JPH1026377A - Heat storage type air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To carry out a cold heat storage, a heat storage and an air conditioning operation using the heat storage without replacing a heat storage tank even when one of cold heat storage heat exchangers cannot be used in operation. SOLUTION: A heat storage type air conditioner at least comprises a heat storage tank 9 which stores a heat storage medium 21, a first cold heat storage heat exchanger 10a disposed in the heat storage medium 21, a second cold heat storage medium heat exchanger 10b disposed in the heat storage heat exchanger 10b and connected with the first heat storage heat exchanger 10a in parallel, a second valve 26a mounted on one outlet of the first cold heat storage heat exchanger 10a, a fourth valve 27a mounted on the other outlet of the first cold heat storage heat exchanger 10a, a third valve 26b mounted on one outlet of the second cold heat storage heat exchanger 10b, a fifth valve 27b mounted on the other outlet of the second cold heat storage heat exchanger 10b, and third connecting pipes 136, 137 which include a sixth valve 23.

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 relating to suppression of daytime electric power and leveling measures.

[0002]

2. Description of the Related Art FIG. 17 shows a conventional heat storage type air conditioner disclosed in Japanese Patent Application No. 5-30727. That is, in FIG. 17, 1 is a compressor of, for example, 5 horsepower, 2 is a four-way switching valve for the compressor, and each is connected by the refrigerant circuit 101. Reference numeral 3 denotes an outdoor heat exchanger that functions as a condenser during cooling and as an evaporator during heating, and includes a four-way switching valve 2 for a compressor and a refrigerant circuit 10.
They are connected at 2.

[0003] Reference numeral 6 denotes a first expansion device connected to the outdoor heat exchanger 3 by a refrigerant circuit 103, and 7 and 8 denote valves, respectively, and refrigerant circuits 109 and 110 branched from the refrigerant circuit 108. Are connected to the first aperture device 6 via the respective apertures. Reference numeral 9 denotes a heat storage tank, in which a number of heat transfer tubes are vertically arranged and connected to form a heat exchanger 1 for cold storage heat.
0, the heat storage medium 21 (for example, water) stored in the tank
Can be frozen during cooling and hot water can be stored during heating.

[0004] The valve 8 is a heat exchanger 1 for cold storage heat in a heat storage tank 9.
0 and a refrigerant circuit 111. Reference numeral 12 denotes a refrigerant pump for transporting a gaseous refrigerant. The pump capacity is selected so that the same circulation amount as the refrigerant circulation amount by the operation of the compressor 1 can be obtained under predetermined operating conditions. Reference numeral 11 denotes a refrigerant pump four-way switching valve connected to the refrigerant pump 12 by a refrigerant circuit 114. 13 is an accumulator for a refrigerant pump, 14
Is a valve, which branches the refrigerant circuit 112 from the heat storage tank 9 to form refrigerant circuits 113 and 118, which are connected to the refrigerant pump four-way switching valve 11 and the valve 14, respectively.

The refrigerant pump four-way switching valve 11 and the refrigerant pump accumulator 13 are connected by a refrigerant circuit 116, and the refrigerant pump accumulator 13 is connected to the refrigerant circuit 1
At 15 is connected to the refrigerant pump 12. 117 is a refrigerant circuit connected to the refrigerant pump four-way switching valve 11 and the refrigerant circuit 120; 119 is a refrigerant circuit connected to the valve 14 and the refrigerant circuit 125; 20 is a valve connecting the refrigerant circuits 120 and 125; The other end of the circuit 125 is connected to the compressor four-way switching valve 2 described above.

Reference numeral 121 denotes a refrigerant circuit connected to the valve 7 and has a plurality of indoor unit refrigerant circuit systems a, b, and c between the circuit and the refrigerant circuit 120.
Refrigerant circuit 122, second expansion device 15, refrigerant circuit 12
3. The indoor heat exchanger 16 and the refrigerant circuit 124 are sequentially connected.

[0007] The refrigerant circuits 126 and 127 are connected between the compressor four-way switching valve 2 and the compressor accumulator 17 and between the compressor accumulator 17 and the compressor 1, respectively.

Next, the operation will be described with reference to FIGS. FIG. 18 shows a cold storage operation, for example, an ice making operation at night. In the figure, the valves 7, 20 are closed,
The valves 8 and 14 are opened, and the compressor 1 is operated. At this time, the refrigerant discharged from the compressor 1 is condensed in the outdoor heat exchanger 3, adiabatically expanded in the first expansion device 6, evaporates in the cold storage heat exchanger 10, and is discharged from the heat storage medium 21 (for example, water). The heat is applied to freeze the surface of the cold storage heat exchanger 10 and the vaporized refrigerant returns to the compressor 1 via the accumulator 17.

FIG. 19 is a Mollier diagram showing the operation state during the cold storage operation. The operating points represented by numbers in the figure are:
The state of the refrigerant in the refrigerant circuit represented by the same numeral in the figure is shown, where the condensation temperature is about 40 ° C. and the evaporation temperature is about −3 ° C. In this operation, the present system starts ice making at 22:00 and ends ice making at 8:00 the next morning, for example, on the assumption that there is no remaining water in the tank.

The cooling operation in the daytime will be described below. FIG.
0 indicates the cooling operation when the cooling operation is performed only by the compressor 1 without using the cold storage heat. In the figure, the compressor 1 is operated with the valves 7, 20 opened and the valves 8, 14 closed. The high-pressure refrigerant condensed and liquefied by the same operation as in FIG. 18 is sent to each indoor unit refrigerant circuit system a, b, c, and the second
The pressure is reduced while adjusting the flow rate of the refrigerant with the throttle device 15 of about 6 kg.
At a pressure of about / cm ² G, it flows into the indoor heat exchanger 16 and evaporates. At this time, the refrigerant that has absorbed heat from the surrounding room air and gasified returns to the compressor 1 via the compressor accumulator 17. At this time, the operating capacity of the compressor 1 is determined by the total operating capacity of the indoor units.

FIG. 21 is a Mollier diagram showing the operation state during the general cooling operation. The numbers in the figure are as described in FIG. 19, the condensation temperature is about 45 ° C., and the evaporation temperature is about 10 ° C.
It is. In this operation, the present system performs, for example, cooling after consuming cold storage heat.

FIG. 22 shows cooling using only cold storage heat, that is, cooling operation. In the figure, the first throttle device 6, valves 14 and 20 are closed, valves 7 and 8 are opened, and the refrigerant pump 12 is operated. At this time, the gas refrigerant sent out by the refrigerant pump 12 is cooled by ice in the heat storage tank 9 and is cooled by 20 to 2
Approximately 9 kg / cm ² G of refrigerant condensed and liquefied at 5 ° C. is sent to each indoor unit refrigerant circuit system a, b, c, and cooled as in FIG. At this time, since the refrigerant circulation amount of the refrigerant pump 12 is equal to the refrigerant circulation amount by the compressor 1 in FIG. 20, the same amount and the same amount of refrigerant flows through the indoor heat exchanger 16, and the power Is about 3 kg / cm ² G
Despite the small capacity, the cooling capacity is equivalent to the general cooling operation in FIG. The operating capacity of the refrigerant pump 12 at this time is determined by the sum of the operating capacity of the indoor units.

FIG. 23 is a Mollier diagram showing the operation state during the cooling operation. The numbers in the figure are as described in FIG. 19, and the condensation temperature is about 23 ° C. and the evaporation temperature is about 10 ° C. In this operation, the system performs, for example, cooling at a light load.

FIG. 24 shows a regenerative cooling combined cooling operation in which the general cooling operation of FIG. 20 and the cooling operation of FIG. 22 are simultaneously operated. In the figure, the valve 14 is closed and the valves 7, 8, 2
Opening 0, the compressor 1 and the refrigerant pump 12 are operated. At this time, the heat exchanger 10 for cold storage heat on the refrigerant pump 12 side
The liquid refrigerant condensed in the step S1 joins the refrigerant decompressed by the first expansion device 6 on the compressor 1 side before the valve 7, and flows to the indoor unit refrigerant circuit systems a, b, c in FIG. Approximately twice the amount of the refrigerant circulates during the cooling operation or the cooling operation in FIG. 22, and the capacity is also doubled. At this time, the opening degree of the first expansion device 6 is constant, and the pressure at the junction is 8 to 10 kg.
/ Cm ² G. The operating capacity at this time is determined by controlling the capacity of the compressor 1 with the refrigerant pump 12 being set to 100% output, and the rate of the capacity control is determined by the total operating capacity of the indoor units.

FIG. 25 is a Mollier diagram showing an operation state during the cooling operation combined with cold storage heat. The numbers in the figure are those in FIG.
It is as described in. The evaporation temperature is about 10 ° C. as in other cooling operations, but the condensation temperature is about 45 ° C. in the outdoor heat exchanger 3 and about 20 to 25 ° C. in the cold storage heat exchanger 10. In this operation, the system performs cooling under normal cooling load.

Although the operation relating to the cooling has been described above, the operation relating to the heating will be described below. Therefore, unless otherwise specified, the four-way switching valve 2 for the compressor and the four-way switching valve 11 for the refrigerant pump are set to the heating mode. I have. FIG.
3 shows, for example, a nighttime heat storage operation, that is, a hot water storage operation. In the figure, the valves 7 and 20 are closed, the valves 8 and 14 are opened, and the compressor 1 is operated. At this time, the high-temperature gas refrigerant discharged from the compressor 1 flows in the direction of the arrow in the drawing, condenses in the heat storage heat exchanger 10 in the heat storage tank 9, and raises the temperature of the water 21. The condensed refrigerant adiabatically expands in the first expansion device 6, absorbs heat from outside air in the outdoor heat exchanger 3, evaporates, and the vaporized refrigerant returns to the compressor 1 via the accumulator 17.

FIG. 27 is a Mollier diagram showing the operation state during the heat storage operation. The numbers in the figure are as described in FIG. 19. The boiling temperature of the tank water temperature is about 50 ° C., the condensation temperature at this time is about 55 ° C., and the evaporation temperature is about 0 ° C. In this operation, the system stores hot water during the nighttime power period and ends the operation as soon as the temperature reaches a predetermined tank water temperature.

The daytime heating operation will be described below. FIG.
Reference numeral 8 denotes a general heating operation when the heating operation is performed only by the compressor 1 without using the heat storage. In the figure, valves 7, 20
Is opened, the valves 8 and 14 are closed, and the compressor 1 is operated. The high-temperature and high-pressure gas discharged from the compressor 1 at a pressure of about 17 kg / cm ² G is supplied to the refrigerant circuit systems a, b, and
c, and is condensed in each indoor heat exchanger 16 to heat the indoor air. The condensed liquid refrigerant is supplied to the second expansion device 15
Then, the pressure in the outdoor heat exchanger 3 is reduced at a pressure of about 4 kg / cm ² G by the first expansion device 6 and then reduced to the compressor 1 by the same operation as in FIG. Return. At this time, the operating capacity of the compressor 1 is determined by the total operating capacity of the indoor units.

FIG. 29 shows a Mollier diagram showing the operating state during this general heating operation. The numbers in the figure are as described in FIG. 19, and the condensation temperature is about 42 to 43 ° C. and the evaporation temperature is about 0 ° C. In this operation, the present system performs heating during the day under light load after heat storage consumption.

FIG. 30 shows heating using only heat storage, that is, heat dissipation operation. In the figure, the first expansion device 6 and the valves 14, 20 are closed, and the valves 7, 8 are opened to operate the refrigerant pump 12. At this time, the refrigerant pump 12 sucks the gas refrigerant heated and vaporized at the evaporation pressure of about 13 kg / cm ² G in the tank via the refrigerant pump accumulator 13. Therefore, a high-temperature and high-pressure gas refrigerant of about 17 kg / cm ² G at a pressure increase of about 4 kg / cm ² G is sent to each indoor unit refrigerant circuit system a, b, c. Heat the air. The condensed refrigerant is supplied to the second expansion device 1
The pressure is reduced at 5, and the refrigerant returns to the heat storage tank 9 as a gas-liquid two-phase refrigerant of about 13 kg / cm ² G. The operating capacity of the refrigerant pump 12 at this time is determined by the sum of the operating capacity of the indoor units.

FIG. 31 is a Mollier diagram showing the operation state during the heat dissipation operation. The numbers in the figure are as described in FIG. 19, the condensation temperature is about 42 to 43 ° C., and the evaporation temperature is 35 ° C.
Before and after. In this operation, the system performs heating at a light load, for example.

FIG. 32 shows the general heating operation of FIG. 28 and FIG.
2 shows a heat storage combined heating operation in which the heat dissipation operation is simultaneously performed. In the figure, the valve 14 is closed and the valves 7, 8, 2
0 is opened and the compressor 1 and the refrigerant pump 12 are operated. At this time, the gas refrigerant discharged from the refrigerant pump 12 merges with the gas refrigerant discharged from the compressor 1 on the outlet side of the valve 20, and enters the indoor unit refrigerant circuit systems a, b, and c during the general heating operation shown in FIG. Alternatively, a high-temperature, high-pressure refrigerant having a pressure of about 17 kg / cm ² G, which is about twice the amount of the heat radiation operation in FIG. 30, is circulated, and the capacity is also about twice. The pressure is reduced by about 1
About 1/2 kg of the refrigerant of about 3 kg / cm ² G flows into the cold storage heat exchanger 10 to perform the same operation as the heat dissipation operation of FIG. 30, and the other half of the refrigerant is the first refrigerant. The pressure is further reduced by the expansion device 6 to a pressure of about 4 kg / cm ² G and flows into the outdoor heat exchanger 3 to perform the same operation as the general heating operation in FIG. At this time, the operating capacity of the refrigerant pump 12 is 100
% Output is determined by controlling the capacity of the compressor 1, and the rate of the capacity control is determined by the total operating capacity of the indoor units.

FIG. 33 is a Mollier diagram showing the operating state during the heating operation with the heat storage. The numbers in the figure are as described in FIG. Condensing temperature is 4 as in other heating operations
The evaporation temperature is about 35 ° C. in the heat storage heat exchanger 10 and about 0 ° C. in the outdoor heat exchanger 3. In this operation, the system performs heating when the heating load is concentrated, for example, at the time of rising in the morning.

[0024]

In the conventional regenerative air-conditioning apparatus that performs each of the above-mentioned operations, if one of the heat exchangers for regenerative heat or the regenerator cannot be used, the regenerative air conditioner cannot be used. Unless the tank was replaced, it was not possible to perform cold storage, heat storage, and air conditioning operation using heat storage.

In addition, during heat radiation heating, high-efficiency heat storage heating can be performed immediately after performing nighttime heat storage, but once the heat storage is used, the temperature of the heat storage medium in the heat storage tank decreases. In the case where air conditioning using heat storage is performed again before the next heat storage operation, only heat storage using heating which is relatively inefficient due to the lowered water temperature can be performed.

The amount of cold storage used per unit time used during cooling is always the same amount. To further increase the power consumption night shift rate during peak power consumption, the amount of cold storage used per unit time used during cooling can be reduced. The amount of cold storage, that is, the heat transfer area of the heat exchanger for cold storage heat could not be increased.

Further, during the low outdoor air operation of the heat storage operation, a large amount of refrigerant is distributed in the units and pipes of the indoor unit that are not used. Therefore, the amount of the refrigerant in the refrigerant circuit used is insufficient, and the operation state is insufficient.

When the heat storage tank is formed as an integral unit, the installation space is concentrated in one place, so that when the installation space is narrow and dispersed, the installation space for the heat storage tank can be secured. It was severely restricted by the installation of the heat storage tank.

[0029]

In order to solve the various problems described above, a regenerative air conditioner according to the present invention comprises a compressor, a four-way switching valve, an outdoor heat exchanger, a first throttle device, A circuit for general cooling and heating, in which the second expansion device and the indoor heat exchanger are sequentially connected by pipes, and a circuit between the first expansion device and the second expansion device of the general air conditioning circuit and from the indoor heat exchanger. The compressor and the compressor are connected via a third expansion device, a first heat exchanger for cold storage heat, and a first valve, and are connected with the compressor, the outdoor heat exchanger, and the first expansion device to cool and store the heat. A first connection pipe that constitutes a heat storage circuit, a section between the four-way switching valve of the general cooling and heating circuit and the suction side of the compressor, and a first heat exchanger for cold storage heat from the first valve of the first connection pipe. And a third heat exchanger for cold storage heat, a third expansion device, A second connecting pipe constituting a cooling / radiating circuit together with the expansion device and the indoor side heat exchanger, and a heat storage device in which the first cold storage heat exchanger is disposed in a heat storage medium stored in the tank. A regenerative air conditioner comprising a tank and one or more second regenerative heat exchangers arranged in a heat storage medium and constituting a part of a cooling / radiating circuit; A second valve connected to the first connection pipe in parallel with the first heat exchanger, and a second valve provided on one outlet side of the first cold storage heat exchanger of the first connection pipe;
A third valve provided on one outlet side of the second regenerative heat exchanger of the first connection pipe, and the other outlet side of the first regenerative heat exchanger on the first connection pipe; And a fifth valve provided on the other outlet side of the second regenerative heat exchanger of the first connection pipe and a four-way switching valve of the general cooling / heating circuit. A third valve connecting the suction side of the heat exchanger and the pipe connection positions of the first and second cold storage heat exchangers from the first valve of the first connection pipe via a sixth valve. And a connection pipe.

A general cooling / heating circuit comprising a compressor, a four-way switching valve, an outdoor heat exchanger, a first expansion device, a second expansion device, and an indoor heat exchanger connected in series with a pipe. A third expansion device, a first regenerator heat exchanger, and a first expansion device are connected between the first expansion device and the second expansion device and between the indoor heat exchanger and the compressor in the cooling and heating circuit. A first connection pipe which is connected via a valve to form a cool storage / heat storage circuit together with the compressor, the outdoor heat exchanger, and the first expansion device; and a compressor suction from a four-way switching valve of a general cooling / heating circuit. The first cold storage heat exchanger and the third expansion device are connected via a refrigerant pump between the first side and the first connection pipe between the first valve and the first cold storage heat exchanger. , A second diaphragm device,
Heat storage comprising a second connection pipe forming a cooling / radiating circuit together with the indoor heat exchanger, and a heat storage tank in which a first heat storage heat exchanger is disposed in a heat storage medium stored in the tank. In the air conditioner of the type, one or a plurality of second heat exchangers for cold storage heat which are arranged in the heat storage medium and constitute a part of a circuit for cooling / radiating heat are referred to as a first heat exchanger for cold storage heat. Connected in parallel to the first connection pipe, the heat storage tank is divided into a plurality of heat storage chambers, and the first or second heat exchanger for cold storage heat is arranged in each of the heat storage chambers. A second pipe provided on one outlet side of the first regenerative heat exchanger of the connection pipe
, A third valve provided on one outlet side of the second regenerative heat exchanger of the first connection pipe, and between the four-way switching valve of the general cooling and heating circuit and the suction side of the compressor. A third connection pipe connecting a first valve of the first connection pipe and a pipe connection position of the first and second heat exchangers for cold storage heat via a sixth valve; When performing the heat-storage-based heating operation using the heat-dissipating circuit, the second valve and the third valve are switched between open and closed and the heat storage medium is switched by either the first or second cold-storage heat exchanger. And a heat storage using heat exchanger managing means that uses heat storage.

And a general cooling and heating circuit in which a compressor, a four-way switching valve, an outdoor heat exchanger, a first expansion device, a second expansion device, and an indoor heat exchanger are sequentially connected by piping.
A third expansion device, a first regenerative heat exchanger, and a first expansion device between the first expansion device and the second expansion device and between the indoor heat exchanger and the compressor in the general cooling and heating circuit. A first connection pipe which is connected through a valve of the first embodiment to form a circuit for storing and storing heat with the compressor, the outdoor heat exchanger, and the first expansion device, and a four-way switching valve of a general cooling and heating circuit is connected to the compressor. A first cold storage heat exchanger and a third throttle are connected through a refrigerant pump between the suction side and the first cold storage heat exchanger from the first valve of the first connection pipe. Device, second diaphragm device,
Heat storage comprising a second connection pipe forming a cooling / radiating circuit together with the indoor heat exchanger, and a heat storage tank in which a first heat storage heat exchanger is disposed in a heat storage medium stored in the tank. In the air conditioner of the type, one or a plurality of second heat exchangers for cold storage heat which are arranged in the heat storage medium and constitute a part of a circuit for cooling / radiating heat are referred to as a first heat exchanger for cold storage heat. Connected in parallel to the first connection pipe, the heat storage tank is divided into a plurality of heat storage chambers, and the first or second heat exchanger for cold storage heat is arranged in each of the heat storage chambers. A second pipe provided on one outlet side of the first regenerative heat exchanger of the connection pipe
, A third valve provided on one outlet side of the second regenerative heat exchanger of the first connection pipe, and between the four-way switching valve of the general cooling and heating circuit and the suction side of the compressor. A third connection pipe connecting a first valve of the first connection pipe and a pipe connection position of the first and second heat exchangers for cold storage heat via a sixth valve; When performing the cooling operation utilizing the cooling heat using the circuit for radiating heat, the opening and closing of the second valve and the third valve are switched, and the heat storage medium is switched by one or both of the first and second heat exchangers for cold storage heat. And a means for managing a heat exchanger using cold heat.

Further, a general cooling and heating circuit in which a compressor, a four-way switching valve, an outdoor heat exchanger, a first expansion device, a second expansion device, and an indoor heat exchanger are sequentially connected by piping, A third expansion device, a first regenerator heat exchanger, and a first expansion device are connected between the first expansion device and the second expansion device and between the indoor heat exchanger and the compressor in the cooling and heating circuit. A first connection pipe which is connected via a valve to form a cool storage / heat storage circuit together with the compressor, the outdoor heat exchanger, and the first expansion device; and a compressor suction from a four-way switching valve of a general cooling / heating circuit. The first cold storage heat exchanger and the third expansion device are connected via a refrigerant pump between the first side and the first connection pipe between the first valve and the first cold storage heat exchanger. , A second diaphragm device,
Heat storage comprising a second connection pipe forming a cooling / radiating circuit together with the indoor heat exchanger, and a heat storage tank in which a first heat storage heat exchanger is disposed in a heat storage medium stored in the tank. In the air conditioner of the type, one or a plurality of second heat exchangers for cold storage heat which are arranged in the heat storage medium and constitute a part of a circuit for cooling / radiating heat are referred to as a first heat exchanger for cold storage heat. A second valve provided on one outlet side of the first regenerative heat exchanger of the first connection pipe while being connected to the first connection pipe in parallel, and a second valve of the first connection pipe. A third valve provided on one outlet side of the heat exchanger for cold storage heat of No. 2 and a first valve of the first connection pipe between the four-way switching valve of the general cooling and heating circuit and the suction side of the compressor; And a third connection for connecting through a sixth valve between the pipe connection positions of the first and second regenerative heat exchangers. Prior to performing a heat storage operation using a circuit for cooling and storing heat, a refrigerant amount adjusting means in a refrigeration cycle for performing the cold storage operation for a predetermined time and discharging the refrigerant from the first or second heat exchanger for cold storage heat; It is provided with.

A general cooling / heating circuit comprising a compressor, a four-way switching valve, an outdoor heat exchanger, a first expansion device, a second expansion device, and an indoor heat exchanger connected in series with a pipe, A third expansion device, a first regenerator heat exchanger, and a first expansion device are connected between the first expansion device and the second expansion device and between the indoor heat exchanger and the compressor in the cooling and heating circuit. A first connection pipe which is connected via a valve to form a cool storage / heat storage circuit together with the compressor, the outdoor heat exchanger, and the first expansion device; and a compressor suction from a four-way switching valve of a general cooling / heating circuit. The first cold storage heat exchanger and the third expansion device are connected via a refrigerant pump between the first side and the first connection pipe between the first valve and the first cold storage heat exchanger. , A second diaphragm device,
Heat storage comprising a second connection pipe forming a cooling / radiating circuit together with the indoor heat exchanger, and a heat storage tank in which a first heat storage heat exchanger is disposed in a heat storage medium stored in the tank. In the air conditioner of the type, one or a plurality of second heat exchangers for cold storage heat which are arranged in the heat storage medium and constitute a part of a circuit for cooling / radiating heat are referred to as a first heat exchanger for cold storage heat. Connected in parallel to the first connection pipe, separately configured heat storage tanks as a plurality of divided heat storage tanks, and provided with a first or second cold storage heat exchanger in each divided heat storage tank It is.

[0034]

Embodiments of the present invention will be described with reference to the drawings. Embodiment 1 FIG. Hereinafter, a regenerative air conditioner according to Embodiment 1 of the present invention will be described with reference to the drawings. FIG. 1 shows a system of a regenerative air conditioner. In this figure, the same components as those in FIG. 17 in the conventional example are denoted by the same reference numerals, and the description thereof will be omitted. In this regenerative air conditioner, as shown in FIG. 1, the compressor 1, the four-way switching valve 28, the outdoor heat exchanger 3, the first throttle device 6, the second
Of the expansion pipes 15a, 15b, 15c and the indoor heat exchangers 16a, 16b, 16c
04b, 103, 108, 121, 122a, 122
b, 122c, 123a, 123b, 123c, 124
a, 124b, 124c, 120, 128a, 128
b, 139 and 129 are sequentially connected to form a general cooling / heating circuit. Further, the first expansion device 6 to the second expansion device 15a, 15b, 15c of the general cooling and heating circuit are used.
Between the refrigerant pipes 108 and 121 and the indoor heat exchanger 16
a, the refrigerant pipe 12 between the compressor 1 and 16b, 16c
0, 128a via a third expansion device 22, a first heat exchanger for cold storage heat 10a, and a first valve 14, first connection pipes 105, 112, 118, 119.
Is provided. The first connection pipes 105 and 11
Reference numerals 2, 118, and 119 together with the compressor 1, the outdoor heat exchanger 3, and the first expansion device 6 constitute a cool storage / heat storage circuit. Also, a first connection between the refrigerant pipes 129 and 139 between the four-way switching valve 28 and the suction side of the compressor 1 in the general cooling and heating circuit and the first valve 14 to the first heat exchanger 10a for cold storage heat. Second connection pipes 130, 133, 132, 131 for connecting the pipes 112, 118 via the refrigerant pump 12 and the seventh valve 24 are provided. The second connection pipes 130, 133, 132, 131 are connected to the first heat storage heat exchanger 10a, the third expansion device 22, the second expansion devices 15a, 15b, 15c, and the indoor heat exchanger 16a. , 16b and 16c constitute a cooling / radiating circuit.

A second heat exchanger for cold storage heat 10b which is arranged in the heat storage medium 21 and forms a part of a circuit for cooling and radiating heat is arranged in parallel with the first heat exchanger for cold storage heat 10a. To the first connection pipes 105 and 112. Further, the first cold storage heat exchanger 1 of the first connection pipe 112
0a, a second valve 26a provided on one side of the outlet,
Second heat exchanger 10b for cold storage heat of first connection pipe 112
A third valve 26b provided on one outlet side of the
A fourth valve 27a provided on the other outlet side of the first cold storage heat exchanger 10a of the connection pipe 105, and the other of the second cold storage heat exchanger 10b of the first connection pipe 105 And a refrigerant pipe 128b, 139 between the four-way switching valve 28 and the compressor 1 suction side of the general cooling and heating circuit and the first and second valves 14 and 139 from the first valve 14. Third connection pipes 136 and 137 for connecting the first connection pipe 112 between the heat exchangers for cold storage heat 10a and 10b via the sixth valve 23 are provided.

Therefore, in this regenerative air conditioner, even if the first regenerative heat exchanger 10a is broken,
By closing the second valve 26a and the fourth valve 27a, the second cool storage heat exchanger 10b can be used, and the operation using the heat storage tank 9 can be performed. Conversely, the second
When the heat exchanger 10b for cold storage heat is broken, by closing the third valve 26b and the fifth valve 27b, the heat exchanger 10a for cold storage heat can be used and the heat storage tank 9 can be used. Operation is possible.

Embodiment 2 Hereinafter, a regenerative air conditioner according to Embodiment 2 of the present invention will be described with reference to the drawings.
FIG. 2 shows a system of a regenerative air conditioner. In the figure, the same components as those in FIG. 1 of the first embodiment are denoted by the same reference numerals, and description thereof will be omitted. The difference from FIG. 1 is as follows. That is, the heat storage tank 9 is divided into two heat storage chambers 9a and 9b, and each of the heat storage chambers 9a and 9b is provided with the first heat exchanger 1 for cold storage heat.
0a or the second heat storage heat exchanger 10b for cooling and heat storage, and performing the heat storage utilizing heating operation using the cooling / radiating circuit based on the preset heating operation schedule. Valve 26a and third valve 2
The heat storage medium 2 is switched by switching the opening and closing of the heat storage medium 2b by either the first or second heat exchangers for cold storage heat 10a, 10b.
In other words, there is provided a heat-storage-use heat exchanger managing means 201 that uses the heat storage of No. 1.

Next, the operation of this embodiment, the basic flow of the refrigerant, and the operation state will be described. FIG. 2 is a circuit diagram of the heat radiation / heating operation when the heat storage chamber 9a of the present embodiment is used. In FIG. 2, the third throttle device 22, the second throttle devices 15a, 15b, 15c, the sixth valve 23, and the second valve 26a are open, and the other throttle devices and valves are closed. Compressor 1 and refrigerant pump 1
Drive 2 At this time, the compressor 1 sends a high-temperature and high-pressure gas refrigerant of about 17 kg / cm ² G to each indoor unit refrigerant circuit system a, b, c to heat the indoor air. The condensed refrigerant is decompressed by the second expansion device 15 to about 13 kg / cm ²
The refrigerant becomes the gas-liquid two-phase refrigerant of G, returns to the heat storage chamber 9a, evaporates, and returns to the compressor 1 at about 4 kg / cm ² G via the sixth valve 23.

On the other hand, FIG. 3 shows a circuit diagram of the heat radiation / heating operation when the heat storage chamber 9b of the present embodiment is used. In FIG. 3, the third aperture device 22, the second aperture devices 15a, 15
b, 15c, sixth valve 23, and third valve 2
The compressor 1 and the refrigerant pump 12 are operated while 6b is open and the other expansion devices and valves are closed.
At this time, the compressor 1 sends a high-temperature and high-pressure gas refrigerant of about 17 kg / cm ² G to each indoor unit refrigerant circuit system a, b, c to heat the indoor air. The condensed refrigerant is decompressed by the second expansion device 15, becomes a gas-liquid two-phase refrigerant of about 13 kg / cm ² G, returns to the heat storage chamber 9b and evaporates, passes through the sixth valve 23, and becomes about 4 kg / cm ^2. Return to compressor 1 at cm ² G.

Next, a circuit diagram of the general heating operation of the present embodiment is shown in FIG. In FIG. 4, the compressor 1 is operated with the first expansion device 6 and the second expansion devices 15a, 15b, 15c open and the other expansion devices and valves closed. The high-temperature and high-pressure gas discharged from the compressor 1 at a pressure of about 17 kg / cm ² G is sent to the indoor unit refrigerant circuit systems a, b, and c, and the indoor heat exchanger 16
a, 16b, and 16c condense and heat the room air. The condensed liquid refrigerant is supplied to the second expansion devices 15a, 15b, 15c.
Then, the pressure in the outdoor heat exchanger 3 is reduced at a pressure of about 4 kg / cm ² G to return to the compressor 1 with a pressure of about 4 kg / cm ² G.

Next, FIG. 5 shows a switching diagram of the heating time zone operation switching in the heating season according to the present embodiment. The horizontal axis in the figure is time, and the vertical axis is the heating capacity during the heating operation. The control of this operating state is shown in FIG. 6 of a control block diagram. According to the heat storage use heat exchanger management means 201, first, 8:00.
From the time of the heating time to the heat dissipation operation in which the heat storage chamber 9a is included in the refrigeration cycle (with the second valve 26a opened).
(S1, S2). At this point, the third heat storage chamber 9b
Is closed. At 8:00, the temperature of water as the heat storage medium 21 in the heat storage chambers 9a and 9b is 40 ° C. From 8:00 to 12:
The processing is performed up to 00 (S3). The second valve 26a is used between 12:00 and 16:00, which is assumed to consume the heat storage at night.
The operation of switching the third valve 26b to the general heating operation by closing the third valve 26b is performed simultaneously (S4, S5). At 16:00 (S6), the operation of opening the third valve 26b and starting the heat dissipation operation is performed simultaneously (S7). The heat dissipation operation including the heat storage chamber 9b in the refrigeration cycle is started (S8), and the heat release operation is performed at 20: 0
The heat dissipation operation is performed until 0. At this time, the water temperature of the heat storage chamber 9b is maintained at about 40 ° C., and is a water temperature at which the heat dissipation operation can be efficiently performed. Then, at 20:00 (S9), the operation of closing the third valve 26b and starting the general heating operation is performed simultaneously (S10). During the time period from 20:00 to 22:00, the general heating operation is performed, and the second valve 26a and the third valve 26b are closed.
At 22:00, the heating operation time period ends (S11),
The heat storage time zone is from 2:00 to 8:00 the next day.

Embodiment 3 Hereinafter, a heat storage type air conditioner according to Embodiment 3 of the present invention will be described with reference to the drawings.
FIG. 7 shows a system of a heat storage type air conditioner. In this figure, the same components as those in FIG. 2 in the second embodiment are denoted by the same reference numerals, and description thereof will be omitted. The difference from FIG. 2 is as follows. That is, when performing a cooling operation utilizing cooling heat using a cooling / radiating circuit,
The opening and closing of the second valve 26a and the third valve 26b are switched based on a preset cooling operation schedule, and the heat storage medium 21 is switched by either or both of the first and second heat storage heat exchangers 10a and 10b. Is provided with a cold-heat-using heat exchanger managing means 202 that uses the cold heat of the above.

Next, the operation of this embodiment, the basic flow of the refrigerant, and the operating state will be described. First, the heat storage room 9
FIG. 7 is a circuit diagram of a cooling operation combined with cold storage operation (one of the cooling operations) when a is used. In FIG. 7, the first throttle device 6, the third throttle device 22, the second throttle devices 15a, 15b, 15c, the seventh valve 24, and the second valve 26a are opened, and the other valves are closed. The compressor 1 and the refrigerant pump 12 are operated in a state where the compressor 1 is in the state. At this time, the liquid refrigerant condensed in the heat storage chamber 9a on the side of the refrigerant pump 12 merges with the refrigerant depressurized by the first expansion device 6 on the side of the compressor 1 and flows to the indoor unit refrigerant circuit systems a, b, c. In this case, the refrigerant circulates about twice as much as in the ordinary cooling operation, and the capacity is doubled. Then, the refrigerant returns to the compressor 1.

On the other hand, FIG. 8 shows a circuit diagram of the cooling operation combined with cold storage (one of the cooling operations) when the heat storage chamber 9b is used. In FIG. 8, the first aperture device 6, the third aperture device 22, the second aperture devices 15a, 15b, 15c,
Open the seventh valve 24 and the third valve 26b,
The compressor 1 and the refrigerant pump 12 are operated with other valves closed. At this time, the liquid refrigerant condensed in the heat storage chamber 9b on the side of the refrigerant pump 12 merges with the refrigerant decompressed by the first expansion device 6 on the side of the compressor 1, and flows to the indoor unit refrigerant circuit systems a, b, c. In this case, the refrigerant circulates about twice as much as in the ordinary cooling operation, and the capacity is doubled. And the refrigerant is the compressor 1
Return to

Next, a circuit diagram of the general cooling operation is shown in FIG. The first aperture device 6 and the second aperture devices 15a, 1
5b and 15c are open, and the other throttle devices and valves are closed. The high-pressure refrigerant condensed and liquefied in the outdoor heat exchanger 3 from the refrigerant discharged from the compressor 1 is sent to each of the indoor unit refrigerant circuit systems a, b, and c, and the second expansion device 15
a, 15b, and 15c, the pressure was reduced while controlling the flow rate of the refrigerant, and the indoor heat exchanger 16 was controlled at a pressure of about 6 kg / cm ² G.
a, 16b and 16c flow into and evaporate. At this time, the refrigerant that has absorbed heat from the surrounding room air and returned to the compressor 1 is gasified.

Next, FIG. 10 shows a switching state diagram of the cooling time zone operation in the cooling season according to the present embodiment. In the figure, the horizontal axis represents time, and the vertical axis represents cooling capacity during cooling operation. The control of the operating state is shown in FIG. 11 of the control block diagram. According to the cold heat use heat exchanger management means 202, first, 8: 0
The cooling operation time starts from 0, and the operation of closing the second valve 26a and the third valve 26b to start the general cooling operation is performed simultaneously (S21, S22). At 10:00 (S23), one heat storage chamber 9a is operated.
The second valve 26a is opened, and the operation of starting the cooling operation combined with the cold storage heat is simultaneously performed (the heat storage chamber 9a is preferentially used, S
24). Thermal storage room 9 from 10:00 to 14:00
a is used for the cooling operation combined with cold storage heat using only one unit (S2).
5) At 14:00 (S26), by opening the third valve 26b of the heat storage chamber 9b (S27), the first cold storage heat exchanger 10a and the second cold storage heat exchanger. 10b start cooling operation combined with regenerative heat (S2
8). The operation of the two heat storage chambers is performed at 14: 0, which consumes a large amount of power.
It is used from 0 to 16:00 to increase the nighttime power transfer rate at the time of summer power peak. At 16:00 (S
29), the second valve 26a is closed, and the operation of one heat storage chamber with only the heat storage chamber 9b is started (S30, S31), 16: 0
This operation is performed from 0 to 18:00. At 18:00 (S32), the operation of closing the third valve 26b and starting the general cooling operation is performed simultaneously (S33, S34).
After performing the general cooling operation from 18:00 to 22:00, the cooling time zone ends at 22:00 (S35, S3).
6) The operation shifts to the cold storage operation. In addition, this embodiment shows the same effect not only in cold storage cooling but also in heat storage heating.

Embodiment 4 Hereinafter, a regenerative air conditioner according to Embodiment 4 of the present invention will be described with reference to the drawings.
FIG. 12 shows a system of a regenerative air conditioner. In the figure, the same components as those in FIG. 1 of the first embodiment are denoted by the same reference numerals, and description thereof will be omitted. The difference from FIG. 1 is as follows. That is, the fourth valve 27a and the fifth valve 27b are provided on the connection side of the first regenerator heat exchanger 10a and the second regenerator heat exchanger 10b with the third expansion device 22. Prior to performing a heat storage operation using a cool storage / heat storage circuit based on a preset heating operation schedule,
It is provided with a refrigerant amount adjusting means 203 in the refrigeration cycle for performing the cold storage operation for a predetermined time and discharging the refrigerant from the first or second heat storage heat exchangers 10a and 10b.

Next, the operation of this embodiment, the basic flow of the refrigerant, and the operating state will be described. FIG. 12 shows a circuit diagram of the heat storage operation of the present embodiment. In FIG. 12, the first aperture device 6, the third aperture device 22, the first
, The second valve 26a, the third valve 26
b, and the fourth valve 27a is open, and the compressor 1 is operated in a state where the other expansion devices and valves are closed. At this time, the gas refrigerant delivered by the compressor 1 is cooled in the heat storage tank 9 and condensed at about 40 ° C., and the refrigerant squeezed by the third expansion device 22 and the first expansion device 6 is supplied to the outdoor unit refrigerant circuit. And flows into the outdoor heat exchanger 3 at a pressure of about 6 kg / cm ² G and evaporates. At this time, the gasified refrigerant that has absorbed heat from the surrounding outdoor air returns to the compressor 1.

Next, a circuit diagram of the cold storage operation of the present embodiment is shown in FIG. In FIG. 13, the first diaphragm device 6,
The third throttle device 22, the second valve 26a, and the fourth
Is opened, one of the first valve 14 and the seventh valve 24 is closed, and the other throttle device and valve are closed. At this time, the refrigerant discharged from the compressor 1 is condensed in the outdoor heat exchanger 3, adiabatically expanded in the first expansion device 6 and the third expansion device 22, and evaporated in the first cold storage heat exchanger 10a. Heat storage medium 21 (eg, water)
The surface of the first cold storage heat exchanger 10a is frozen, and the vaporized refrigerant returns to the compressor 1.

In the thermal storage operation, a large amount of refrigerant is distributed in the thermal storage heat exchanger because the first or second thermal storage heat exchangers 10a and 10b are used as condensers. Therefore, the amount of refrigerant in the heat storage operation refrigeration cycle depends on the general cooling operation, the general heating operation, and the first or second heat exchanger 10 for cold storage heat.
A large amount is required as compared with the heat dissipation operation and the cold storage operation in which a and b are used as evaporators. Therefore, control for properly allocating the refrigerant amount in the refrigeration cycle is required.

Next, the control of the amount of refrigerant in the refrigeration cycle during the heat storage operation of this embodiment will be described with reference to FIG. 14 of a control block diagram. Refrigerating cycle refrigerant amount adjusting means 203
According to the first embodiment, when the heat storage operation is started, the flow path of the four-way switching valve 28 is switched to the cold storage side as a preparatory operation, and the second valve 26a and the fourth valve of the first cold storage heat exchanger 10a. 27a is closed, the third valve 26b and the fifth valve 27b of the second heat storage heat exchanger 10b are opened, and the operation of performing the cold storage operation is performed simultaneously (S41). 5 cool storage operations
By performing the heat treatment for one minute (S42), the amount of the refrigerant in the second cold storage heat exchanger 10b used as the evaporator is reduced. After the end of the cold storage operation for 5 minutes, the flow path of the four-way switching valve 28 is switched to the heat storage side, and the first cold storage heat exchanger 1
The second valve 26a and the fourth valve 27a of the second cold storage heat exchanger 10b are opened.
The operation of closing the 6b and the fifth valve 27b and starting the heat storage operation is performed simultaneously (S43, S44). At this point, a large amount of refrigerant exists in the refrigeration cycle of the heat storage operation. Then, when the water temperature of the heat storage tank 9 exceeds 40 ° C. (S45), the heat storage operation ends (S46).

Embodiment 5 FIG. Hereinafter, a heat storage type air conditioner according to Embodiment 5 of the present invention will be described with reference to the drawings.
FIG. 15 shows a refrigerant circuit diagram of the regenerative air conditioner of the present embodiment. In the figure, the same components as those in FIG. 1 of the first embodiment are denoted by the same reference numerals, and description thereof will be omitted. The difference from FIG. 1 is as follows. That is, the heat storage tank is divided into a plurality of divided heat storage tanks 9A and 9B.
And each of the divided heat storage tanks 9A,
9B is that the first heat exchanger for cold storage heat 10a or the second heat exchanger for cold storage heat 10b is arranged.

Incidentally, when a heat storage tank is installed in a space as shown in FIG. 16, if the size (width × depth × height) of the heat storage tank is 2 m × 1 m × 2 m, it cannot be accommodated. However, the heat storage tank has a size of 1m × 1m × 2
m heat storage tanks 9A and 9B
Can be stored in different places. In this way, the method of installing the heat storage tank has a range of choices. Further, even if one of the divided heat storage tanks becomes unusable due to water leakage or the like, it is possible to use another divided heat storage tank.

In each of the embodiments described above, an example is shown in which one second heat exchanger for cold storage heat is provided. However, the present invention is not limited to this, and a plurality of second heat exchangers for cold storage heat are provided. It may be arranged side by side.

[0055]

According to the regenerative air conditioner of the present invention, even if a part of the regenerator heat exchanger or the like cannot be used due to a failure, the regenerator heat exchanger or the regenerator is replaced. It is not necessary to perform the operation, and the air-conditioning operation using the heat storage using the cold storage / heat storage operation or the cooling / heating / radiation can be continuously performed.

Further, regarding the heat dissipation / heating operation, not only immediately after the completion of nighttime heat storage, but also in the case where the temperature of the heat storage medium in the heat storage tank decreases as the heat storage is used once, efficient heat storage Use heating operation can be performed.

With respect to the cooling / cooling operation, in order to further increase the power consumption night shift rate, the amount of cold storage used per unit time used for the cooling / cooling operation at the peak of the power consumption, that is, the heat exchange for cold storage heat The amount of cooling that is proportional to the heat transfer area of the vessel can be increased.

Further, regarding the heat storage operation, when the outside air temperature is low, a large amount of refrigerant is likely to be distributed in unused indoor units and pipes, so that the amount of refrigerant in the refrigerant circuit to be used tends to be insufficient. However, since the cold storage operation is slightly performed as the preliminary operation before the heat storage operation, the heat storage operation can be started after the refrigerant in the unused heat storage heat exchanger is moved to the refrigerant circuit. As a result, it is possible to avoid falling into a heat storage operation state due to an insufficient amount of refrigerant.

Further, since a plurality of divided heat storage tanks having the same total capacity as the required heat storage tanks are used, even if the space for installing the heat storage tanks is dispersed and the individual dispersion space is narrow, such a case is required. A heat storage tank can be installed in a small space.

[Brief description of the drawings]

FIG. 1 is a refrigerant circuit diagram according to Embodiment 1 of the present invention.

FIG. 2 is a refrigerant circuit diagram during a heat radiation and heating operation when a heat storage chamber 9a according to a second embodiment is used.

FIG. 3 is a refrigerant circuit diagram during a heat radiation and heating operation when a heat storage chamber 9b according to a second embodiment is used.

FIG. 4 is a refrigerant circuit diagram during a general heating operation according to a second embodiment.

FIG. 5 is a diagram showing a heating time zone operation switching state according to a second embodiment.

FIG. 6 is a control block diagram of switching of heating time zone operation according to a second embodiment.

FIG. 7 is a refrigerant circuit diagram of a cooling operation combined with cold storage when the heat storage chamber 9a according to the third embodiment is used.

FIG. 8 is a refrigerant circuit diagram of a cooling operation combined with cold storage when the heat storage chamber 9b according to the third embodiment is used.

FIG. 9 is a refrigerant circuit diagram of a general cooling operation according to a third embodiment.

FIG. 10 is a switching state diagram of a cooling time zone operation according to a third embodiment.

FIG. 11 is a control block diagram of cooling time zone operation switching according to a third embodiment.

FIG. 12 is a refrigerant circuit diagram of a heat storage operation according to a fourth embodiment.

FIG. 13 is a refrigerant circuit diagram of a cold storage operation according to a fourth embodiment.

FIG. 14 is a control block diagram of a heat storage operation according to a fourth embodiment.

FIG. 15 is a refrigerant circuit diagram according to a fifth embodiment.

FIG. 16 is an installation diagram of a heat storage tank unit according to a fifth embodiment.

FIG. 17 is a refrigerant circuit diagram of a conventional example.

FIG. 18 is a refrigerant circuit diagram during a cold storage operation of a conventional example.

19 is an operation circuit diagram in the refrigerant circuit of FIG.

FIG. 20 is a refrigerant circuit diagram during a general cooling operation of a conventional example.

21 is an operation state diagram of the refrigerant circuit of FIG. 20.

FIG. 22 is a refrigerant circuit diagram during a cooling operation according to a conventional example.

FIG. 23 is an operation state diagram of the refrigerant circuit of FIG. 22.

FIG. 24 is a refrigerant circuit diagram of a conventional example at the time of cooling operation combined with cold storage heat.

25 is an operation state diagram of the refrigerant circuit of FIG. 24.

FIG. 26 is a refrigerant circuit diagram during a heat storage operation of a conventional example.

FIG. 27 is an operation state diagram of the refrigerant circuit of FIG. 26.

FIG. 28 is a refrigerant circuit diagram of a conventional example during a general heating operation.

FIG. 29 is an operation state diagram of the refrigerant circuit of FIG. 28.

FIG. 30 is a refrigerant circuit diagram during a heat dissipation operation of a conventional example.

31 is an operation state diagram of the refrigerant circuit of FIG. 30.

FIG. 32 is a refrigerant circuit diagram of a conventional example during a heating operation combined with heat storage.

FIG. 33 is an operation state diagram of the refrigerant circuit of FIG. 32.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Compressor 3 Outdoor heat exchanger 6 1st expansion device 9 Heat storage tank 9a, 9b Heat storage chamber 9A, 9B Split heat storage tank 10a 1st heat exchanger for cold storage heat 10b 2nd heat exchanger for cold storage heat 12 Refrigerant pump 14 First valve 15a, 15b, 15c Second throttle device 16a, 16b, 16c Indoor heat exchanger 21 Heat storage medium 22 Third throttle device 23 Sixth valve 24 Seventh valve 26a Second Valve 26b Third valve 27a Fourth valve 27b Fifth valve 28 Four-way switching valve 104a, 104b, 103, 108, 121, 122
a, 122b, 122c, 123a, 123b, 123
c, 124a, 124b, 124c, 120, 128
a, 128b, 139, 129 Refrigerant piping 105, 112, 118, 119 First connection piping 130, 133, 132, 131 Second connection piping 136, 137 Third connection piping 201 Heat storage use heat exchanger management means 202 Cold heat use heat exchanger management means 203 Refrigerant cycle refrigerant amount adjustment means

Claims (5)

[Claims] 1. A compressor, a four-way switching valve, an outdoor heat exchanger,
A general cooling and heating circuit in which a first expansion device, a second expansion device, and an indoor-side heat exchanger are sequentially connected by piping; and the first expansion device to the second expansion device of the general cooling and heating circuit And between the indoor heat exchanger and the compressor through a third expansion device, a first regenerator heat exchanger, and a first valve to connect the compressor and the outdoor. A first connection pipe which constitutes a cool storage / heat storage circuit together with a heat exchanger and the first expansion device; a first connection pipe between the four-way switching valve of the general cooling / heating circuit and a suction side of the compressor; The connection between the first valve of the first connection pipe and the first heat exchanger for cold storage heat via a refrigerant pump, the first heat exchanger for cold storage heat, the third expansion device, Second
With the expansion device and the indoor heat exchanger.
A heat-storage type air conditioner, comprising: a second connection pipe constituting a heat-dissipating circuit; and a heat storage tank in which the first heat-storage heat exchanger is disposed in a heat storage medium stored in the tank. One or a plurality of second regenerative heat exchangers disposed in the heat exchanger and constituting a part of the refrigerating / radiating circuit, in parallel with the first regenerative heat exchanger. A second valve provided on one outlet side of the first cold storage heat exchanger of the first connection pipe, and a second valve of the first connection pipe. A third valve provided on one outlet side of the heat exchanger for cold storage heat of
A fourth valve provided on the other outlet side of the first cold storage heat exchanger of the first connection pipe; and a fourth valve of the second cold storage heat exchanger of the first connection pipe. A fifth valve provided on the other outlet side, between the four-way switching valve of the general cooling and heating circuit and the suction side of the compressor, and from the first valve of the first connection pipe to the first valve. And a third connection pipe connecting between the pipe connection positions of the second regenerative heat exchanger via a sixth valve. 2. A compressor, a four-way switching valve, an outdoor heat exchanger,
A general cooling and heating circuit in which a first expansion device, a second expansion device, and an indoor-side heat exchanger are sequentially connected by piping; and the first expansion device to the second expansion device of the general cooling and heating circuit And between the indoor heat exchanger and the compressor through a third expansion device, a first regenerator heat exchanger, and a first valve to connect the compressor and the outdoor. A first connection pipe which constitutes a cool storage / heat storage circuit together with a heat exchanger and the first expansion device; a first connection pipe between the four-way switching valve of the general cooling / heating circuit and a suction side of the compressor; The connection between the first valve of the first connection pipe and the first heat exchanger for cold storage heat via a refrigerant pump, the first heat exchanger for cold storage heat, the third expansion device, Second
With the expansion device and the indoor heat exchanger.
A heat-storage type air conditioner, comprising: a second connection pipe forming a heat-dissipating circuit; and a heat storage tank in which the first cool storage heat exchanger is disposed in a heat storage medium stored in the tank. One or a plurality of second regenerative heat exchangers disposed in the heat exchanger and constituting a part of the refrigerating / radiating circuit, in parallel with the first regenerative heat exchanger. The heat storage tank is divided into a plurality of heat storage chambers, and the first or second heat exchanger for cold storage heat is arranged in each of the heat storage chambers. A second valve provided on one outlet side of the first cold storage heat exchanger of the connection pipe, and one outlet side of the second cold storage heat exchanger on the first connection pipe; And a third valve provided between the four-way switching valve of the general cooling and heating circuit and the suction side of the compressor. A third connection pipe for connecting, via a sixth valve, a connection between the first connection pipe and the pipe connection positions of the first and second cold storage heat exchangers from the first valve to the first connection pipe via a sixth valve; When performing the heat-storage-based heating operation using the cooling / radiating circuit, the second valve and the third valve are switched between open and closed to switch between the first and second cold storage heat exchangers. A heat storage type air conditioner, comprising: a heat storage use heat exchanger management unit that uses heat storage of a heat storage medium. 3. A compressor, a four-way switching valve, an outdoor heat exchanger,
A general cooling and heating circuit in which a first expansion device, a second expansion device, and an indoor-side heat exchanger are sequentially connected by piping; and the first expansion device to the second expansion device of the general cooling and heating circuit And between the indoor heat exchanger and the compressor through a third expansion device, a first regenerator heat exchanger, and a first valve to connect the compressor and the outdoor. A first connection pipe which constitutes a cool storage / heat storage circuit together with a heat exchanger and the first expansion device; a first connection pipe between the four-way switching valve of the general cooling / heating circuit and a suction side of the compressor; The connection between the first valve of the first connection pipe and the first heat exchanger for cold storage heat via a refrigerant pump, the first heat exchanger for cold storage heat, the third expansion device, Second
With the expansion device and the indoor heat exchanger.
A heat-storage type air conditioner, comprising: a second connection pipe forming a heat-dissipating circuit; and a heat storage tank in which the first cool storage heat exchanger is disposed in a heat storage medium stored in the tank. One or a plurality of second regenerative heat exchangers disposed in the heat exchanger and constituting a part of the refrigerating / radiating circuit, in parallel with the first regenerative heat exchanger. The heat storage tank is divided into a plurality of heat storage chambers, and the first or second heat exchanger for cold storage heat is arranged in each of the heat storage chambers. A second valve provided on one outlet side of the first cold storage heat exchanger of the connection pipe, and one outlet side of the second cold storage heat exchanger on the first connection pipe; And a third valve provided between the four-way switching valve of the general cooling and heating circuit and the suction side of the compressor. A third connection pipe for connecting, via a sixth valve, a connection between the first connection pipe and the pipe connection positions of the first and second cold storage heat exchangers from the first valve to the first connection pipe via a sixth valve; When performing the cooling operation utilizing the cooling energy using the cooling / radiating circuit, the second valve and the third valve are switched between open and closed to produce either the first or second heat exchanger for cold storage heat. Alternatively, a regenerative air conditioner comprising: a cold-heat-using heat exchanger managing means that uses cold energy of a heat storage medium by both of them. 4. A compressor, a four-way switching valve, an outdoor heat exchanger,
A general cooling and heating circuit in which a first expansion device, a second expansion device, and an indoor-side heat exchanger are sequentially connected by piping; and the first expansion device to the second expansion device of the general cooling and heating circuit And between the indoor heat exchanger and the compressor through a third expansion device, a first regenerator heat exchanger, and a first valve to connect the compressor and the outdoor. A first connection pipe which constitutes a cool storage / heat storage circuit together with a heat exchanger and the first expansion device; a first connection pipe between the four-way switching valve of the general cooling / heating circuit and a suction side of the compressor; The connection between the first valve of the first connection pipe and the first heat exchanger for cold storage heat via a refrigerant pump, the first heat exchanger for cold storage heat, the third expansion device, Second
With the expansion device and the indoor heat exchanger.
A heat-storage type air conditioner, comprising: a second connection pipe forming a heat-dissipating circuit; and a heat storage tank in which the first cool storage heat exchanger is disposed in a heat storage medium stored in the tank. One or a plurality of second regenerative heat exchangers disposed in the heat exchanger and constituting a part of the refrigerating / radiating circuit, in parallel with the first regenerative heat exchanger. A second valve provided on one outlet side of the first cold storage heat exchanger of the first connection pipe, and a second valve of the first connection pipe. A third valve provided on one outlet side of the heat exchanger for cold storage heat of
A pipe connection position between the four-way switching valve of the general cooling and heating circuit and the suction side of the compressor, and from the first valve of the first connection pipe to the first and second cold storage heat exchangers. And a third connection pipe connecting the first and second cold storages via a sixth valve, and performing the cold storage operation for a predetermined time before performing the heat storage operation using the cool storage / heat storage circuit. A regenerative air conditioner comprising: a refrigerant amount adjusting means in a refrigeration cycle for discharging a refrigerant from a heat exchanger for heat. 5. A compressor, a four-way switching valve, an outdoor heat exchanger,
A general cooling and heating circuit in which a first expansion device, a second expansion device, and an indoor-side heat exchanger are sequentially connected by piping; and the first expansion device to the second expansion device of the general cooling and heating circuit And between the indoor heat exchanger and the compressor through a third expansion device, a first regenerator heat exchanger, and a first valve to connect the compressor and the outdoor. A first connection pipe which constitutes a cool storage / heat storage circuit together with a heat exchanger and the first expansion device; a first connection pipe between the four-way switching valve of the general cooling / heating circuit and a suction side of the compressor; The connection between the first valve of the first connection pipe and the first heat exchanger for cold storage heat via a refrigerant pump, the first heat exchanger for cold storage heat, the third expansion device, Second
With the expansion device and the indoor heat exchanger.
A heat-storage type air conditioner, comprising: a second connection pipe forming a heat-dissipating circuit; and a heat storage tank in which the first cool storage heat exchanger is disposed in a heat storage medium stored in the tank. One or a plurality of second regenerative heat exchangers disposed in the heat exchanger and constituting a part of the refrigerating / radiating circuit, in parallel with the first regenerative heat exchanger. And the heat storage tanks are separately and independently configured as a plurality of divided heat storage tanks, and the first or second heat exchanger for cold storage heat is disposed in each of the divided heat storage tanks. Heat storage type air conditioner.