) and the auxiliary heat source heat exchanger (53), while the auxiliary refrigerant of the auxiliary circuit (50) is supplied from the compressor (51). It is discharged, condensed in the auxiliary heat exchanger (52), and is electrically driven (E
The pressure is reduced in V), and the circulation is performed by returning to the compressor (51) after evaporating in the auxiliary heat source heat exchanger (53).

Further, the liquid-phase secondary refrigerant discharged from the conveying means (31) flows through the use passage (4d) and evaporates in the auxiliary use heat exchanger (52) by the latent heat of condensation of the auxiliary refrigerant. ,
The secondary refrigerant flows into the indoor heat exchanger (33), condenses in the indoor heat exchanger (33), and circulates back to the transport means (31). That is, the secondary-side refrigerant conveys the heat of the heat storage medium to the indoor heat exchanger (33) via the auxiliary refrigerant to heat the room.

The other operations such as the cold storage operation are the same as those of the fourth embodiment. At this time, the motor-operated valve (EV) in the use passage (4d) is closed.

-Effects of Embodiment- As described above, according to the fifth embodiment, since the auxiliary circuit (50) for extracting heat is provided, a low-pressure refrigerant or the like is used as the secondary refrigerant. In addition, the heating operation using the heat storage can be performed by reliably using the heat stored in the heat storage tank (41). Other effects are the same as those of the fourth embodiment.

[0168]

[Embodiment 6] In this embodiment, as shown in FIG. 13, the heat storage circuit (40) is of the static type and the inside melting type, as in the case of the embodiment 5;
The auxiliary heat source heat exchanger (53) is disposed inside the heat storage tank (41).

That is, the auxiliary circuit (50) of the present embodiment
Since the auxiliary heat source heat exchanger (53) is installed inside the heat storage tank (41), the auxiliary refrigerant directly exchanges heat with the heat storage medium stored in the heat storage tank (41). .
Therefore, in the present embodiment, the circulation passage (4b) as in the fifth embodiment is omitted.

-Operation- The heating operation using heat storage in the present embodiment is the same as that of the fifth embodiment as shown in FIG.
The auxiliary refrigerant of (0) is discharged from the compressor (51), condensed in the auxiliary heat exchanger (52), decompressed by the electric valve (EV), and decompressed by the auxiliary heat source heat exchanger (53). The heat is exchanged with the heat storage medium of (1) to evaporate and return to the compressor (51).

The liquid-phase secondary refrigerant discharged from the conveying means (31) flows through the use passage (4d), and is supplied to the auxiliary use heat exchanger (5).
In 2), the secondary refrigerant evaporates with the latent heat of condensation of the auxiliary refrigerant, and then the secondary refrigerant flows into the indoor heat exchanger (33) and
A circulation is carried out in 3) after being condensed and returned to the conveying means (31). That is, the secondary-side refrigerant conveys the heat of the heat storage medium to the indoor heat exchanger (33) via the auxiliary refrigerant to heat the room.

Other operations such as the cold storage operation are the same as those of the fourth embodiment. At this time, the electric valve (EV) of the use passage (4d) is closed.

-Effects of Embodiment- As described above, according to the sixth embodiment, the auxiliary circuit (50)
Since the auxiliary heat source heat exchanger (53) is arranged in the heat storage tank (41), the circulation passage (4b) of the fifth embodiment can be omitted, so that the circuit configuration can be simplified. . Other effects are the same as those of the fourth embodiment.

[0174]

[Embodiment 7] In this embodiment, as shown in FIG. 14, the heat storage circuit (40) is of the static type and the inside melting type as in the case of the embodiment 4, but the embodiment 3
An auxiliary passage (4e) similar to that described above is provided.

That is, in the present embodiment, the take-out passage (4c) is provided as in Embodiment 4, and the circulating passage (4b) having the circulating pump (44) and the take-out heat exchanger (43) is provided in the heat storage tank. Connected to (41). The take-out heat exchanger (43) is the take-out heat exchanger (43) of the first embodiment.
Unlike the above, it is configured to take out only the heat of the heat storage medium.

On the other hand, the auxiliary passage (4e) is provided with an electric valve (E
V), the auxiliary passage side of the removal heat exchanger (43) and the auxiliary passage side of the auxiliary heat exchanger (12) are connected in order, and one end is provided with a four-way switching valve in the secondary circuit (30). The other end is connected to the liquid line between (32) and the outdoor electric valve (EV), and the other end is a four-way switching valve (32) in the secondary circuit (30) and the indoor electric valve (EV). Is connected to the liquid line.

A bypass path (2b) is connected to the primary side of the auxiliary heat exchanger (12), and one end of the bypass path (2b) is connected to the primary circuit (20) via an electric valve (EV). ) Is connected between the main heat exchanger (11) and the motor-operated valve (EV), and the other end is connected to the suction side of the compressor (21) in the primary circuit (20). And the auxiliary heat exchanger (12)
The secondary-side refrigerant and the secondary-side refrigerant are configured to exchange heat. Other configurations are the same as in the fourth embodiment.

-Operating operation- Next, a description will be given of a heating operation utilizing heat storage in the regenerative air conditioner (10).
In the case where the heating operation is performed using the heat stored in 1), as shown in FIG. 14, the primary circuit (20) switches the four-way switching valve (22) to the solid line side, Close the electrically operated valve (EV) in the passage (2a). In this state,
The primary refrigerant discharged from the compressor (21) is supplied to the main heat exchanger (1).
Condensed in 1), expanded by the electric valve (EV) in the bypass passage (2b), evaporated in the auxiliary heat exchanger (12) and returned to the compressor (21).

The secondary circuit (30) switches the four-way switching valve (32) to the solid line side and closes the electric valve (EV) of the heat storage passage (4a) while the transfer means (31) and the circulating pump Drive (44). By driving the circulation pump (44), the heat storage medium circulates between the heat storage tank (41) and the removal heat exchanger (43). On the other hand, the secondary refrigerant in the liquid phase discharged from the transfer means (31) flows through the auxiliary passage (4e) and also flows into the main heat exchanger (11). The secondary-side refrigerant flowing through the auxiliary passage (4e) exchanges heat with the heat storage medium in the removal heat exchanger (43) to evaporate, and then flows into the auxiliary heat exchanger (12) to evaporate. In (12), heat exchange is performed with the primary-side refrigerant to condense, and the flow returns to the conveying means (31).

The secondary refrigerant flowing into the main heat exchanger (11) exchanges heat with the primary refrigerant and evaporates, and then flows into the indoor heat exchanger (33) to exchange heat with the indoor heat exchanger (33). The circulation is performed by condensing in the vessel (33) and returning to the conveying means (31). That is, the above 2
The secondary refrigerant transfers the heat of the heat storage medium to the indoor heat exchanger (33) via the primary refrigerant to heat the room. Other cold storage operation is the same as that of the fourth embodiment, and the secondary refrigerant circulates through the heat storage heat exchanger (42) during the heat storage cooling operation.

-Effects of Embodiment- As described above, according to the seventh embodiment, since the auxiliary passage (4e) for taking out heat is provided, heat is stored using the primary circuit (20). Since the heating operation using the heat storage can be performed by reliably using the heat stored in the tank (41), it is necessary to provide the auxiliary circuit (50) including the compressor (51) as in the fifth embodiment. In addition, the circuit configuration can be simplified. Other effects are the same as those of the fourth embodiment.

[0182]

Eighth Embodiment As shown in FIG. 15, this embodiment is different from the first to seventh embodiments in that the heat storage circuit (4
No. 0) is a dynamic type in which the heat storage heat exchanger (42) is arranged outside the heat storage tank (41), and is provided with a preheat heat exchanger (45) during the cold storage operation.

First, similarly to the first embodiment, the primary circuit (20) includes a compressor (21), a four-way switching valve (22), a heat source side heat exchanger (23), and an electric valve (EV). The main heat exchanger (11) is provided with a main passage (2a) which is connected in order, but the liquid line between the heat source side heat exchanger (23) and the main heat exchanger (11) is unidirectional. The valve (CV), the receiver (24), the on-off valve (SV), the motor-operated valve (EV), and the one-way valve (CV) are connected in this order. It is configured to allow only the flow from to the main heat exchanger (11).

In the main passage (2a) of the primary circuit (20), a first passage (2c) and a second passage (2C) having a one-way valve (CV) and allowing only one-way flow are provided. 2d) and the bypass path (2b) is connected. The first passage (2c) has one end between the one-way valve (CV) and the main heat exchanger (11), and the other end with the one-way valve (CV) and the receiver (24).
Between the main heat exchanger (11) and the receiver (24). The second passage (2d) has one end connected between the electric valve (EV) and the one-way valve (CV) and the other end connected between the heat source side heat exchanger (23) and the one-way valve (CV). Then, only the flow from the receiver (24) to the heat source side heat exchanger (23) is allowed.

The bypass path (2b) is connected in order with the electric valve (EV), the primary side of the auxiliary heat exchanger (12), the on-off valve (SV), and the one-way valve (CV). The other end is connected between the receiver (24) and the on-off valve (SV), and the other end is connected between the one-way valve (CV) and the motor-operated valve (EV). From the receiver (24) to the main heat exchanger (11) It is configured to allow only outbound distribution.

On the other hand, the heat storage circuit (40), which is one of the features of the present invention, includes a heat storage tank (41), and the circulation path (4b) is connected to the heat storage tank (41). The circulation passage (4b)
The circulation pump (44), the heat storage side of the preheating heat exchanger (45), and the heat storage side of the heat storage heat exchanger (42) are connected in order so that the heat storage medium circulates.

A heat storage passage (4a) is connected to the secondary side of the heat storage heat exchanger (42), while an auxiliary passage (4e) is connected to the secondary side of the preheat heat exchanger (45). ing. One end of the heat storage passage (4a) is connected to a gas line between the main heat exchanger (11) and the indoor heat exchanger (33) in the secondary circuit (30), and the other end is connected to an electric valve (EV). ) Through the secondary circuit (30)
Is connected to the liquid line between the four-way switching valve (32) and the electric valve (EV) on the indoor side. An outlet passage (4c) is connected between the heat storage heat exchanger (42) in the heat storage passage (4a) and the electric valve (EV), and the outlet passage (4c)
Is connected to a liquid line between the outdoor electric valve (EV) and the four-way switching valve (32) in the secondary circuit (30) via the electric valve (EV).

The auxiliary passage (4e) is configured such that the electric valve (EV), the secondary side of the preheating heat exchanger (45) and the secondary side of the auxiliary heat exchanger (12) are connected in order. . The auxiliary passage (4
e) has one end connected to the liquid line between the outdoor electric valve (EV) and the four-way switching valve (32) in the secondary circuit (30), and the other end connected to the secondary circuit (30). ) Four-way selector valve (3
The auxiliary heat exchanger (12) is connected to a liquid line between 2) and an electric valve (EV) on the indoor side, and is configured so that the primary refrigerant and the secondary refrigerant exchange heat with each other. Other configurations are the same as in the first embodiment.

-Operation- Next, the operation of the regenerative air conditioner (10) will be described.

<Pull-down operation> As shown in FIG.
When cooling the heat storage medium rapidly, the primary circuit (20)
The four-way switching valve (22) is switched to the solid line side, and the primary refrigerant discharged from the compressor (21) is condensed in the heat source side heat exchanger (23), expanded by the electric valve (EV), and exchanges main heat. Circulation is performed by the evaporator (11) and returned to the compressor (21).

The secondary circuit (30) switches the four-way switching valve (32) to the broken line side, and drives the electric valve (EV) on the indoor side, the electric valve (EV) in the auxiliary passage (4e), and the extraction passage (4c). In the state where the electric valve (EV) is closed, the transport means (31) and the circulation pump (44) are driven. By driving the circulation pump (44), the heat storage medium circulates between the heat storage tank (41) and the heat storage heat exchanger (42). On the other hand, the liquid-phase secondary refrigerant discharged from the transport means (31) flows through the heat storage passage (4a) and evaporates in the heat storage heat exchanger (42). The circulation is performed by flowing to the exchanger (11), condensing by the latent heat of vaporization of the primary refrigerant, and returning to the conveying means (31). That is, the secondary-side refrigerant rapidly cools the heat storage medium in the heat storage tank (41) in the heat storage heat exchanger (42). During this pull-down operation, the preheat heat exchanger (45) is not used.

<Cold heat storage operation> As shown in FIG. 17, in the case of the cold heat storage operation performed after the pull-down operation, an operation of preheating the heat storage medium by the preheat heat exchanger (45) is added. First, the primary side circuit (20) switches the four-way switching valve (22) to the solid line side, closes the on-off valve (SV) of the main passage (2a), and outputs the primary discharge from the compressor (21). The side refrigerant is condensed in the heat source side heat exchanger (23), passes through the bypass path (2b), and is supercooled in the auxiliary heat exchanger (12) in a liquid phase. Thereafter, the liquid-phase primary-side refrigerant returns to the main passage (2a), and the electric valve (E
V), evaporates in the main heat exchanger (11) and evaporates in the compressor (2
Perform the circulation returning to 1).

The secondary circuit (30) switches the four-way switching valve (32) to the broken line side and closes the electric valve (EV) on the indoor side and the electric valve (EV) in the take-out passage (4c). Then, the transport means (31) and the circulation pump (44) are driven. By driving the circulation pump (44), the heat storage medium circulates between the heat storage tank (41) and the heat storage heat exchanger (42). On the other hand, the liquid-phase secondary refrigerant discharged from the transfer means (31) is supplied to the heat storage passage (4).
a) and the auxiliary passage (4e), the secondary refrigerant flowing through the heat storage passage (4a) evaporates in the heat storage heat exchanger (42),
Thereafter, the secondary refrigerant flows into the main heat exchanger (11), condenses with the latent heat of evaporation of the primary refrigerant, and circulates back to the conveying means (31).

The secondary refrigerant flowing through the auxiliary passage (4e) exchanges heat with the high-temperature primary refrigerant in the auxiliary heat exchanger (12). At the same time, the secondary refrigerant flows into the preheating heat exchanger (45), exchanges heat with the heat storage medium in the preheating heat exchanger (45), and preheats the heat storage medium in a liquid state. The circulation returning to the conveying means (31) is performed. That is, the secondary-side refrigerant cools the heat storage medium in the heat storage tank (41) by the heat storage heat exchanger (42), generates ice, and stores cold heat in the heat storage tank (41).

<Cooling Operation Utilizing Heat Storage> As shown in FIG. 18, when the cooling operation is performed using the stored cold heat, the primary circuit (20) is stopped.

The secondary circuit (30) switches the four-way switching valve (32) to the broken line side, and drives the outdoor electric valve (EV), the electric valve (EV) in the auxiliary passage (4e), and the heat storage passage (4a). ) Motorized valve (E
With V) closed, the transport means (31) and the circulation pump (44) are driven. By driving the circulation pump (44), the heat storage medium circulates between the heat storage tank (41) and the heat storage heat exchanger (42). On the other hand, the liquid-phase secondary refrigerant discharged from the transport means (31) flows into the indoor heat exchanger (33) and evaporates in the indoor heat exchanger (33). After flowing through the heat storage passage (4a), the heat is condensed by the heat of the heat storage medium in the heat storage heat exchanger (42), and is conveyed through the take-out passage (4c).
Return to the circulation. That is, the secondary-side refrigerant conveys the cold heat of the heat storage medium to the indoor heat exchanger (33) to cool the room.

<Normal Cooling Operation> As shown in FIG.
When performing normal cooling operation using the secondary refrigerant as a heat source, the primary circuit (20) switches the four-way switching valve (22) to the solid line side, and the primary refrigerant discharged from the compressor (21) is used as the heat source. Condensed in the side heat exchanger (23), expanded by the electric valve (EV), evaporated in the main heat exchanger (11) and returned to the compressor (21).

The secondary side circuit (30) switches the four-way switching valve (32) to the broken line side, and the motor-operated valve (EV) of the heat storage passage (4a), the motor-operated valve (EV) of the take-out passage (4c) and the auxiliary valve. The transport means (31) is driven with the electric valve (EV) in the passage (4e) closed. The liquid-phase secondary-side refrigerant discharged from the transfer means (31) flows into the indoor heat exchanger (33), and flows into the indoor heat exchanger (33).
After that, the secondary-side refrigerant flows into the main heat exchanger (11), is condensed by the latent heat of vaporization of the primary-side refrigerant, and is conveyed by the conveying means (31).
Return to the circulation. That is, the secondary-side refrigerant conveys cold heat, which is latent heat of evaporation of the primary-side refrigerant, to the indoor heat exchanger (33) to cool the room.

<Combined Cooling Operation Using Heat Storage> As shown in FIG. 20, when normal cooling operation is performed at the same time as using stored cold heat, the state shown in FIG. 18 and FIG. In (20), the four-way switching valve (22) is switched to the solid line side, and the primary refrigerant discharged from the compressor (21) is condensed in the heat source side heat exchanger (23) and expanded by the electric valve (EV). Then, circulation is performed by returning to the compressor (21) after evaporating in the main heat exchanger (11).

The secondary circuit (30) switches the four-way switching valve (32) to the broken line side and closes the motor-operated valve (EV) in the auxiliary passage (4e) and the motor-operated valve (EV) in the heat storage passage (4a). In this state, the transport means (31) and the circulation pump (44) are driven. By driving the circulation pump (44), the heat storage medium circulates between the heat storage tank (41) and the heat storage heat exchanger (42). On the other hand, the liquid-phase secondary refrigerant discharged from the transport means (31) flows into the indoor heat exchanger (33) and evaporates in the indoor heat exchanger (33). Heat storage passage (4a) and main heat exchanger (11)
The secondary-side refrigerant flowing through the heat storage passage (4a) is condensed by the heat of the heat storage medium in the heat storage heat exchanger (42), and returns to the transfer means (31) via the extraction passage (4c). Perform circulation.
The secondary refrigerant flowing into the main heat exchanger (11) is condensed by the latent heat of evaporation of the primary refrigerant in the main heat exchanger (11) and circulates back to the conveying means (31). That is, the secondary-side refrigerant conveys the cold heat of the heat storage medium and the cold heat as the latent heat of evaporation of the primary-side refrigerant to the indoor heat exchanger (33) to cool the room.

<Heat Heat Storage Operation> As shown in FIG. 21, when heat is stored, the primary circuit (20) includes a four-way switching valve (2
2) was switched to the broken line side, and 1 was discharged from the compressor (21).
The secondary refrigerant condenses in the main heat exchanger (11), expands in the electric valve (EV), evaporates in the heat source heat exchanger (23), and evaporates in the compressor (21).
Return to the circulation.

The secondary circuit (30) switches the four-way switching valve (32) to the solid line side, and drives the indoor side electric valve (EV), the electric valve (EV) in the take-out passage (4c) and the auxiliary passage (4e). ) Motorized valve (E
With V) closed, the transport means (31) and the circulation pump (44) are driven. By driving the circulation pump (44), the heat storage medium circulates between the heat storage tank (41) and the heat storage heat exchanger (42). On the other hand, the liquid-phase secondary refrigerant discharged from the conveying means (31) flows to the main heat exchanger (11) and evaporates by the latent heat of condensation of the primary refrigerant. The heat is transferred to the heat exchanger for heat transfer (42), condensed in the heat exchanger for heat storage (42), and returned to the conveying means (31). That is, the secondary-side refrigerant heats the heat storage medium in the heat storage tank (41) in the heat storage heat exchanger (42) to store heat such as hot water.

<Heating Operation Using Heat Storage> As shown in FIG. 22, when the heating operation is performed using the stored heat, the primary circuit (20) is stopped.

The secondary circuit (30) switches the four-way switching valve (32) to the solid line side, and drives the outdoor electric valve (EV), the electric valve (EV) in the auxiliary passage (4e), and the heat storage passage (4a). ) Motorized valve (E
With V) closed, the transport means (31) and the circulation pump (44) are driven. By driving the circulation pump (44), the heat storage medium circulates between the heat storage tank (41) and the heat storage heat exchanger (42). On the other hand, the secondary refrigerant in the liquid phase discharged from the transfer means (31) flows through the removal passage (4c) to the heat storage heat exchanger (42), evaporates with the heat of the heat storage medium, and then evaporates.
The secondary refrigerant flows into the indoor heat exchanger (33), condenses in the indoor heat exchanger (33), and circulates back to the transport means (31). That is, the secondary-side refrigerant conveys the heat of the heat storage medium to the indoor heat exchanger (33) to heat the room.

<Normal Heating Operation> As shown in FIG.
When performing a normal heating operation using the secondary refrigerant as a heat source, the primary circuit (20) switches the four-way switching valve (22) to the broken line side, and the primary refrigerant discharged from the compressor (21) is mainly used. After being condensed in the heat exchanger (11) and passing through the first passage (2c) and expanded by the electric valve (EV) in the main passage (2a), it passes through the second passage (2d) and passes through the heat source side heat exchanger ( A circulation that evaporates in 23) and returns to the compressor (21) is performed.

The secondary circuit (30) switches the four-way switching valve (32) to the solid line side, and controls the electric valve (EV) of the heat storage passage (4a), the electric valve (EV) of the extraction passage (4c), and the auxiliary valve. The transport means (31) is driven with the electric valve (EV) in the passage (4e) closed. The liquid-phase secondary refrigerant discharged from the transfer means (31) flows to the main heat exchanger (11), evaporates by the latent heat of condensation of the primary refrigerant, and then flows to the indoor heat exchanger (33). Then, the refrigerant is condensed in the indoor heat exchanger (33) and returned to the conveying means (31). That is, the secondary-side refrigerant conveys heat, which is latent heat of condensation of the primary-side refrigerant, to the indoor heat exchanger (33) to heat the room.

<Combined Heating Operation Using Heat Storage> As shown in FIG. 24, when normal heating operation is performed at the same time as using the stored heat, the state shown in FIG. 22 and FIG. In (20), the four-way switching valve (22) is switched to the broken line side, and the primary refrigerant discharged from the compressor (21) condenses in the main heat exchanger (11) and expands in the electric valve (EV). Then, circulation is performed in the heat source side heat exchanger (23), which evaporates and returns to the compressor (21).

The secondary circuit (30) switches the four-way switching valve (32) to the solid line side and closes the electric valve (EV) in the heat storage passage (4a) and the electric valve (EV) in the auxiliary passage (4e). In this state, the transport means (31) and the circulation pump (44) are driven. By driving the circulation pump (44), the heat storage medium circulates between the heat storage tank (41) and the heat storage heat exchanger (42). On the other hand, the secondary refrigerant in the liquid phase discharged from the transfer means (31) flows separately into the discharge passage (4c) and the main heat exchanger (11), and flows into the main heat exchanger (11). The secondary refrigerant evaporates by the latent heat of condensation of the primary refrigerant. Further, the secondary-side refrigerant flowing in the extraction passage (4c) flows through the heat storage heat exchanger (42) and evaporates with the heat of the heat storage medium. Thereafter, the secondary-side refrigerant merges and flows into the indoor heat exchanger (33), and is condensed in the indoor heat exchanger (33) and circulates back to the conveying means (31). That is, the secondary-side refrigerant conveys the heat of the heat storage medium and the heat, which is the latent heat of condensation of the primary-side refrigerant, to the indoor heat exchanger (33) to heat the room.

-Effects of Embodiment- As described above, according to the eighth embodiment, the heat storage circuit (40)
Is configured as a dynamic type, a system combining various heat source capacities and heat storage capacities can also be constructed in the dynamic type heat storage circuit, and the degree of freedom of combination can be improved. Other effects are the same as those of the first embodiment.

-Variation- In this embodiment, the primary refrigerant and the secondary refrigerant may be the same refrigerant or different refrigerants as in the first embodiment. In particular, the secondary refrigerant may be a low-pressure refrigerant or a low-pressure refrigerant. For example, R134a
Can be used to perform high-temperature heat storage.

[0211]

Ninth Embodiment In this embodiment, as shown in FIG. 25, the heat storage circuit (40) is of a dynamic type and has a preheat heat exchanger (45) as in the eighth embodiment. Four-way switching valve (46) between passage (4e) and heat storage passage (4a)
Is provided.

That is, in the auxiliary passage (4e), the space between the preheat heat exchanger (45) and the auxiliary heat exchanger (12) is connected to two ports of the four-way switching valve (46). The other two ports of the four-way switching valve (46) are connected between the heat storage heat exchanger (42) and the secondary circuit (30) in the heat storage passage (4a).

The bypass path (2) of the primary side circuit (20)
A heating passage having an on-off valve (SV) is connected to b), and one end of the heating passage is connected between the auxiliary heat exchanger (12) and the on-off valve (SV) in the bypass passage (2b). On the other hand, the other end is connected to the suction side of the compressor (21). Other configurations are the same as in the eighth embodiment.

-Operating operation- Next, a description will be given of a heating operation utilizing heat storage in the regenerative air conditioner (10).
In the case where the heating operation is performed using the heat stored in 1), as shown in FIG. 25, first, the primary side circuit (20)
Switches the four-way switching valve (22) to the broken line side and closes the on-off valve (SV) of the main passage (2a). In this state, the primary-side refrigerant discharged from the compressor (21) is condensed in the heat-source-side heat exchanger (23) and passes through the first passage (2c).
It expands with the electric valve (EV) through the bypass (2b). After that, the primary-side refrigerant evaporates in the auxiliary heat exchanger (12) and then returns to the compressor (21).

The secondary circuit (30) switches the four-way switching valve (32) to the solid line side and closes the electric valve (EV) in the heat storage passage (4a) and the electric valve (EV) in the auxiliary passage (4e). In this state, the transport means (31) and the circulation pump (44) are driven, and the four-way switching valve (46) of the auxiliary passage (4e) is switched to the broken line side. By driving the circulation pump (44), the heat storage medium circulates between the heat storage tank (41) and the heat storage heat exchanger (42).

On the other hand, the liquid-phase secondary refrigerant discharged from the transfer means (31) is supplied to the discharge passage (4c) and the main heat exchanger (1).
The secondary refrigerant flowing through the outlet passage (4c) flows through the heat storage passage (4a) and flows through the heat storage passage (4a).
After evaporating with the heat of the heat storage medium in 2), the four-way switching valve (46)
Through the auxiliary passage (4e), exchanges heat with the primary refrigerant in the auxiliary heat exchanger (12), condenses with the latent heat of evaporation of the primary refrigerant, and returns to the conveying means (31). .

Further, the secondary refrigerant flowing to the main heat exchanger (11) exchanges heat with the primary refrigerant in the main heat exchanger (11), and the latent heat of condensation of the primary refrigerant. It evaporates and flows to the indoor heat exchanger (33), where it condenses in the indoor heat exchanger (33) and returns to the transport means (31). That is, the secondary refrigerant transfers the heat of the heat storage medium to the indoor heat exchanger (33) via the primary refrigerant to heat the room.

Other operations such as cold storage operation are the same as those in the eighth embodiment. At this time, the four-way switching valve (46) of the auxiliary passage (4e) is used.
Are switched to the solid line side in FIG. Further, the combined heating operation of performing the normal heating operation at the same time as utilizing the stored heat as in the eighth embodiment is not performed.

-Effects of Embodiment- As described above, according to the ninth embodiment, the auxiliary heat exchanger (12) is switched to the preheat heat exchanger (45) and the heat storage heat exchanger (42). As a result, the heating operation utilizing the heat storage can be performed by reliably using the heat stored in the heat storage tank (41) without using a low-pressure refrigerant or the like as the secondary-side refrigerant. Other effects are the same as in the eighth embodiment.

[0220]

[Embodiment 10] In this embodiment, as shown in FIG. 26, the heat storage circuit (40) is a dynamic type and has a preheating heat exchanger (45) as in the eighth embodiment. An independent auxiliary circuit (50) is provided.

In the auxiliary circuit (50), the compressor (51), the auxiliary circuit side of the preheating heat exchanger (45), the electric valve (EV), and the auxiliary circuit side of the heat storage auxiliary heat exchanger (47) are connected in order. The auxiliary refrigerant of the auxiliary circuit (50) is condensed in the preheat heat exchanger (45) and evaporated in the heat storage auxiliary heat exchanger (47).

A circulation passage (4b) is connected to the heat storage side of the preheat heat exchanger (45), while the heat storage auxiliary heat exchanger (4
The use path (4d) is connected to the secondary side of 7). One end of the use passage (4d) is connected to a liquid line between the four-way switching valve (32) in the secondary circuit (30) and the outdoor electric valve (EV) via the electric valve (EV). The other end is connected to the indoor heat exchanger (33) and the main heat exchanger (1) in the secondary circuit (30).
1) is connected to the gas line between. The heat exchanger for heat dissipation is configured to exchange heat between the secondary refrigerant and the auxiliary refrigerant.

The primary circuit (20) comprises a compressor (21), a four-way switching valve (22), a heat source side heat exchanger (23), an electric valve (EV), and a main circuit, as in the first embodiment. The heat exchanger (11) is connected in order. Other configurations are the same as in the eighth embodiment.

-Operating operation- Next, the operating operation of the regenerative air conditioner (10) will be described. However, since the cold storage operation is different from that of the eighth embodiment, the other heat storage cooling operation is the same. Only the operation for performing cold storage will be described. In the cooling operation using heat storage, the electric valve (EV) in the use passage (4d) is closed.

As shown in FIG. 26, in the case of the cold storage operation performed after the pull-down operation, the primary circuit (20) switches the four-way switching valve (22) to the solid line side and discharges from the compressor (21). The primary-side refrigerant condenses in the heat-source-side heat exchanger (23), expands in the electric valve (EV), evaporates in the main heat exchanger (11), and returns to the compressor (21).

The secondary side circuit (30) switches the four-way switching valve (32) to the broken line side and closes the electric valve (EV) on the indoor side and the electric valve (EV) on the take-out passage (4c). And the auxiliary circuit (50) while driving the transport means (31) and the circulation pump (44). By driving the circulation pump (44), the heat storage medium circulates between the heat storage tank (41), the preheating heat exchanger (45), and the heat storage heat exchanger (42), while the auxiliary circuit (50).
The auxiliary refrigerant is discharged from the compressor (51), condensed in the preheating heat exchanger (45), depressurized by the electric valve (EV), evaporated in the heat storage auxiliary heat exchanger (47), and evaporated in the compressor (51). Circulate back to).
The preheating heat exchanger (45) preheats the heat storage medium flowing through the heat storage heat exchanger (42).

On the other hand, the liquid-phase secondary refrigerant discharged from the transport means (31) flows through the heat storage passage (4a) and evaporates in the heat storage heat exchanger (42). , The main heat exchanger (11) and the use passage (4d)
The secondary refrigerant flowing in 1) is condensed by the latent heat of vaporization of the primary refrigerant and circulates back to the conveying means (31).

The secondary refrigerant flowing through the utilization passage (4d) exchanges heat with the auxiliary refrigerant in the auxiliary heat storage heat exchanger (47), and is condensed by the latent heat of evaporation of the auxiliary refrigerant to convey the refrigerant (31). Circulate back to). That is, the secondary refrigerant is
The heat storage medium in the heat storage tank (41) is cooled by the heat storage heat exchanger (42) to generate ice and store cold heat in the heat storage tank (41).

-Effects of Embodiment- As described above, according to the tenth embodiment, since the auxiliary circuit (50) for preheating the heat storage medium is provided, cold heat storage such as ice is reliably performed. be able to. Other effects are the same as in the eighth embodiment.

[0230]

Eleventh Embodiment In this embodiment, as shown in FIG. 27, the auxiliary circuit (50) of the tenth embodiment is configured so that the refrigerant circulation direction is reversible.

That is, the auxiliary circuit (50) includes a compressor (51), a four-way switching valve (54), a preheating heat exchanger (45), an electric valve (EV), and a heat storage auxiliary heat exchanger (47). Are sequentially connected. And the above-mentioned heat storage auxiliary heat exchanger (47)
Is configured to perform the heat absorption of the auxiliary refrigerant during the cold storage operation and the extraction of the warm heat during the heating operation using the heat storage.

-Operating operation- Next, the operating operation of the regenerative air conditioner (10) will be described. Unlike the tenth embodiment, which is different from the heat storage heating operation described in the eighth embodiment, other heat storage air conditioners are used. Since the cooling operation and the like are the same, only the heating operation using heat storage will be described. In the cooling operation using heat storage, the electric valve (EV) in the use passage (4d) is closed.

As shown in FIG. 27, the primary circuit (20) is stopped, while the secondary circuit (30) is connected to the four-way switching valve (32).
To the broken line side, and with the electric valve (EV) on the outdoor side, the electric valve (EV) in the heat storage passage (4a), and the electric valve (EV) in the extraction passage (4c) closed, The circulation pump (44) is driven and the auxiliary circuit (50) is operated. By driving the circulation pump (44), the heat storage medium circulates between the heat storage tank (41), the preheating heat exchanger (45), and the heat storage heat exchanger (42), while the auxiliary refrigerant in the auxiliary circuit (50). Is discharged from the compressor (51), condensed in the auxiliary heat storage heat exchanger (47), depressurized by the electric valve (EV), exchanges heat with the heat storage medium in the preheat heat exchanger (45), A circulation that evaporates due to the heat and returns to the compressor (51) is performed.

On the other hand, the liquid-phase secondary refrigerant discharged from the conveying means (31) flows through the use passage (4d) and exchanges heat with the auxiliary refrigerant in the auxiliary heat storage heat exchanger (47). Then, the secondary refrigerant flows through the indoor heat exchanger (33) to heat the indoor air, condenses, and circulates back to the conveying means (31). That is, the secondary-side refrigerant conveys the heat of the heat storage medium to the indoor heat exchanger (33) via the auxiliary refrigerant to heat the room.

-Effects of Embodiment- As described above, according to the eleventh embodiment, since the heat of the heat storage medium is extracted by using the preheating heat exchanger (45), the circuit configuration is simplified. Can be planned. Other effects are the same as in the eighth embodiment.

[0236]

Embodiment 12 In this embodiment, as shown in FIG. 28, the heat storage circuit (40) is a dynamic type as in Embodiment 8, but does not include a preheating heat exchanger (45). It is. Therefore, the circulation circuit of the heat storage circuit (40)
While the circulation pump (44) and the heat storage heat exchanger (42) are connected and configured, the auxiliary passage (4e) and the auxiliary heat exchanger (12) of the eighth embodiment are not provided. The primary circuit (20) includes a compressor (21), a four-way switching valve (22), a heat source side heat exchanger (23), an electric valve (EV), and a main heat exchanger as in the first embodiment. And (11) are connected in order. Other configurations are the same as in the eighth embodiment.

-Operation- Next, the operation of the regenerative air conditioner (10) is different from that of the eighth embodiment in that the preheat heat exchanger (45) is not used during the cold storage operation of the eighth embodiment. Is only different
The other cooling operation using heat storage is the same. That is, in the present embodiment, the pull-down operation and the cold storage operation of the eighth embodiment are in the same operation state. The primary circuit (20) is shown in FIG.
It only switches between the forward cycle of the solid arrow of FIG. 8 and the reverse cycle of the chain arrow in FIG.

-Effects of Embodiment- As described above, according to the twelfth embodiment, since the preheating heat exchanger (45) is omitted, the circuit configuration can be further simplified. Other effects are the same as in the eighth embodiment.

[0239]

Embodiment 13 In this embodiment, as shown in FIG. 29, the heat storage circuit (40) is of a dynamic type and is not provided with a preheat heat exchanger (45) as in Embodiment 12. And an auxiliary circuit (50) for taking out heat.

That is, in the present embodiment, the preheating heat exchanger (4) of the auxiliary circuit (50) in the eleventh embodiment (see FIG. 27) is used.
5) and an auxiliary heat source heat exchanger (53) and an auxiliary use heat exchanger (52) for extracting heat from the heat storage auxiliary heat exchanger (47)
The auxiliary circuit (50) is provided with a compressor (5
The auxiliary refrigerant discharged from 1) is condensed in the auxiliary heat exchanger (52), evaporated and circulated in the auxiliary heat source heat exchanger (53) to perform only the normal cycle operation.

-Operating operation- Next, the operating operation of the regenerative air conditioner (10) is the same as that of the twelfth embodiment except that the heating operation using heat storage is different, and the other cooling operation using heat storage is the same. . In addition, the heat storage utilizing heating operation is performed in the same manner as in Embodiment 11,
The auxiliary refrigerant of the auxiliary circuit (50) is discharged from the compressor (51), condensed in the auxiliary use heat exchanger (52), passes through the electric valve (EV), and is stored in the auxiliary heat source heat exchanger (53). Circulates back to the compressor (51) after being evaporated by the heat of. On the other hand, the secondary refrigerant in the liquid phase discharged from the transfer means (31) flows through the use passage (4d), evaporates in the auxiliary use heat exchanger (52) due to the latent heat of condensation of the auxiliary refrigerant, and flows into the indoor heat exchanger. In (33), the room air is heated, condensed, and circulated back to the conveying means (31). That is, the secondary-side refrigerant conveys the heat of the heat storage medium to the indoor heat exchanger (33) via the auxiliary refrigerant to heat the room.

-Effects of Embodiment- As described above, according to the thirteenth embodiment, the auxiliary circuit (5
Since the heat of the heat storage medium is extracted by 0), the heating operation using the heat storage can be reliably performed. Other effects are the same as in the eighth embodiment.

[0243]

[Embodiment 14] In this embodiment, as shown in FIG. 30, the heat storage circuit (40) is of a dynamic type and is not provided with a preheat heat exchanger (45) as in Embodiment 12. And an auxiliary passage (4e) for taking out heat.

That is, the present embodiment corresponds to the ninth embodiment (FIG.
5), the preheat heat exchanger (45) and the auxiliary heat exchanger (47) are the auxiliary heat exchanger (47) and the auxiliary heat exchanger (1).
In the second embodiment, the four-way switching valve (22) of the auxiliary passage (4e) of the ninth embodiment is not provided.

-Operating operation- Next, the operating operation of the regenerative air conditioner (10) is the same as that of the twelfth embodiment except that the heating operation using heat storage is different, and the other cooling operation using heat storage is the same. . In addition, as shown in FIG.
The secondary circuit (20) switches the four-way switching valve (22) to the broken line side and closes the on-off valve (SV) of the main passage (2a). In this state, the 1 discharged from the compressor (21)
The secondary refrigerant is condensed in the heat source side heat exchanger (23), passes through the first passage (2c), passes through the bypass passage (2b), and is electrically operated (EV).
To inflate. Thereafter, the primary refrigerant is supplied to the auxiliary heat exchanger (1).
After evaporating in 2), the compressor (21) passes through a heating passage.
Return to the circulation.

The secondary circuit (30) switches the four-way switching valve (32) to the solid line side, and closes the motor-operated valve (EV) in the heat storage passage (4a) and the motor-operated valve (EV) in the extraction passage (4c). In this state, the transport means (31) and the circulation pump (44) are driven. By driving the circulation pump (44), the heat storage medium circulates between the heat storage tank (41) and the heat storage heat exchanger (42).

On the other hand, the liquid-phase secondary refrigerant discharged from the transfer means (31) is supplied to the auxiliary passage (4e) and the main heat exchanger (11).
The secondary refrigerant flowing through the auxiliary passage (4e) evaporates with the heat of the heat storage medium in the auxiliary heat storage heat exchanger (47), and then evaporates in the auxiliary heat exchanger (12). Then, the heat is condensed by the latent heat of evaporation of the primary refrigerant and returned to the conveying means (31).

The secondary refrigerant flowing to the main heat exchanger (11) exchanges heat with the primary refrigerant in the main heat exchanger (11), and the latent heat of condensation of the primary refrigerant. It evaporates and flows to the indoor heat exchanger (33), where it condenses in the indoor heat exchanger (33) and returns to the transport means (31). That is, the secondary refrigerant transfers the heat of the heat storage medium to the indoor heat exchanger (33) via the primary refrigerant to heat the room.

-Effects of Embodiment- As described above, according to the fourteenth embodiment, since heat is extracted by the auxiliary heat storage heat exchanger (47) and the auxiliary heat exchanger (12), the secondary side The heating operation using the heat storage can be performed by reliably using the heat stored in the heat storage tank (41) without using a low-pressure refrigerant or the like as the refrigerant. Other effects are the same as in the eighth embodiment.

[0250]

Embodiment 15 In this embodiment, as shown in FIG. 31, the heat storage circuit (40) is of a dynamic type and is not provided with a preheat heat exchanger (45) as in Embodiment 12. In the fourteenth embodiment, a take-out heat exchanger (43) is provided.

That is, in the present embodiment, the heat storage heat exchanger (42) dedicated to storing heat for storing cold and hot heat, and the extraction heat exchanger (43) dedicated to taking out the stored cold heat are provided.
Is provided.

Specifically, the circulation passage (4) of the heat storage circuit (40)
b) is configured by connecting the circulation pump (44), the auxiliary heat storage heat exchanger (47), the removal heat exchanger (43), and the heat storage heat exchanger (42) in this order. An auxiliary passage (4e) is connected to the heat storage auxiliary heat exchanger (47), while a heat storage passage (4a) is connected to the heat storage heat exchanger (42) and connected to the extraction heat exchanger (43). Is connected to the take-out passage (4c).

The heat storage passage (4a) includes a motor-operated valve (EV), one end of which has a four-way switching valve (3) in the secondary circuit (30).
2) is connected to the liquid line between the indoor electric valve (EV) and the other end is connected to the indoor heat exchanger (33) and the main heat exchanger (11) in the secondary circuit (30). Connected to the gas line between them. Also, the take-out passage (4c) is provided with a motor-operated valve (E
V), one end of which is connected to the liquid line between the four-way switching valve (32) and the outdoor electric valve (EV) in the secondary circuit (30), and the other end of which is connected to the secondary circuit It is connected to the gas line between the indoor heat exchanger (33) and the main heat exchanger (11) in (30).

-Operation- Next, the operation of the regenerative air conditioner (10) is different from that of the fourteenth embodiment in that the cold storage operation, the hot storage operation and the combined cooling operation using the heat storage are different. Use heating operation etc. are the same. In other words, the secondary refrigerant flows through the heat storage passage (4a) during the cold heat storage operation and the warm heat storage operation, and the secondary refrigerant and the heat storage medium exchange heat with the heat storage heat exchanger (42) to remove ice or hot water. On the other hand, the secondary-side refrigerant flows through the extraction passage (4c) during the cooling operation using heat storage utilizing cold heat and during the cooling operation using heat storage using both cooling and normal cooling, and the heat exchanger for extraction (43) Then, the secondary-side refrigerant and the heat storage medium exchange heat to extract cold heat.

-Effects of Embodiment- As described above, according to the fifteenth embodiment, since the heat exchanger for heat storage (42) and the heat exchanger for removal (43) are provided, it is suitable for heat storage. It is possible to set a heat exchanger and a heat exchanger suitable for taking out heat storage, so that heat storage and the like can be performed efficiently. Other effects can be obtained by using the fourteenth embodiment.
Is the same as

[0256]

Sixteenth Embodiment In this embodiment, as shown in FIG. 32, a plurality of outdoor units (1A), indoor units (1B) and heat storage units (1C) of the first embodiment are provided. That is, the outdoor unit (1A) and the indoor unit (1
The outdoor unit (1A), the indoor unit (1B) and the heat storage unit (1C) are connected in parallel with each other in a multi-type configuration of B) and the heat storage unit (1C).

Accordingly, the operation of the outdoor unit (1A) and the heat storage unit (1C) is the same as that of the first embodiment, but one or all of the heat storage units (1C) are operated in accordance with the heat storage capacity and the like. One or all of the outdoor units (1A) are operated according to the heat source capacity and the like. Also, the outdoor unit (1A) and the heat storage unit (1C) are operated in combination.

As a result, the outdoor unit (1A) and the heat storage unit (1C) in various combinations corresponding to the power demand and the like.
Can be operated.

Note that the outdoor unit (1A) and the heat storage unit (1C) are not limited to the circuit of the first embodiment, but may be the circuits of the second to fifteenth embodiments.

[0260]

Seventeenth Embodiment As shown in FIG. 33, the present embodiment is different from the first embodiment (see FIG. 1) and the fourth embodiment (FIG. 11).
In this case, the outer melting in which the ice in the heat storage tank (41) is melted from the outside and the inner melting in which the ice in the heat storage tank (41) is melted from the inside are used in combination.

Specifically, in the present embodiment, the first extraction passage (4c) corresponding to the extraction passage (4c) in the first embodiment.
c), and a second extraction passage (4f) corresponding to the extraction passage (4c) in the fourth embodiment. The second extraction passage (4f) has a heat storage passage (4
An electromagnetic valve (SV) that allows only the flow from a) to the main passage (3a) is provided instead of the expansion valve (EV) of the fourth embodiment.

In the cooling operation using the heat storage, 2
At the same time as the secondary refrigerant flows through the first extraction passage (4c),
Cold heat is extracted from the heat storage passage (4a) through the second extraction passage (4f). Other configurations are the same as in the first embodiment.

-Operation- Next, the operation of the regenerative air conditioner (10) will be described. However, since the regenerative cooling operation is different from that of the first embodiment, the other regenerative heat storage operation is the same. Only the cooling operation using heat storage will be described.

The heat storage cooling operation has two types of operation modes. The first heat storage cooling operation is similar to that of the first embodiment, and the outer heat and the inner heat of the second embodiment. There is a second heat storage utilizing cooling operation that simultaneously performs the melting type. Since the first cooling operation using heat storage is the same as that of the first embodiment, detailed description is omitted.
In the case of the first cooling operation using heat storage, the heat storage passage (4
The electric valve (EV) of a) and the solenoid valve (SV) of the second extraction passage (4f) are closed.

When the second cooling operation using heat storage is performed,
Primary circuit (20) stops, while secondary circuit (30)
As shown in FIG. 33, when the four-way switching valve (32) is switched to the solid line side and the electric valve (EV) on the outdoor side and the electric valve (EV) in the heat storage passage (4a) are closed, (31) and the circulation pump (44) are driven.

As shown by solid arrows in FIG. 33, the secondary refrigerant in the liquid phase discharged from the transport means (31) flows into the indoor heat exchanger (33) and flows into the indoor heat exchanger (33). To evaporate.
Then, a part of the secondary refrigerant flows through the heat storage passage (4a), is condensed by the heat of the heat storage medium in the heat storage heat exchanger (42), and flows through the second extraction passage (4f). On the other hand, the remainder of the secondary-side refrigerant flows through the first extraction passage (4c) and is condensed by the heat of the heat storage medium in the extraction heat exchanger (43). The secondary-side refrigerant flowing through the second extraction passage (4f) and the secondary-side refrigerant flowing through the first extraction passage (4c) join together, return to the conveying means (31), and perform this circulation. In other words, the secondary refrigerant transfers the cold heat of the heat storage medium to the heat storage heat exchanger (4).
It is taken out from both 2) and the take-out heat exchanger (43) and transported to the indoor heat exchanger (33) to cool the room.

In the second cooling operation using heat storage, when a large amount of ice as a heat storage medium is used, the amount of the secondary refrigerant flowing through the extraction heat exchanger (43) is increased.

When storing cold and warm heat, the secondary refrigerant may be circulated between the main heat exchanger (11) and the heat storage heat exchanger (42), or the main heat exchanger ( The secondary-side refrigerant may be circulated between 11) and the removal heat exchanger (43).

-Effects of the Embodiment- As described above, according to the seventeenth embodiment, during the cooling operation using the heat storage, the outer heat and the inner melt can be used together to extract the cold heat. It can be carried out. As a result, rapid cooling can be performed,
Comfort can be improved. Other effects are the same as those of the first embodiment.

[0270]

Eighteenth Embodiment As shown in FIG. 34, the present embodiment relates to a second embodiment (see FIG. 8) and a fifth embodiment (FIG. 12).
As in the seventeenth embodiment, the outer melting in which the ice in the heat storage tank (41) is melted from the outside and the inner melting in which the ice in the heat storage tank (41) is melted from the inside are used in combination. It was done.

Specifically, in the present embodiment, the first extraction passage (4c) corresponding to the extraction passage (4c) in the second embodiment.
c), and a second extraction passage (4f) corresponding to the extraction passage (4c) in the fifth embodiment. The second extraction passage (4f) has a heat storage passage (4
An electromagnetic valve (SV) that allows only the flow from a) toward the main passage (3a) is provided instead of the expansion valve (EV) of the fifth embodiment.

At the time of cooling operation using heat storage, 2
At the same time as the secondary refrigerant flows through the first extraction passage (4c),
Cold heat is extracted from the heat storage passage (4a) through the second extraction passage (4f). Other configurations are the same as those of the second embodiment.

-Operation- Next, the operation of the regenerative air conditioner (10) will be described.
A first heat storage utilizing cooling operation of the outer melting similar to the above and a second heat storage utilizing cooling operation using both the outer melting and the inner melting types, which are features of the present embodiment, are performed. When performing the first cooling operation using heat storage, the electric valve (EV) in the heat storage passage (4a) is used.
And the solenoid valve (SV) of the second extraction passage (4f) is closed.

The second cooling operation using heat storage is the same as in the seventeenth embodiment. Transport means (31) and circulation pump (4
When 4) is driven, as shown by the solid arrow in FIG.
The secondary refrigerant flows from the conveying means (31) to the indoor heat exchanger (33). Subsequently, the secondary refrigerant is supplied to the heat storage passage (4a) and the first refrigerant.
Flows through the take-out passage (4c), and is condensed by the heat storage medium heat exchanger (42) and the take-out heat exchanger (43) due to the cold heat of the heat storage medium. Then, the secondary side refrigerant joins and conveys (31)
And perform this circulation. That is, the secondary refrigerant is
The heat of the heat storage medium is taken out from both the heat storage heat exchanger (42) and the take-out heat exchanger (43), and is conveyed to the indoor heat exchanger (33) to cool the room.

The operation of the second cooling operation using heat storage is the same as that of the seventeenth embodiment, and the other operation such as the heat storage operation is the same as that of the second embodiment.

-Effects of Embodiment- As described above, according to the eighteenth embodiment, during the cooling operation using the heat storage, the outer heat and the inner melt can be used together to extract the cold heat. It can be carried out. As a result, rapid cooling can be performed,
Comfort can be improved. Other effects are the same as those of the second embodiment.

Modification of Embodiment 18 In the above embodiment, the auxiliary heat source heat exchanger (53) is arranged outside the heat storage tank (41). However, as in Embodiment 6, the heat storage tank (41) May be arranged inside.

[0278]

Nineteenth Embodiment As shown in FIG. 35, the present embodiment differs from the third embodiment (see FIG. 9) and the seventh embodiment (FIG. 14).
As in the seventeenth embodiment, the outer melting in which the ice in the heat storage tank (41) is melted from the outside and the inner melting in which the ice in the heat storage tank (41) is melted from the inside are used in combination. It was done.

Specifically, in the present embodiment, the first extraction passage (4c) corresponding to the extraction passage (4c) in the third embodiment is used.
c), and a second extraction passage (4f) corresponding to the extraction passage (4c) in the seventh embodiment. The second extraction passage (4f) has a heat storage passage (4
An electromagnetic valve (SV) that allows only the flow from a) to the main passage (3a) is provided instead of the expansion valve (EV) of the seventh embodiment.

At the time of cooling operation using heat storage, 2
At the same time as the secondary refrigerant flows through the first extraction passage (4c),
Cold heat is extracted from the heat storage passage (4a) through the second extraction passage (4f). Other configurations are the same as those of the second embodiment.

-Operation- Next, the operation of the regenerative air conditioner (10) will be described.
A first heat storage utilizing cooling operation of the outer melting similar to the above and a second heat storage utilizing cooling operation using both the outer melting and the inner melting types, which are features of the present embodiment, are performed. When performing the first cooling operation using heat storage, the electric valve (EV) in the heat storage passage (4a) is used.
And the solenoid valve (SV) of the second extraction passage (4f) is closed.

The second cooling operation using heat storage is the same as in the seventeenth embodiment. Transport means (31) and circulation pump (4
When 4) is driven, as shown by the solid arrow in FIG.
The secondary refrigerant flows from the conveying means (31) to the indoor heat exchanger (33). Subsequently, the secondary refrigerant is supplied to the heat storage passage (4a) and the first refrigerant.
Flows through the take-out passage (4c), and is condensed by the heat storage medium heat exchanger (42) and the take-out heat exchanger (43) due to the cold heat of the heat storage medium. Then, the secondary side refrigerant joins and conveys (31)
And perform this circulation. That is, the secondary refrigerant is
The heat of the heat storage medium is taken out from both the heat storage heat exchanger (42) and the take-out heat exchanger (43), and is conveyed to the indoor heat exchanger (33) to cool the room.

The operation of the second cooling operation using heat storage is the same as that of the seventeenth embodiment, and the other operation such as the heat storage operation is the same as that of the third embodiment.

-Effects of Embodiment- As described above, according to the nineteenth embodiment, during the cooling operation using the heat storage, the outer heat and the inner melt can be used together to extract the cold heat. It can be carried out. As a result, rapid cooling can be performed,
Comfort can be improved. Other effects are the same as those of the third embodiment.

[0285]

Twentieth Embodiment As shown in FIG. 36, this embodiment embodies an example of the conveying means (31) in the eighteenth embodiment.

The transport means (31) comprises a secondary circuit (30)
To provide a circulation driving force to the secondary-side refrigerant. The heating-side heat exchanger (71), which is a high-pressure generating unit, the cooling-side heat exchanger (72), which is a low-pressure generating unit, stores the secondary-side refrigerant. First and second main tanks (T1, T2) and a sub tank (ST).

The heating heat exchanger (71) includes a drive circuit (8
0), the driving refrigerant is supplied, heat exchange is performed between the driving refrigerant and the secondary liquid refrigerant of the secondary circuit (30), and the secondary liquid refrigerant is heated and evaporated. ing. This 2
Due to the evaporation of the secondary liquid refrigerant, the inside of the heating heat exchanger (71) is brought into a high pressure state.

On the other hand, the cooling heat exchanger (72) is supplied with the driving refrigerant of the driving circuit (80), and exchanges heat between the driving refrigerant and the secondary gas refrigerant of the secondary circuit (30). The secondary gas refrigerant is cooled and condensed.
The condensation of the secondary gas refrigerant causes the cooling heat exchanger (7
The inside of 2) is in a low pressure state.

Then, one of the main tanks (T1, T2) is communicated with the heating heat exchanger (71) and pressurized to push out the secondary liquid refrigerant in the main tanks (T1, T2), and at the same time to push out the other. The main tanks (T1, T2) are communicated with the cooling heat exchanger (72) to reduce the pressure, and the secondary liquid refrigerant is recovered into the main tanks (T1, T2).

More specifically, a gas recovery pipe (74) is connected to the upper end of the cooling heat exchanger (72). The gas recovery pipe (74) is branched into three branch pipes (7b, 7b, 7b), and each branch pipe (7b) is individually provided at the upper end of each main tank (T1, T2) and sub tank (ST). It is connected. Each of the branch pipes (7b) has a first to third tank pressure reducing solenoid valves (SV1
1, SV12, SV13).

A liquid supply pipe (75) is connected to the lower end of the cooling heat exchanger (72). The liquid supply pipe (75)
Is branched into two branch pipes (7c, 7c), and each branch pipe (7c)
Are connected to the lower ends of the main tanks (T1, T2), respectively. Each main tank (T
Check valve (C) that allows only the recovery of the secondary refrigerant to (1, T2)
V) is provided.

On the other hand, a gas supply pipe (73) is connected to the upper end of the heating heat exchanger (71). The gas supply pipe (73) is branched into three branch pipes (7a, 7a, 7a). The branch pipes (7a) are connected to the branch pipes (7b) of the gas recovery pipe (74) and individually communicate with the main tanks (T1, T2) and the sub tank (ST). Each of the branch pipes (7a) has first to third tank pressurizing solenoid valves (SV21, SVV).
22, SV23).

[0293] A liquid recovery pipe (76) is connected to the lower end of the heating heat exchanger (71). The liquid recovery pipe (76)
Is connected to the lower end of the sub tank (ST). The liquid recovery pipe (76) is provided with a check valve (CV) that allows only the outflow of the secondary refrigerant from the sub tank (ST).

Each of the main tanks (T1, T2) is located at a position lower than the cooling heat exchanger (72). Further, the sub tank (ST) is installed at a position higher than the heating heat exchanger (71).

A liquid pipe for recovery (78) and a liquid pipe for extrusion (77) are connected to each of the main tanks (T1, T2). The recovery liquid pipe (78) is composed of two branch pipes (7e, 7e).
And each branch pipe (7e) is connected to each main tank (T1, T1).
It is connected to the lower end of 2). Each of the above branch pipes (7
e) is provided with a check valve (CV) that allows only the inflow of the secondary refrigerant into each of the main tanks (T1, T2).

On the other hand, the extrusion liquid pipe (77) is branched into three branch pipes (7d, 7d, 7d) and lowered. Each branch pipe (7
d) is connected to the branch pipe (7e) and the liquid recovery pipe (76) of the recovery liquid pipe (78), and communicates with the main tanks (T1, T2) and the sub tank (ST). The above branch pipe (7d)
The branch pipe (7d) connected to each of the main tanks (T1, T2) is provided with a check valve (CV) that allows only the outflow of the secondary refrigerant from the main tanks (T1, T2). on the other hand,
The branch pipe (7d) connected to the sub-tank (ST) is provided with a check valve (CV) that allows only the secondary refrigerant to flow into the sub-tank (ST).

The recovery liquid pipe (78) of the transport means (31)
Further, the extruding liquid pipe (77) is connected to the main passage (3a) via a four-way switching valve (32). And the above 2
The secondary circuit (30) is configured such that the secondary liquid refrigerant extruded from one of the main tanks (T1, T2) flows through the extruding liquid pipe (77) to the main passage (3a), and the main passage (3a). ) Is circulated and then collected in the other main tank (T1, T2) through the collection liquid pipe (78).

Further, the main passage (3a) is configured to reverse the circulation direction of the secondary refrigerant by switching the four-way switching valve (32).

The drive circuit (80) includes a drive compressor (8
1), the heating heat exchanger (71), the expansion valve (82), and the cooling heat exchanger (72) are sequentially connected by a refrigerant pipe, and the driving refrigerant circulates inside. The drive circuit (80) evaporates the secondary refrigerant in the secondary circuit (30) in the heating heat exchanger (71) to bring the inside of the heating heat exchanger (71) into a high pressure state, The exchanger (72) is configured to condense the secondary-side refrigerant of the secondary-side circuit (30) to reduce the pressure inside the cooling heat exchanger (72). Other configurations are the same as those of the eighteenth embodiment.

-Operating operation- Next, the operation of the transporting means (31) will be described.

First, in the drive circuit (80), the expansion valve (82) is adjusted to a predetermined opening degree, and in this state, the drive refrigerant circulates. The high-pressure driving refrigerant discharged from the driving compressor (51) flows to the heating heat exchanger (71), and is supplied to the heating heat exchanger (7).
In 1), heat exchange is performed with the secondary liquid refrigerant of the secondary circuit (30), and the refrigerant is condensed to become a high-pressure liquid refrigerant. At that time, the secondary liquid refrigerant is heated and evaporates. The driving refrigerant condensed in the heating heat exchanger (71) is decompressed by the expansion valve (82), and then exchanges heat with the secondary gas refrigerant in the secondary circuit (30) in the cooling exchanger (72). Evaporate. At that time, the secondary gas refrigerant is cooled and condensed. The driving refrigerant evaporated in the cooling exchanger (72) returns to the driving compressor (51) and repeats this circulation.

Next, the operation of the transport means (31) will be described. In addition, each solenoid valve (SV21, SV
12, SV23) in the following state.

First, the pressurizing solenoid valve (SV21) of the first main tank (T1), the pressurizing solenoid valve (SV23) of the sub tank (ST) and the depressurizing solenoid valve (SV12) of the second main tank (T2) are opened. Have been. On the other hand, the pressurizing solenoid valve (SV22) of the second main tank (T2) and the pressure reducing solenoid valve (SV22) of the first main tank (T1)
11) and the pressure reducing solenoid valve (SV13) of the sub tank (ST) are closed.

The four-way switching valve (32) of the secondary circuit (30)
Is switched to the solid line side in FIG. 2, for example, during normal cooling operation.

In this state, in the heating heat exchanger (71), the driving refrigerant of the driving circuit (80) and the secondary liquid refrigerant of the secondary circuit (30) exchange heat, and the secondary liquid is exchanged. The refrigerant is heated and evaporates. Due to the evaporation of the secondary liquid refrigerant, the inside of the heating heat exchanger (71) is brought into a high pressure state. When the pressurizing solenoid valve (SV21) is opened, the heating heat exchanger (71) communicates with the first main tank (T1), and the first main tank (T1) is pressurized. For this reason, the secondary liquid refrigerant stored in the first main tank (T1) is pushed out of the first main tank (T1) as shown by the solid arrow in FIG. The secondary liquid refrigerant pushed out of the first main tank (T1) flows from the branch pipe (7da) of the liquid pipe for extrusion (77) to the liquid pipe for extrusion (77), and flows through the four-way switching valve (32). Flows through the main passage (3a).

On the other hand, in the cooling heat exchanger (72), the driving refrigerant of the driving circuit (80) and the secondary gas refrigerant of the secondary circuit (30) exchange heat, and the secondary gas refrigerant is Cools and condenses. Due to the condensation of the secondary gas refrigerant, the inside of the cooling heat exchanger (72) is brought into a low pressure state.

Then, by opening the pressure reducing solenoid valve (SV12), the cooling heat exchanger (72) communicates with the second main tank (T2), and the pressure in the second main tank (T2) is reduced. For this reason, the second main tank (T2) has two main passages (3a).
The secondary liquid refrigerant is recovered. That is, as shown by the solid line arrow in FIG. 36, the secondary-side liquid refrigerant in the main passage (3a) is sucked, and the four-way switching valve (32), the collection liquid pipe (78), and the collection liquid pipe (78) ) Sequentially flows through the branch pipe (7e) and is collected in the second main tank (T2).

The main passage (3a) of the secondary circuit (30)
Then, for example, the above-described pushing out of the liquid secondary side refrigerant from the first main tank (T1) and the second main tank (T
The secondary refrigerant is circulated by the recovery of the liquid secondary refrigerant to 2), and the cold of the primary circuit (10) is transported to the indoor heat exchanger (33) to cool the room.

[0309] The sub tank (ST) of the transfer means (31) is pressure-equalized with the heating heat exchanger (71). For this reason, the secondary-side liquid refrigerant of the sub tank (ST) is supplied to the heating heat exchanger (71) via the liquid recovery pipe (76). This 2
The secondary liquid refrigerant evaporates in the heating heat exchanger (71) and contributes to pressurization of the first main tank (T1). After that, most of the liquid refrigerant on the secondary side of the sub tank (ST) is heated by the heat exchanger (71).
Is supplied to the sub tank (ST), the pressurized solenoid valve (SV
23) is closed and the pressure reducing solenoid valve (SV13) of the sub tank (ST) is opened. This allows the sub tank (S
T) is decompressed and flows through the extrusion liquid pipe (77).
Part of the secondary liquid refrigerant is recovered.

After performing such an operation for a predetermined time, each of the solenoid valves (SV21, SV22,...) Is switched. That is, the pressurizing solenoid valve (SV21) of the first main tank (T1), the depressurizing solenoid valve (SV12) of the second main tank (T2), and the depressurizing solenoid valve (SV13) of the sub tank (ST) are closed. On the other hand, the pressurized solenoid valve (SV22) of the second main tank (T2) and the first main tank (TV
Open the pressure reducing solenoid valve (SV11) of 1) and the pressurizing solenoid valve (SV23) of the sub tank (ST).

Thus, the pressure of the first main tank (T1) is reduced, and conversely, the pressure of the second main tank (T2) and the sub tank (ST) are increased. For this reason, the secondary-side liquid refrigerant pushed out from the second main tank (T2) circulates in the same manner as described above, and enters a refrigerant circulation state in which it is collected in the first main tank (T1). The secondary liquid refrigerant is supplied to the heating heat exchanger (71). Also in this case, when most of the secondary-side liquid refrigerant of the sub tank (ST) is supplied to the heating heat exchanger (71), the pressurized solenoid valve (SV23) of the sub tank (ST) is closed, and The pressure reducing solenoid valve (SV13) of the sub tank (ST) is opened,
Recovery of the secondary liquid refrigerant is performed.

As described above, each of the solenoid valves (SV21, SV22,
..), The secondary refrigerant is pushed out of the first main tank (T1) and simultaneously recovered in the second main tank (T2), and the secondary refrigerant is transferred to the second main tank (T2). ), And the operation of being recovered in the second main tank (T2) at the same time as the operation is performed alternately. And
The secondary refrigerant circulates through the main passage (3a), and a normal cooling operation or the like is performed. Other operations are the same as those of the eighteenth embodiment.

-Effect of Embodiment- As described above, according to the twentieth embodiment, the first main tank (T1) and the second main tank (T2) are pressurized and decompressed to circulate the secondary refrigerant. With this configuration, power consumption can be reduced as compared with a refrigerant pump or the like, and the frequency of occurrence of a failure or the like can be reduced, and reliability can be improved. Other effects are the same as those of the eighteenth embodiment.

[0314]

Embodiment 21 In this embodiment, as shown in FIG. 37, the compressor (81) of the drive circuit (80) in Embodiment 20 also serves as the compressor (51) of the auxiliary circuit (50). It is like that.

That is, the refrigerant pipe on the discharge side of the compressor (81) is branched into two, and each of the refrigerant pipes is connected to the heating heat exchanger (71), while the auxiliary utilization heat exchanger (52) It is connected to the. The refrigerant pipe on the suction side of the compressor (81) is branched into two, and each refrigerant pipe is connected to the cooling heat exchanger (72) and connected to the auxiliary heat source heat exchanger (53). ing.

Therefore, the driving refrigerant in the driving circuit (80) also serves as the auxiliary refrigerant in the auxiliary circuit (50), and the driving refrigerant in the driving circuit (80) circulates in the same manner as in the twentieth embodiment. At the same time, during the heating operation using heat storage, the driving refrigerant circulates through the auxiliary heat exchanger (52) and the auxiliary heat source heat exchanger (53) to extract the heat of the heat storage tank (41). Other configurations and operations are the same as those in the twentieth embodiment.

-Effects of Embodiment- As described above, according to the twenty-first embodiment, the drive circuit (8
0) and the compressor (81) of the auxiliary circuit (50), the number of components can be reduced, and the circuit configuration can be simplified. As a result,
The size of the entire apparatus can be reduced, and the cost can be reduced. Other effects are described in the second embodiment.
Same as 0.

[0318]

Embodiment 22 In this embodiment, as shown in FIG. 38, a radiating heat exchanger (79) is provided in the conveying means (31) of Embodiment 20.

The radiating heat exchanger (79) is provided in the extruding liquid pipe (77) and is connected between the heating heat exchanger (71) and the expansion valve (EV) in the drive circuit (80). ing. The radiating heat exchanger (79) is connected to each main tank (T1,
The secondary liquid refrigerant of the secondary circuit (30) extruded from T2) and the drive refrigerant of the drive circuit (80) are configured to exchange heat. The heat radiation heat exchanger (79) balances the amount of heat exchange in the cooling heat exchanger (72) and the amount of heat exchange in the heating heat exchanger (71) by heat exchange between the two refrigerants.

That is, in order to reliably apply the circulation driving force to the secondary refrigerant in the secondary circuit (20), the secondary liquid in the secondary circuit (20) in the heating heat exchanger (71) is required. It is necessary to make the amount of evaporation of the refrigerant equal to the amount of condensation of the secondary gas refrigerant in the secondary circuit (20) in the cooling heat exchanger (72).

Therefore, the heat radiation amount of the driving refrigerant of the driving circuit (80) in the heating heat exchanger (71) and the heat absorption amount of the driving refrigerant of the driving circuit (80) in the cooling heat exchanger (72) are determined. Must be balanced.

Therefore, in the present embodiment, the heat radiation heat exchanger (79) is provided, and the heat input to the driving compressor (81) is radiated by the heat radiation heat exchanger (79), so that the heat radiation heat exchanger (79) is provided. The heat radiation amount in the exchanger (71) and the heat absorption amount in the cooling heat exchanger (72) are balanced. Other configurations and operations are the same as those in the twentieth embodiment.

-Effects of Embodiment- As described above, according to the twenty-second embodiment, the drive circuit (8
0) is equipped with a heat radiation heat exchanger (79).
The amount of heat released from the heating heat exchanger (71) and the cooling heat exchanger (7
The amount of heat absorbed in 2) can be balanced.
As a result, it is possible to reliably apply the circulation driving force to the secondary refrigerant of the secondary circuit (20). Other effects are the same as those of the twentieth embodiment.

[0324]

Twenty-third Embodiment In this embodiment, as shown in FIG.
This is provided with the same heat radiation heat exchanger (79) as in (2).

The heat radiating heat exchanger (79) is provided in the extruding liquid pipe (77) and connected between the heating heat exchanger (71) and the expansion valve (EV) in the drive circuit (80). ing. The radiating heat exchanger (79) is connected to each main tank (T1,
The heat exchange between the secondary liquid refrigerant of the secondary circuit (30) extruded from T2) and the driving refrigerant of the drive circuit (80) is performed, and the heat exchange amount and heating heat in the cooling heat exchanger (72) are exchanged. Exchanger (71)
The amount of heat exchange is balanced.

Therefore, according to the twenty-third embodiment, as in the twenty-second embodiment, the amount of heat radiation in the heating heat exchanger (71) and the amount of heat absorption in the cooling heat exchanger (72) can be balanced. As a result, it is possible to reliably apply the circulation driving force to the secondary refrigerant of the secondary circuit (20). Other configurations, operations, and effects are the same as those of the twenty-second embodiment.

[0327]

Other Embodiments In each of the embodiments, 1
Although the secondary circuit (20) is constituted by a vapor compression refrigeration cycle, various heat sources such as an absorption refrigeration cycle may be applied to the invention described in claim 1.

[0328] In the invention according to the first aspect, the air conditioner may be exclusively used for cooling, which performs only the cold storage operation, the heat storage cooling operation, and the normal cooling operation. It may be a heating-only device that performs only the heating operation.

In the cooling operation using the heat storage in each of the embodiments, the cooling operation using only the heat storage without the normal cooling operation may be performed. On the contrary, the cooling operation using only the heat storage is not performed. Alternatively, only the combined operation of the cooling using the heat storage and the normal cooling may be performed.

In the heating operation using the heat storage in each of the embodiments, the heating operation using only the heat storage without using the normal heating operation may be performed. In the heating operation using heat storage in 8, 10 to 16, the heating operation using only heat storage may not be performed, and only the combined operation of heating using heat storage and normal heating may be performed.

Also, the circulating pump (4
4) is disposed downstream of the take-out heat exchanger (43) and the like, but may of course be disposed upstream of the take-out heat exchanger (43) and the like.

The transport means (31) of the twentieth embodiment comprises:
Of course, the present invention may be applied to other embodiments such as the first embodiment.

Further, the number of the main tanks (T1, T2) in the carrying means (31) of the twentieth embodiment or the like may be one, or three or more.

Further, in Embodiments 17 to 23, a plurality of indoor units (1B) and heat storage units (1C) may be provided as in Embodiment 16.

[Brief description of the drawings]

FIG. 1 is a circuit diagram showing a first embodiment of the present invention.

FIG. 2 is a circuit diagram illustrating a cold storage operation according to the first embodiment of the present invention.

FIG. 3 is a circuit diagram illustrating a cooling operation using heat storage according to the first embodiment of the present invention.

FIG. 4 is a circuit diagram illustrating a normal cooling operation according to the first embodiment of the present invention.

FIG. 5 is a circuit diagram illustrating a thermal storage operation according to the first embodiment of the present invention.

FIG. 6 is a circuit diagram showing a heating operation using heat storage according to the first embodiment of the present invention.

FIG. 7 is a circuit diagram illustrating a normal heating operation according to the first embodiment of the present invention.

FIG. 8 is a circuit diagram showing a second embodiment of the present invention.

FIG. 9 is a circuit diagram showing a third embodiment of the present invention.

FIG. 10 is a Mollier diagram showing a heating operation using heat storage according to Embodiment 3 of the present invention.

FIG. 11 is a circuit diagram showing a fourth embodiment of the present invention.

FIG. 12 is a circuit diagram showing a fifth embodiment of the present invention.

FIG. 13 is a circuit diagram showing Embodiment 6 of the present invention.

FIG. 14 is a circuit diagram showing a seventh embodiment of the present invention.

FIG. 15 is a circuit diagram showing Embodiment 8 of the present invention.

FIG. 16 is a circuit diagram illustrating a pull-down operation according to an eighth embodiment of the present invention.

FIG. 17 is a circuit diagram illustrating a cold storage operation according to an eighth embodiment of the present invention.

FIG. 18 is a circuit diagram illustrating a cooling operation using heat storage according to an eighth embodiment of the present invention.

FIG. 19 is a circuit diagram illustrating a normal cooling operation according to an eighth embodiment of the present invention.

FIG. 20 is a circuit diagram illustrating a combined use operation of cooling using heat storage and normal cooling according to Embodiment 8 of the present invention.

FIG. 21 is a circuit diagram illustrating a warm heat storage operation according to an eighth embodiment of the present invention.

FIG. 22 is a circuit diagram showing a heating operation using heat storage according to Embodiment 8 of the present invention.

FIG. 23 is a circuit diagram illustrating a normal heating operation according to an eighth embodiment of the present invention.

FIG. 24 is a circuit diagram showing a combined operation of heat storage heating and normal heating according to an eighth embodiment of the present invention.

FIG. 25 is a circuit diagram showing a ninth embodiment of the present invention.

FIG. 26 is a circuit diagram showing a tenth embodiment of the present invention.

FIG. 27 is a circuit diagram showing Embodiment 11 of the present invention.

FIG. 28 is a circuit diagram showing a twelfth embodiment of the present invention.

FIG. 29 is a circuit diagram showing a thirteenth embodiment of the present invention.

FIG. 30 is a circuit diagram showing a fourteenth embodiment of the present invention.

FIG. 31 is a circuit diagram showing a fifteenth embodiment of the present invention.

FIG. 32 is a circuit diagram showing a sixteenth embodiment of the present invention.

FIG. 33 is a circuit diagram showing a seventeenth embodiment of the present invention.

FIG. 34 is a circuit diagram showing Embodiment 18 of the present invention.

FIG. 35 is a circuit diagram showing a nineteenth embodiment of the present invention.

FIG. 36 is a circuit diagram showing a twentieth embodiment of the present invention.

FIG. 37 is a circuit diagram showing Embodiment 21 of the present invention.

FIG. 38 is a circuit diagram showing a twenty-second embodiment of the present invention.

FIG. 39 is a circuit diagram showing a twenty-third embodiment of the present invention.

[Explanation of symbols]

 10 Heat storage air conditioner 1A Outdoor unit 1B Indoor unit 1C Heat storage unit 11 Main heat exchanger 12 Auxiliary heat exchanger 20 Primary circuit 21 Compressor 23 Heat source side heat exchanger 2a Main passage 2b Bypass passage 30 Secondary circuit 31 Transportation means 33 Indoor heat exchanger (use side heat exchanger) 40 Heat storage circuit 41 Heat storage tank 42 Heat storage heat exchanger 43 Removal heat exchanger 45 Preheat heat exchanger 47 Heat storage auxiliary heat exchanger 4a Heat storage passage 4b Circulation passage 4c, 4f Removal passage 4d Use passage 4e Auxiliary passage 50 Auxiliary circuit 52 Auxiliary heat exchanger 53 Auxiliary heat source heat exchanger 71 Heating heat exchanger 72 Cooling heat exchanger 79 Heat radiation heat exchanger T1, T2 Main tank ST Sub tank 80 Drive Circuit 81 compressor

Claims (26)

[Claims] A primary circuit (20) connected to a main heat exchanger (11) so that a primary heat medium serving as a heat source circulates through the main heat exchanger (11); 31), the main heat exchanger (11) and the use side heat exchanger (33) are connected, and a secondary heat medium is provided between the main heat exchanger (11) and the use side heat exchanger (33). Is connected to the secondary circuit (30) so that the secondary heat medium of the secondary circuit (30) circulates, and the heat storage medium is stored therein. A heat storage circuit (40) having a heat storage tank (41), wherein the secondary heat medium circulates between the heat storage circuit (40) and the main heat exchanger (11), Is 1 in the main heat exchanger (11)
A heat storage operation in which heat obtained from the secondary heat medium is stored in the thermal storage tank (41); and the secondary heat medium circulates between the thermal storage circuit (40) and the use side heat exchanger (33). The secondary heat medium is a heat storage tank (41)
A heat storage operation in which the stored heat is transferred to the use side heat exchanger (33) to perform air conditioning; and the secondary heat medium circulates through the secondary circuit (30) and the secondary heat medium becomes main heat. Heat storage characterized in that the heat obtained from the primary heat medium in the exchanger (11) is conveyed to the use side heat exchanger (33) to perform at least a normal operation for air conditioning. Type air conditioner. 2. The heat storage type air conditioner according to claim 1, wherein the heat storage use operation is performed by a heat storage circuit (40) and a use side heat exchanger (3).
At the same time, the secondary heat medium circulates through the secondary circuit (30), and the secondary heat medium circulates between the cold storage heat and the main heat of the heat storage tank (41). A regenerative air conditioner characterized by being configured to convey cooling and heat obtained from a primary-side heat medium in an exchanger (11) to a use-side heat exchanger (33) for cooling. 3. The heat storage type air conditioner according to claim 1, wherein the heat storage use operation is performed by using a heat storage circuit (40) and a use side heat exchanger (3).
At the same time as the secondary heat medium circulates between the secondary heat medium and the secondary heat medium circulates in the secondary circuit (30), the secondary heat medium circulates in the heat storage tank (41) and the main heat storage. A regenerative air-conditioning apparatus characterized in that the heat obtained from a primary-side heat medium in an exchanger (11) is transferred to a use-side heat exchanger (33) for heating. 4. The regenerative air conditioner according to claim 1, wherein the primary circuit (20) circulates a primary heat medium serving as a cold heat source and a hot heat source through the main heat exchanger (11). The heat storage circuit (40) is connected to the secondary side circuit (30) and the heat storage heat exchanger (42) through which the secondary side heat medium flows is used as the heat storage tank (41).
The heat storage tank (41) is connected to a secondary circuit (30) so that the heat storage medium and the secondary heat medium exchange heat. While the heat exchanger for extracting heat storage (43) is connected, the heat storage operation is performed by circulating the secondary heat medium between the main heat exchanger (11) and the heat exchanger for heat storage (42) to cool the heat. The heat storage operation and the heat storage operation are performed. In the heat storage operation, the secondary heat medium is removed by the heat exchanger (4
Circulation between 3) and the use side heat exchanger (33) to perform heat storage use cooling operation and heat storage use heating operation. In normal operation, the secondary heat medium is used with the main heat exchanger (11). A regenerative air conditioner characterized by performing a normal cooling operation and a normal heating operation by circulating between the side heat exchanger (33). 5. The regenerative air conditioner according to claim 1, wherein the primary circuit (20) circulates a primary heat medium serving as a cold heat source and a warm heat source through the main heat exchanger (11). The heat storage circuit (40) is connected to the secondary side circuit (30) and the heat storage heat exchanger (42) through which the secondary side heat medium flows is used as the heat storage tank (41).
And a heat storage tank connected to the secondary circuit (30) so that the heat storage medium exchanges heat with the secondary heat medium. The auxiliary heat source heat exchanger (53) exchanges heat with the heat storage in the heat storage tank (41) while the auxiliary heat exchanger (53) exchanges heat with the secondary heat medium An auxiliary circuit (50) for circulating an auxiliary refrigerant between the heat exchanger (52) is provided. The heat storage operation is performed by connecting the secondary heat medium between the main heat exchanger (11) and the heat storage heat exchanger (42). In the heat storage operation, the secondary-side heat medium is removed by the removal heat exchanger (4).
Heat storage cooling operation circulating between 3) and the use side heat exchanger (33), so that the auxiliary refrigerant condenses in the auxiliary use heat exchanger (52) and evaporates in the auxiliary heat source heat exchanger (53) The secondary storage heat medium circulates between the auxiliary use heat exchanger (52) and the use side heat exchanger (33) while the auxiliary refrigerant circulates through the auxiliary circuit (50). In the normal operation, the secondary heat medium circulates between the main heat exchanger (11) and the use side heat exchanger (33) to perform a normal cooling operation and a normal heating operation. Thermal storage type air conditioner. 6. The regenerative air conditioner according to claim 1, wherein the primary circuit (20) has a reversible primary heat medium between the main heat exchanger (11) and the heat source heat exchanger. The heat storage circuit (40) is connected to the secondary circuit (30), and the heat storage heat exchanger (42) through which the secondary heat medium flows is connected to the heat storage tank (41). )
And a heat storage tank connected to the secondary circuit (30) so that the heat storage medium exchanges heat with the secondary heat medium. The auxiliary heat exchanger (12) through which the secondary heat medium circulates so that the evaporating primary heat medium and the secondary heat medium exchange heat while the heat exchanger (43) for taking out the heat is connected. ) Is provided, and the heat storage operation is performed by circulating the secondary heat medium between the main heat exchanger (11) and the heat storage heat exchanger (42). In the heat storage operation, the secondary heat medium is taken out by the heat exchanger (4).
Cooling operation utilizing heat storage circulating between 3) and the use-side heat exchanger (33), and the auxiliary heat exchanger (1
Main heat exchanger (11) in which the primary heat medium condenses while the secondary heat medium circulates between 2) and the take-out heat exchanger (43)
A heating operation utilizing heat storage in which a secondary heat medium circulates between the heat exchanger and the use side heat exchanger (33) is performed. A regenerative air conditioner characterized by performing a normal cooling operation and a normal heating operation by circulating between the exchanger (33). 7. The regenerative air conditioner according to claim 1, wherein the primary circuit (20) circulates a primary heat medium serving as a cold heat source and a hot heat source through the main heat exchanger (11). The heat storage circuit (40) is connected to the secondary side circuit (30) and the heat storage heat exchanger (42) through which the secondary side heat medium flows is used as the heat storage tank (41).
And the heat storage heat exchanger (42) is configured as a static heat storage circuit that stores heat in the heat storage medium and takes out the heat storage. A cold storage operation and a warm storage operation are performed by circulating between the heat exchanger (11) and the heat storage heat exchanger (42). In the heat storage operation, the secondary heat medium is a heat storage heat exchanger (42).
The cooling operation using heat storage and the heating operation using heat storage are performed by circulating between the heat exchanger and the use side heat exchanger (33). In the normal operation, the secondary heat medium is composed of the main heat exchanger (11) and the use side heat. A regenerative air conditioner characterized by performing a normal cooling operation and a normal heating operation by circulating between the exchanger (33). 8. The regenerative air conditioner according to claim 1, wherein the primary circuit (20) circulates a primary heat medium serving as a cold heat source and a hot heat source through the main heat exchanger (11). The heat storage circuit (40) is connected to the secondary side circuit (30) and the heat storage heat exchanger (42) through which the secondary side heat medium flows is used as the heat storage tank (41).
And the heat exchanger for heat storage (42) is configured as a static heat storage circuit for storing heat in a heat storage medium and extracting the heat storage, while assisting heat exchange with the heat storage of the heat storage tank (41). An auxiliary circuit (50) that circulates an auxiliary refrigerant between the heat source heat exchanger (53) and the auxiliary heat exchanger (52) that exchanges heat with the secondary-side heat medium is provided. The side heat medium circulates between the main heat exchanger (11) and the heat storage heat exchanger (42) to perform the cold heat storage operation and the warm heat storage operation. Heat exchanger (42)
Cooling operation circulating between the heat exchanger and the use side heat exchanger (33), and the auxiliary refrigerant is condensed in the auxiliary use heat exchanger (52) and evaporated in the auxiliary heat source heat exchanger (53). While the auxiliary refrigerant circulates through the auxiliary circuit (50), the secondary heat medium performs a heat storage use heating operation in which the secondary heat medium circulates between the auxiliary use heat exchanger (52) and the use side heat exchanger (33), In the normal operation, the secondary-side heat medium circulates between the main heat exchanger (11) and the use-side heat exchanger (33) to perform a normal cooling operation and a normal heating operation. Air conditioner. 9. The regenerative air conditioner according to claim 8, wherein the auxiliary heat source heat exchanger (53) of the auxiliary refrigerant circuit includes a heat storage tank (4).
A regenerative air conditioner, which is provided inside 1). 10. The regenerative air-conditioning apparatus according to claim 1, wherein the primary circuit (20) has a primary heat exchanger between the main heat exchanger (11) and the heat source side heat exchanger (23). The heat storage circuit (40) is connected to the secondary circuit (30), and the heat storage heat exchanger (42) through which the secondary heat medium flows is configured to store heat. Tank (41)
And the heat storage heat exchanger (42) is configured as a static heat storage circuit for storing heat in the heat storage medium and extracting the heat storage, while the heat storage medium and the secondary-side heat medium exchange heat. An auxiliary heat exchanger (12) including a removal heat exchanger (43) and an auxiliary heat exchanger (12) through which the secondary refrigerant circulates so as to exchange heat between the evaporating primary heat medium and the secondary heat medium. A passage (4e) is provided, and in the heat storage operation, the secondary heat medium circulates between the main heat exchanger (11) and the heat storage heat exchanger (42) to perform the cold heat storage operation and the hot heat storage operation. In the heat storage operation, the secondary heat medium is a heat storage heat exchanger (42).
Cooling operation using heat storage that circulates between the heat exchanger and the use-side heat exchanger (33), and between the auxiliary heat exchanger (12) where the primary heat medium evaporates and the removal heat exchanger (43). A heat storage utilizing heating operation in which the secondary heat medium circulates between the main heat exchanger (11) where the primary heat medium condenses and the use heat exchanger (33) while the secondary heat medium circulates. The normal operation is characterized in that the secondary heat medium circulates between the main heat exchanger (11) and the use side heat exchanger (33) to perform the normal cooling operation and the normal heating operation. Heat storage type air conditioner. 11. The regenerative air conditioner according to claim 1, wherein the primary side circuit (20) has a primary side heat exchanger between the main heat exchanger (11) and the heat source side heat exchanger (23). The heat storage circuit (40) includes a heat storage tank (41), a preheat heat exchanger (45) that preheats the heat storage medium during the cold storage operation, and a heat storage medium. The heat exchanger for heat storage (42) is configured as a dynamic heat storage circuit in which the heat exchanger (42) is sequentially connected to the heat exchanger (42).
Auxiliary heat, which is connected to the secondary circuit (30) so as to exchange heat between the secondary heat medium and the heat storage medium, while exchanging heat between the high-temperature primary heat medium and the secondary heat medium The heat exchanger (12) is connected and the preheat heat exchanger (4
5) is connected to the auxiliary passage (4
e) is provided. In the heat storage operation, the secondary heat medium circulates through the auxiliary passage (4e), and the secondary heat medium preheats the heat storage medium in the preheat heat exchanger (45). The cold storage operation in which the heat medium circulates between the main heat exchanger (11) and the heat storage heat exchanger (42), and the secondary heat medium is the main heat exchanger (11) and the heat storage heat exchanger ( The heat storage operation is performed by circulating between the heat exchanger and the heat storage operation.
A first heat storage cooling operation circulating between the heat exchanger for use and the use side heat exchanger (33), and a secondary heat medium is provided between the heat exchanger for heat storage (42) and the use side heat exchanger (33). At the same time, the secondary heat medium circulates between the main heat exchanger (11) and the use side heat exchanger (33), and the secondary heat medium is used for heat storage. A first heat-storage-based heating operation that circulates between the heat exchanger (42) and the use-side heat exchanger (33); While circulating between (33) and the secondary heat medium, the main heat exchanger (11)
A second heat storage utilizing heating operation circulating between the heat exchanger and the use side heat exchanger (33) is performed. In the normal operation, the secondary heat medium includes the main heat exchanger (11) and the use side heat exchanger ( 33) for performing a normal cooling operation and a normal heating operation. 12. The regenerative air conditioner according to claim 1, wherein the primary circuit (20) has a primary heat exchanger between the main heat exchanger (11) and the heat source side heat exchanger (23). The heat storage circuit (40) includes a heat storage tank (41), a preheat heat exchanger (45) that preheats the heat storage medium during the cold storage operation, and a heat storage medium. The heat exchanger for heat storage (42) is configured as a dynamic heat storage circuit in which the heat exchanger (42) is sequentially connected to the heat exchanger (42).
Connected to the secondary circuit (30) to exchange heat between the secondary heat medium and the heat storage medium, while the high-temperature primary heat medium flows and the primary heat medium evaporates The auxiliary heat exchanger (12) is connected to the preheat heat exchanger (45) and the heat storage heat exchanger (42) so as to be switchable, and the auxiliary passage (4e) through which the secondary heat medium circulates is connected. In the heat storage operation, the secondary-side heat medium circulates through the auxiliary passage (4e), and the secondary-side heat medium preheats the heat-storage medium in the preheat heat exchanger (45). Cold heat storage operation circulating between the main heat exchanger (11) and the heat storage heat exchanger (42), and the secondary side heat medium is connected to the main heat exchanger (11) and the heat storage heat exchanger (42). The heat storage operation is performed by circulating the secondary heat medium between the heat storage heat exchanger (42) and the use side heat exchanger (33). Cold storage using heat storage During operation, the secondary heat medium circulates between the heat storage heat exchanger (42) and the use side heat exchanger (33), and at the same time, the secondary heat medium is connected to the main heat exchanger (11) and the use side. A second cooling operation utilizing heat storage circulating between the heat exchanger (33) and 1
While the secondary heat medium circulates between the auxiliary heat exchanger (12) where the secondary heat medium evaporates and the heat storage heat exchanger (42), the main heat exchanger (where the primary heat medium condenses) A heating operation utilizing heat storage, in which a secondary heat medium circulates between the heat exchanger (11) and the use-side heat exchanger (33), is used. In normal operation, the secondary heat medium is used with the main heat exchanger (11). A regenerative air conditioner characterized by performing a normal cooling operation and a normal heating operation by circulating between the side heat exchanger (33). 13. The regenerative air conditioner according to claim 1, wherein the primary circuit (20) circulates a primary heat medium serving as a cold heat source and a hot heat source through the main heat exchanger (11). The heat storage circuit (40) includes a heat storage tank (41), a preheat heat exchanger (45) for preheating the heat storage medium during the cold storage operation, and a heat storage heat exchanger (42). And the heat exchanger for heat storage (42)
A heat storage auxiliary heat exchanger (47), which is connected to the secondary circuit (30) so as to exchange heat between the secondary heat medium and the heat storage medium, and exchanges heat with the secondary refrigerant; An auxiliary circuit (50) for circulating an auxiliary refrigerant between the preheat heat exchanger (45) and the preheat heat exchanger (45) is provided. In the heat storage operation, the auxiliary refrigerant circulates through the auxiliary circuit (50) and the auxiliary refrigerant is preheated. A cold storage operation in which the secondary heat medium circulates between the main heat exchanger (11) and the heat storage heat exchanger (42) while condensing in the heat exchanger (45) to preheat the heat storage medium; The secondary heat medium circulates between the main heat exchanger (11) and the heat storage heat exchanger (42) to perform a warm heat storage operation. In the heat storage utilization operation, the secondary heat medium uses the heat storage heat. Exchanger (42)
A first heat storage cooling operation circulating between the heat exchanger for use and the use side heat exchanger (33), and a secondary heat medium is provided between the heat exchanger for heat storage (42) and the use side heat exchanger (33). At the same time, the secondary heat medium circulates between the main heat exchanger (11) and the use side heat exchanger (33), and the secondary heat medium is used for heat storage. A first heat-storage-based heating operation that circulates between the heat exchanger (42) and the use-side heat exchanger (33), and the secondary-side heat medium includes a heat-storage heat exchanger (42) and a use-side heat exchanger (33), a secondary heat medium performs a second heat storage utilizing heating operation in which the secondary heat medium circulates between the main heat exchanger (11) and the use side heat exchanger (33), In the normal operation, the secondary-side heat medium circulates between the main heat exchanger (11) and the use-side heat exchanger (33) to perform a normal cooling operation and a normal heating operation. Air conditioner. 14. The regenerative air conditioner according to claim 1, wherein the primary circuit (20) circulates a primary heat medium serving as a cold heat source and a hot heat source through the main heat exchanger (11). The heat storage circuit (40) includes a heat storage tank (41), a preheat heat exchanger (45) for preheating the heat storage medium during the cold storage operation, and a heat storage heat exchanger (42). In addition to being configured as a dynamic heat storage circuit, the heat storage heat exchanger (42)
A heat storage auxiliary heat exchanger (47) that is connected to the secondary circuit (30) so as to exchange heat between the secondary heat medium and the heat storage medium, and that exchanges heat with the secondary refrigerant; An auxiliary circuit (50) for circulating an auxiliary refrigerant between the preheat heat exchanger (45) for heat exchange and the auxiliary refrigerant is provided. In the heat storage operation, the auxiliary refrigerant circulates through the auxiliary circuit (50), and A cold storage operation in which the secondary heat medium circulates between the main heat exchanger (11) and the heat storage heat exchanger (42) while condensing in the exchanger (45) to preheat the heat storage medium; The secondary heat medium performs a heat storage operation in which the secondary heat medium circulates between the main heat exchanger (11) and the heat storage heat exchanger (42). (42)
A first heat storage cooling operation circulating between the heat exchanger for use and the use side heat exchanger (33), and a secondary heat medium is provided between the heat exchanger for heat storage (42) and the use side heat exchanger (33). At the same time, the secondary heat medium circulates between the main heat exchanger (11) and the use-side heat exchanger (33), and the auxiliary refrigerant uses the heat storage auxiliary heat exchanger. Preheat heat exchanger condensed in (47) (45)
The secondary heat medium circulates between the auxiliary heat exchanger (47) and the use-side heat exchanger (33) while the auxiliary refrigerant circulates through the auxiliary circuit (50) such that the auxiliary refrigerant evaporates. And the auxiliary refrigerant circulates through the auxiliary circuit (50) such that the auxiliary refrigerant condenses in the auxiliary heat storage heat exchanger (47) and evaporates in the preheat heat exchanger (45). The side heat medium circulates between the auxiliary heat storage heat exchanger (47) and the use side heat exchanger (33), and at the same time, the secondary side heat medium is connected to the main heat exchanger (11) and the use side heat exchanger (33). And a second heat storage heating operation circulating between the main heat exchanger (11) and the use side heat exchanger (33). And performing a normal cooling operation and a normal heating operation. 15. The regenerative air conditioner according to claim 1, wherein the primary circuit (20) circulates a primary heat medium serving as a cold heat source and a hot heat source through the main heat exchanger (11). The heat storage circuit (40) consists of a heat storage tank (41) and a heat storage heat exchanger (4
2) are connected in order to form a dynamic heat storage circuit, and the heat storage heat exchanger (42) is configured to exchange heat between the secondary heat medium and the heat storage medium. While connected to the circuit (30), the heat storage operation includes a cold heat storage operation in which the secondary heat medium circulates between the main heat exchanger (11) and the heat storage heat exchanger (42). A heat storage operation is performed in which the heat medium circulates between the main heat exchanger (11) and the heat storage heat exchanger (42). In the heat storage use operation, the secondary heat medium uses the heat storage heat exchanger (42).
A first heat storage cooling operation circulating between the heat exchanger for use and the use side heat exchanger (33), and a secondary heat medium is provided between the heat exchanger for heat storage (42) and the use side heat exchanger (33). At the same time, the secondary heat medium circulates between the main heat exchanger (11) and the use side heat exchanger (33), and the secondary heat medium is used for heat storage. A first heat-storage-based heating operation that circulates between the heat exchanger (42) and the use-side heat exchanger (33), and the secondary-side heat medium includes a heat-storage heat exchanger (42) and a use-side heat exchanger While circulating between (33) and the secondary heat medium, the main heat exchanger (11)
A second heat storage utilizing heating operation circulating between the heat exchanger and the use side heat exchanger (33) is performed. In the normal operation, the secondary heat medium includes the main heat exchanger (11) and the use side heat exchanger ( 33) for performing a normal cooling operation and a normal heating operation. 16. The regenerative air conditioner according to claim 1, wherein the primary circuit (20) circulates a primary heat medium serving as a cold heat source and a hot heat source through the main heat exchanger (11). The heat storage circuit (40) consists of a heat storage tank (41) and a heat storage heat exchanger (4
2) are connected in order to form a dynamic heat storage circuit, and the heat storage heat exchanger (42) is configured to exchange heat between the secondary heat medium and the heat storage medium. While connected to the circuit (30), the auxiliary heat source heat exchanger (53) that exchanges heat with the heat storage of the heat storage tank (41), and the auxiliary use heat exchanger (52) that exchanges heat with the secondary heat medium. An auxiliary circuit (50) is provided for circulating an auxiliary refrigerant between the main heat exchanger (11) and the heat storage heat exchanger (42). The heat storage operation and the secondary heat medium circulate between the main heat exchanger (11) and the heat storage heat exchanger (42) to perform a warm heat storage operation. Is a heat exchanger for heat storage (42)
A first heat storage cooling operation circulating between the heat exchanger for use and the use side heat exchanger (33), and a secondary heat medium is provided between the heat exchanger for heat storage (42) and the use side heat exchanger (33). At the same time, the secondary heat medium circulates between the main heat exchanger (11) and the use side heat exchanger (33), the second heat storage utilizing cooling operation, and the auxiliary refrigerant uses the auxiliary use heat exchanger. The secondary heat medium is used with the auxiliary heat exchanger (52) while circulating the auxiliary refrigerant in the auxiliary circuit (50) so that the auxiliary refrigerant is condensed in (52) and evaporated in the auxiliary heat source heat exchanger (53). A first heat storage utilizing heating operation circulating between the side heat exchanger (33) and an auxiliary refrigerant condensing in the auxiliary use heat exchanger (52) and evaporating in the auxiliary heat source heat exchanger (53). While the auxiliary refrigerant circulates in the auxiliary circuit (50), the secondary heat medium circulates between the auxiliary use heat exchanger (52) and the use side heat exchanger (33), and at the same time, the secondary heat medium A second heat storage utilizing heating operation circulating between the main heat exchanger (11) and the use-side heat exchanger (33) is performed. In the normal operation, the secondary heat medium is used as the main heat exchanger (11). A regenerative air conditioner characterized by performing normal cooling operation and normal heating operation by circulating between a heat exchanger and a use side heat exchanger (33). 17. The regenerative air conditioner according to claim 1, wherein the primary circuit (20) has a primary heat exchanger between the main heat exchanger (11) and the heat source side heat exchanger (23). The medium is configured so that the medium reversibly circulates in a phase change. The heat storage circuit (40) includes a heat storage tank (41) and a heat storage heat exchanger (4).
2) are connected in order to form a dynamic heat storage circuit, and the heat storage heat exchanger (42) is configured to exchange heat between the secondary heat medium and the heat storage medium. A heat storage auxiliary heat exchanger (47), which is connected to the circuit (30) and exchanges heat with the heat storage medium and the secondary heat medium, and exchanges heat between the high-temperature primary heat medium and the secondary heat medium. An auxiliary passage (4e) is provided to connect to the auxiliary heat exchanger (12) and circulate the secondary heat medium. In the heat storage operation, the secondary heat medium is connected to the main heat exchanger (11) and heat for heat storage. A cold heat storage operation circulating between the heat exchanger and the secondary heat medium circulates between the main heat exchanger (11) and the heat exchanger for heat storage (42) to perform a warm heat storage operation. In the heat storage operation, the secondary heat medium is a heat storage heat exchanger (42)
A first heat storage cooling operation circulating between the heat exchanger for use and the use side heat exchanger (33), and a secondary heat medium is provided between the heat exchanger for heat storage (42) and the use side heat exchanger (33). At the same time, the secondary heat medium circulates between the main heat exchanger (11) and the use side heat exchanger (33), the second heat storage utilizing cooling operation, and the heat storage auxiliary heat exchanger (47) The main heat exchanger (11) where the primary heat medium condenses while the secondary heat medium circulates between the heat exchanger and the auxiliary heat exchanger (12) where the primary heat medium evaporates, and the use side heat exchange. Tableware (33)
Between the first heat storage utilizing heating operation in which the secondary heat medium circulates between the heat storage auxiliary heat exchanger (47) and the auxiliary heat exchanger (12) in which the primary heat medium evaporates. While the secondary heat medium circulates, the secondary heat medium circulates between the main heat exchanger (11), where the primary heat medium condenses, and the use-side heat exchanger (33). A second heat storage utilizing heating operation in which the heat medium circulates between the main heat exchanger (11) and the use side heat exchanger (33) is performed. In the normal operation, the secondary heat medium is used as the main heat exchanger. A regenerative air conditioner characterized by performing normal cooling operation and normal heating operation by circulating between (11) and a use side heat exchanger (33). 18. The regenerative air conditioner according to claim 1, wherein the primary circuit (20) has a primary heat exchanger between the main heat exchanger (11) and the heat source heat exchanger (23). The medium is configured so that the medium reversibly circulates in a phase change. The heat storage circuit (40) includes a heat storage tank (41) and a heat storage heat exchanger (4).
2) and a take-out heat exchanger (43) are sequentially connected to form a dynamic heat storage circuit, and the heat-storage heat exchanger (42) and the take-out heat exchanger (43) A heat storage auxiliary heat exchanger (47), which is connected to the secondary circuit (30) so as to exchange heat between the side heat medium and the heat storage medium, and exchanges heat with the heat storage medium and the secondary heat medium; And an auxiliary passage (4e) through which an auxiliary heat exchanger (12) for exchanging heat between the high-temperature primary-side heat medium and the secondary-side heat medium is connected to circulate the secondary-side heat medium. In the cold storage operation, the secondary heat medium circulates between the main heat exchanger (11) and the heat storage heat exchanger (42), and the secondary heat medium stores heat in the main heat exchanger (11). Heat storage operation is performed by circulating between the heat exchanger (42) and the heat storage operation.
A first cooling operation using heat storage circulating between 3) and the use-side heat exchanger (33), and a secondary heat medium is taken out from the heat exchanger (43) for extraction and the use-side heat exchanger (33). At the same time, the secondary heat medium circulates between the main heat exchanger (11) and the use side heat exchanger (33), the second heat storage utilizing cooling operation, and the heat storage auxiliary heat exchanger ( The main heat exchanger (11) where the primary heat medium condenses while the secondary heat medium circulates between the auxiliary heat exchanger (12) where the primary heat medium evaporates and the use side A first heat storage utilizing heating operation in which the secondary heat medium circulates between the heat exchanger (33) and the auxiliary heat exchanger (12) in which the heat storage auxiliary heat exchanger (47) and the primary heat medium evaporate; ), The secondary heat medium circulates between the main heat exchanger (11) where the primary heat medium condenses and the use side heat exchanger (33). At the same time, the secondary heat medium is the main heat A second heat storage use heating operation circulating between the heat exchanger (11) and the use side heat exchanger (33) is performed. In the normal operation, the secondary heat medium is used with the main heat exchanger (11). A regenerative air conditioner characterized by performing a normal cooling operation and a normal heating operation by circulating between the side heat exchanger (33). 19. The regenerative air conditioner according to claim 1, wherein the secondary circuit (30) includes a plurality of use side heat exchangers (33) connected in parallel with each other, and a plurality of the use side heat exchangers (33). A main heat exchanger (11) is connected in parallel with each other, and a primary circuit (20) is connected to each main heat exchanger (11), while a plurality of heat storage circuits (40) are connected to a secondary circuit ( 30) A regenerative air conditioner characterized by being connected in parallel with each other. 20. The regenerative air conditioner according to claim 1, wherein the primary circuit (20) circulates a primary heat medium serving as a cold heat source and a hot heat source through the main heat exchanger (11). The heat storage circuit (40) is connected to the secondary side circuit (30) and the heat storage heat exchanger (42) through which the secondary side heat medium flows is used as the heat storage tank (41).
The heat storage heat exchanger (42) is configured as a static heat storage circuit that stores heat in the heat storage medium and takes out the heat storage, and the heat storage tank (41) includes the heat storage medium While a heat storage heat exchanger (43) connected to the secondary circuit (30) is connected so as to exchange heat with the secondary heat medium, the secondary heat medium is mainly used for the thermal storage operation. A cold storage operation and a warm storage operation are performed by circulating between the heat exchanger (11) and the heat storage heat exchanger (42). Four
Use of heat storage that circulates between 3) and the use side heat exchanger (33) and at the same time the secondary side heat medium circulates between the heat storage heat exchanger (42) and the use side heat exchanger (33) In the cooling operation, the secondary-side heat medium circulates between the take-out heat exchanger (43) and the use-side heat exchanger (33), or the secondary-side heat medium is used as the heat storage heat exchanger (42). At least a heating operation utilizing heat storage circulating between the heat exchanger and the use side heat exchanger (33) is performed. In the normal operation, the secondary heat medium is composed of the main heat exchanger (11) and the use side heat exchanger (33). And performing a normal cooling operation and a normal heating operation by circulating between the air conditioners. 21. The regenerative air conditioner according to claim 1, wherein the primary circuit (20) circulates a primary heat medium serving as a cold heat source and a hot heat source through the main heat exchanger (11). The heat storage circuit (40) is connected to the secondary side circuit (30) and the heat storage heat exchanger (42) through which the secondary side heat medium flows is used as the heat storage tank (41).
The heat storage heat exchanger (42) is configured as a static heat storage circuit that stores heat in the heat storage medium and takes out the heat storage, and the heat storage tank (41) includes the heat storage medium A heat storage heat exchanger (43) connected to the secondary circuit (30) is connected so as to exchange heat with the secondary heat medium, while the heat storage and heat exchange of the thermal storage tank (41) are performed. An auxiliary circuit (50) in which an auxiliary refrigerant circulates between the auxiliary heat source heat exchanger (53) that performs heat exchange and the auxiliary use heat exchanger (52) that exchanges heat with the secondary-side heat medium is provided. The secondary heat medium circulates between the main heat exchanger (11) and the heat storage heat exchanger (42) to perform a cold heat storage operation and a warm heat storage operation. Is a heat exchanger for removal (4
Use of heat storage that circulates between 3) and the use side heat exchanger (33) and at the same time the secondary side heat medium circulates between the heat storage heat exchanger (42) and the use side heat exchanger (33) In the cooling operation, the auxiliary refrigerant is condensed in the auxiliary heat exchanger (52) and evaporated in the auxiliary heat source heat exchanger (53).
The secondary heat medium is circulated through the auxiliary heat exchanger (5).
At least a heating operation utilizing heat storage that circulates between 2) and the use-side heat exchanger (33) is performed. In the normal operation, the secondary-side heat medium includes the main heat exchanger (11) and the use-side heat exchanger ( 33) for performing a normal cooling operation and a normal heating operation. 22. The regenerative air conditioner according to claim 1, wherein the primary circuit (20) has a reversible primary heat medium between the main heat exchanger (11) and the heat source heat exchanger. The heat storage circuit (40) is connected to the secondary circuit (30), and the heat storage heat exchanger (42) through which the secondary heat medium flows is connected to the heat storage tank (41). )
The heat storage heat exchanger (42) is configured as a static heat storage circuit that stores heat in the heat storage medium and takes out the heat storage, and the heat storage tank (41) includes the heat storage medium The heat exchanger (43) for extracting heat stored connected to the secondary circuit (30) is connected so that the secondary heat medium exchanges heat with the primary heat medium that evaporates and the secondary heat medium. An auxiliary passage (4e) including an auxiliary heat exchanger (12) through which the secondary-side heat medium circulates so as to exchange heat with the heat medium is provided. The heat storage operation is performed by circulating between the heat exchanger (11) and the heat storage heat exchanger (42).
Use of heat storage that circulates between 3) and the use side heat exchanger (33) and at the same time the secondary side heat medium circulates between the heat storage heat exchanger (42) and the use side heat exchanger (33) In the cooling operation, the primary heat medium condenses while the secondary heat medium circulates between the auxiliary heat exchanger (12) and the removal heat exchanger (43) in which the primary heat medium evaporates. At least a heating operation using heat storage in which the secondary heat medium circulates between the main heat exchanger (11) and the use side heat exchanger (33) is performed. A regenerative air conditioner characterized by performing normal cooling operation and normal heating operation by circulating between a heat exchanger (11) and a use side heat exchanger (33). 23. The regenerative air conditioner according to claim 1, wherein the conveying means (31) includes a tank (T) for storing a secondary-side heat medium.
1, T2), a high-pressure generator (71) for heating the secondary heat medium to generate a high pressure, and a low-pressure generator (72) for cooling the secondary heat medium to generate a low pressure, The above tanks (T1, T2)
And the high pressure generating part (71) in communication with the tank (T1, T2)
While the secondary side heat medium is extruded from the tank (T1, T1
2) and the low-pressure generating section (72) by communicating with the tanks (T1, T1).
The regenerative air conditioner according to 2), wherein the secondary heat medium is recovered and the secondary heat medium is circulated. 24. The method of claim 5, 8, 9, 13, 14, 16.
22. The regenerative air conditioner according to any one of claims 21 and 21, wherein the transporting means (31) includes a tank (T) for storing the secondary-side heat medium.
1, T2) and a heating heat exchanger (7
1) and a cooling heat exchanger (72) for cooling the secondary heat medium, and the high-pressure secondary heat medium generated in the heating heat exchanger (71) is stored in tanks (T1, T2). To the tank (T
1, T2), while the secondary heat medium is extruded from the cooling heat exchanger (72), and the low-pressure secondary heat medium generated in the cooling heat exchanger (72) is discharged into the tank (T
1, T2) to recover the secondary heat medium in the tank (T1, T2) and circulate the secondary heat medium. The compressor (81) and the heat exchanger for heating ( 71) and expansion mechanism (EV)
And the cooling heat exchanger (72) are connected in order so that the driving refrigerant circulates, and the driving refrigerant condenses in the heating heat exchanger (71) to heat the secondary-side heat medium. On the other hand, a drive circuit (80) for cooling the secondary heat medium by evaporating the drive refrigerant in the cooling heat exchanger (72) is provided, and the auxiliary circuit (50) is used for heating in the drive circuit (80). The drive circuit (80) is connected in parallel to the heat exchanger (71), the expansion mechanism (EV), and the cooling heat exchanger (72), and the driving refrigerant also serves as an auxiliary refrigerant. Heat storage type air conditioner. 25. The regenerative air conditioner according to claim 23, wherein the high-pressure generating section (71) and the low-pressure generating section (72) of the conveying means (31).
Consists of a heat exchanger for heating (71) and a heat exchanger for cooling (72), while a compressor (81), a heat exchanger for heating (71) and an expansion mechanism (EV)
And the cooling heat exchanger (72) are connected in order so that the driving refrigerant circulates, and the driving refrigerant is connected to the heating heat exchanger.
A drive circuit (80) is provided for condensing in (71) and heating the secondary heat medium, while evaporating the drive refrigerant in the cooling heat exchanger (72) to cool the secondary heat medium. A regenerative air conditioner, characterized in that: 26. The regenerative air conditioner according to claim 24, wherein the heat balance of the heating heat exchanger (71) and the cooling heat exchanger (72) is balanced in the drive circuit (80). A heat storage type air conditioner characterized by comprising a radiating heat exchanger (79).