JP2000046434A - Air conditioning apparatus equipped with ice heat storage tank - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable realization of a cooling operation utilizing the cold heat of ice in an ice heat storage tank, with power consumption reduced. SOLUTION: In an air conditioning apparatus 20 which has a heat source side unit 21 equipped with a compressor 28 and a heat source side heat exchanger 30, an ice heat storage unit 22 having a coil 34 disposed in a submerged state in an ice heat storage tank 35 and a use side unit 23 equipped with a use side heat exchanger 32 and is equipped with the ice heat storage tank enabling execution of an ice making operation and a cooling operation, surge tanks 43A and 43B which can reserve a refrigerant are disposed in a parallel state between the coil 34 in the ice heat storage tank 35 and the use side heat exchanger 32. A liquid refrigerant condensed in the coil 34 is reserved in the tanks 43A and 43B and this reserved liquid refrigerant is made sendable under pressure to the use side heat exchanger by a high-pressure gas refrigerant produced alternately in the tanks by a first heater 47A and a second heater 47B.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner having an ice heat storage tank, and more particularly to an air conditioner having an ice heat storage tank for performing cooling and cooling operation by radiating cold stored in an ice heat storage unit. Related to the device.

[0002]

2. Description of the Related Art Generally, as shown in FIG.
A heat source side unit 5 including a heat source side heat exchanger 2, a four-way valve 3 and an electric expansion valve 4, and an ice capable of forming ice on the outer periphery of the coil 7 with a coil 7 disposed in a submerged state in an ice heat storage tank 6. An air conditioner 11 having a heat storage unit 8 and a use side unit 10 including a use side heat exchanger 9 and capable of performing an ice making operation, a cooling / cooling operation, and a normal cooling operation is known.

[0003] In the ice making operation, the gas refrigerant from the compressor 1 passes through the heat source side heat exchanger 2 to become a liquid refrigerant, and then flows through the electric expansion valve 4 into the coil 7 in the ice heat storage tank 6 to evaporate. After the ice making operation is performed in the ice heat storage tank 6, the gas refrigerant is returned to the compressor 1 for execution.

In the cooling / cooling operation, the compressor 1 of the heat source side unit 5 is stopped, and a circulating pump 12 such as a liquid pump or a gas pump installed in the ice heat storage unit 8 for pumping the refrigerant.
(In FIG. 3, the liquid pump for pumping the liquid refrigerant is operated). That is, by the operation of the circulation pump 12, the liquid refrigerant that has absorbed and condensed the cold stored in the ice in the coil 7 of the ice heat storage tank 6 of the ice heat storage unit 8 is pumped to the use-side heat exchanger 9, User side heat exchanger 9
, The liquid refrigerant evaporates, and the cooling / cooling operation is performed by the latent heat of evaporation and the heat radiation of the cold heat of ice.

In the normal cooling operation, the refrigerant that has been guided from the compressor 1 to the heat source side heat exchanger 2 and becomes a liquid refrigerant flows to the use side heat exchanger 9 without flowing into the coil 7 of the ice heat storage tank 6. The liquid refrigerant is supplied to evaporate the liquid refrigerant, and the operation is performed by the latent heat of evaporation.

[0006]

Since the cooling / cooling operation described above is performed by driving the circulating pump 12, it is necessary to start the drive motor of the circulating pump 12. Therefore, power consumption increases for performing the cooling / cooling operation. Further, when the circulation pump 12 is a gas pump, the volume of the mechanical part which is almost the same as that of the compressor is required, and the mechanical loss is large.

SUMMARY OF THE INVENTION The present invention has been made in consideration of the above circumstances, and has been made in consideration of the above circumstances, and has been made in consideration of the above circumstances. It is to provide a harmony device.

[0008]

According to the first aspect of the present invention,
A heat source side unit including a compressor and a heat source side heat exchanger,
An ice heat storage unit in which a coil is disposed in a submerged state in an ice heat storage tank and ice can be formed on the outer periphery of the coil, and a use-side unit having a use-side heat exchanger, and perform an ice making operation and a cooling operation. In an air conditioner having an ice heat storage tank to be enabled, a plurality of tanks capable of storing a refrigerant are arranged in parallel between the coil and the use side heat exchanger in the ice heat storage tank. The liquid refrigerant condensed in the coil is stored in the tank, and high-pressure gas refrigerant generated alternately in these tanks is configured to be capable of being pumped to the use side heat exchanger, and the high-pressure gas refrigerant is An ice heat storage tank characterized by being generated in the tank by alternately heating the inside of the plurality of tanks.

According to a second aspect of the present invention, in the first aspect of the present invention, the high-pressure gas refrigerant alternately heats heaters built in a plurality of tanks, respectively.
It is characterized by being generated in the tank.

According to a third aspect of the present invention, a heat source side unit having a compressor and a heat source side heat exchanger is provided, and a coil is disposed in a submerged state in an ice heat storage tank so that ice can be formed on the outer periphery of the coil. An air conditioner including an ice heat storage unit and a use side unit having a use side heat exchanger and having an ice heat storage tank capable of performing an ice making operation and a cooling operation, wherein the coil in the ice heat storage tank is provided. A plurality of tanks capable of storing the refrigerant are arranged in parallel between the and the use-side heat exchanger, and the liquid refrigerant condensed in the coil is stored in the tank, and is transferred into these tanks. Ice, wherein the high-pressure gas refrigerant is configured to be able to be pressure-fed to the use-side heat exchanger by alternately supplied high-pressure gas refrigerant, and the high-pressure gas refrigerant is generated by heat exchange with outside air by the heat exchanger. It has a heat storage tank.

The invention described in claim 1 or 2 has the following operation.

By alternately heating the insides of the plurality of tanks, high-pressure gas refrigerant is generated alternately in these tanks, and the pressure of the high-pressure gas refrigerant causes the liquid refrigerant stored in the tanks to exchange heat on the use side. Since it is configured to be able to send pressure to the tank, high pressure gas refrigerant can be easily generated in the tank because the tank is a substantially closed container, and as a result, cooling operation using the cold heat of ice in the ice storage tank is omitted. It can be realized with power consumption.

The third aspect of the invention has the following operation.

The high-pressure gas refrigerant generated by heat exchange with the outside air by the heat exchanger is alternately supplied into a plurality of tanks, and the liquid refrigerant stored in these tanks is pressure-fed to the use-side heat exchanger. Because it is configured so that the outside air is at a high temperature during the cooling operation, a high-pressure gas refrigerant can be easily generated by the heat exchanger, and as a result, the cooling operation using the cold heat of the ice in the ice storage tank can be reduced. It can be realized with electric power.

[0015]

Embodiments of the present invention will be described below with reference to the drawings.

[A] First Embodiment FIG. 1 is a pipeline diagram showing a first embodiment of an air conditioner having an ice heat storage tank according to the present invention.

The air conditioner 20 shown in FIG. 1 includes a heat source side unit 21, an ice heat storage unit 22, and a use side unit 23. The refrigerant pipes 24 of the heat source side unit 21 are connected to the refrigerant pipes 25, 26 of the ice heat storage unit 22.
Is connected to the refrigerant pipe 27 of the use-side unit 23 via the.

The heat source side unit 21 is configured by connecting a compressor 28, a four-way valve 29, a heat source side heat exchanger 30 and an electric expansion valve 31 to a refrigerant pipe 24 in order. Further, the use side unit 23 is configured such that the use side heat exchanger 32 and the electric expansion valve 33 are disposed in the refrigerant pipe 27, and the degree of opening of the electric expansion valve 33 is adjusted according to the air conditioning load.

The ice heat storage unit 22 includes an ice heat storage tank 35 accommodating a coil 34,
An on-off valve 36 is provided, and a second on-off valve 37 is provided on the refrigerant pipe 26. Further, the first on-off valve 3 is connected to the refrigerant pipe 25.
One end of the coil 34 is connected to the use side unit 23 side from the disposition position 6 via a connection pipe 38, and an electric expansion valve 39 is disposed on the connection pipe 38. In addition, coil 3
The other end of 4 is connected via a connection pipe 41 provided with a third on-off valve 40 to the use side unit 23 side of the refrigerant pipe 26 where the second on-off valve 37 is provided.

The ice heat storage tank 35 is filled with water, and the coil 3
4 is provided in the ice heat storage tank 35 in a state of being submerged. During the ice making operation of the air conditioner 20, the liquid refrigerant flows from the heat source side heat exchanger 30 and evaporates in the coil 34, whereby ice adheres to the outer periphery of the coil 34 and is formed.

Two surge tanks 43A and 43B are connected in parallel to the connection pipe 38 between a motor-operated expansion valve 39 and the coil 34 via a branch pipe 42 that branches into two branches. These surge tanks 43 </ b> A and 43 </ b> B are connected via a merging pipe 44 between the position where the first on-off valve 36 is disposed in the refrigerant pipe 25 and the position where the connection pipe 38 is connected. Thereby, the surge tanks 43A and 43B are disposed between the coil 34 in the ice heat storage tank 35 and the use side heat exchanger 32, and are condensed by the cold stored in the ice in the ice heat storage tank 35. A liquid refrigerant is provided so as to be able to be stored.

The branch pipe 42 has a surge tank 43A,
Inflow side check valves 45A and 45B are provided on the inflow side of 43B, and outflow side check valves 46A and 46B are provided on the merging pipe 44 on the outflow side of the surge tanks 43A and 43B, respectively. These inflow side check valves 45A, 45B are connected to the surge tanks 43A, 43A from the coil 34 of the ice heat storage tank 35.
B, allowing only the flow of the refrigerant flowing to
A and 46B allow only the flow of the refrigerant flowing from the surge tanks 43A and 43B to the use-side heat exchanger 32 side.

A first heater 47A and a second heater 47B are built in the surge tanks 43A and 43B, respectively, and these are selectively energized to be heated alternately.
High-pressure gas refrigerant is generated alternately in the surge tanks 43A and 43B. By the pressure of the high-pressure gas refrigerant, the liquid refrigerant stored in the surge tank 43A or 43B in which the high-pressure gas refrigerant is generated can be pressure-fed to the use-side heat exchanger 32.

Next, the ice making operation, the cooling / cooling operation, and the normal cooling operation of the air conditioner 20 will be described.

[A-1] Ice Making Operation The ice making operation of the air conditioner 20 is performed, for example, by using the liquid refrigerant from the heat source side heat exchanger 30 as an ice during a time period when the electricity rate is low from 10:00 at night to 8:00 in the next morning. This is an operation of supplying ice into the coil 34 of the heat storage tank 35 and forming ice in the ice heat storage tank 35.

In this case, the electric expansion valve 33 is closed, and the first on-off valve 36, the second on-off valve 37, the third on-off valve 40
The electric expansion valve 39 is opened.

In this state, when the compressor 28 of the heat source side unit 21 is operated, the gas refrigerant discharged from the compressor 28 is condensed in the heat source side heat exchanger 30 and the electric expansion valves 31 and 39 are provided. , And flows into the coil 34 of the ice heat storage tank 35. The refrigerant that has flowed into the coil 34 evaporates and forms with ice adhered to the outer periphery of the coil 34. Thereafter, the gas refrigerant in the coil 34 is connected to the connection pipe 41.
And a refrigerant pipe 26 to a four-way valve 29, and a compressor 28
Is returned to.

[A-2] Cooling / cooling operation In the cooling / cooling operation of the air conditioner 20, for example, during the daytime when the temperature rises, the air conditioner 20 is liquefied by the cold heat of the ice in the coil 34 of the ice heat storage tank 35. The liquid refrigerant stored in the surge tanks 43A, 43B is transferred to the surge tanks 43A, 43B.
This is performed by pumping from B to the use side heat exchanger 32.

In this case, the first on-off valve 36, the second on-off valve 37 and the electric expansion valve 39 are closed, and the electric expansion valve 33
And the third on-off valve 40 is operated to open. Further, the compressor 28 of the heat source side unit 21 is in a stopped state after the ice making operation is completed.

In this state, the first heater 47A and the second heater 47B are selectively energized to heat them alternately. For example, the first heater 47A is heated so that the surge tank 43
A high-pressure gas refrigerant is generated inside A. Then, due to the pressure of the high-pressure gas refrigerant, the stored liquid refrigerant in the surge tank 43A flows into the use side heat exchanger 32 via the outflow check valve 46A, the merge pipe 44, and the refrigerant pipes 25 and 27. Since the liquid refrigerant stored in the surge tank 43A passes through the coil 34 of the ice heat storage tank 35 and is condensed by the cold stored in the ice in the ice heat storage tank 35, the use-side heat exchanger 32 By evaporating inside the room, the room is efficiently cooled by the heat radiation (cooling) of the cold heat of the ice and the latent heat of evaporation.

The gas refrigerant evaporated in the use side heat exchanger 32 passes through the connection pipe 41 and the third opening / closing valve 40 and is stored in the ice heat storage tank 3.
5 and into the ice heat storage tank 35 as described above.
Is cooled by the cold heat of the ice inside, and becomes the inflow-side check valve 45.
B flows into the surge tank 43B.

At this time, since the pressure in the surge tank 43A is high, the liquid refrigerant in the coil 34 of the ice heat storage tank 35 does not flow into the surge tank 43A,
Flows inside. Similarly, since the pressure inside the surge tank 43B is lower than that of the surge tank 43A,
The stored refrigerant in B does not flow out to the use-side heat exchanger 32 via the outflow-side check valve 46B.

When the liquid level of the refrigerant stored in the surge tank 43A drops below a predetermined value, the first heater 47
The energization of A is stopped, the second heater 47B is energized, and the second heater 47B is heated. Then, by the pressure of the high-pressure gas refrigerant generated in the surge tank 43B,
The liquid refrigerant stored in the surge tank 43B flows into the use side heat exchanger 32 through the outflow check valve 46B, the merge pipe 44, the refrigerant pipes 25 and 27, and the electric expansion valve 33, and evaporates. Similarly, the room is efficiently cooled by cooling and latent heat of evaporation.

The gas refrigerant from the use-side heat exchanger 32 passes through the connection pipe 41 and the third on-off valve 40 and is stored in the ice heat storage tank 3.
5 is condensed by the cold heat of the ice in the coil 34 of FIG.
Flows into the interior.

When the liquid level of the liquid refrigerant in the surge tank 43B drops below a predetermined value, the second heater 47B
Is stopped, the first heater 47A is heated to generate a high-pressure gas refrigerant in the surge tank 43A, and when the liquid level of the liquid refrigerant in the surge tank 43A falls to a predetermined value or less, the first heater 47A is turned off. The energization of the heater 47A is stopped,
The second heater 47B is heated to generate high-pressure gas refrigerant in the surge tank 43B, and the above operation is repeated to continue the cooling / cooling operation.

[A-3] Normal Cooling Operation The normal cooling operation of the air conditioner 20 is a cooling operation performed without using the cold heat stored in the ice in the ice heat storage tank 35. The third on-off valve 40 is closed, and the first on-off valve 36, the second on-off valve 37, and the electric expansion valves 31 and 33 are opened.

In this state, when the compressor 28 is operated,
The gas refrigerant discharged from the compressor 28 is condensed in the heat source side heat exchanger 30, and the electric expansion valve 31, the refrigerant pipe 25
After flowing into the use-side heat exchanger 32 through the electric expansion valve 33 and evaporating in the use-side heat exchanger 32 to cool the room by the latent heat of evaporation, the compressor passes through the refrigerant pipe 26 and the four-way valve 29. Returned to 28.

The air conditioner 20 of the above embodiment has the following effects because it is configured as described above.

By alternately heating the first heater 47A and the second heater 47B built in the surge tanks 43A and 43B, respectively, these surge tanks 43A and 43B are heated.
A and 43B alternately generate high-pressure gas refrigerant, and the pressure of the high-pressure gas refrigerant causes the surge tanks 43A and 43B
The surge tanks 43A and 43B are substantially hermetically sealed containers because the liquid refrigerant stored therein can be pumped to the use-side heat exchanger 32.
A and 43B can easily generate a high-pressure gas refrigerant, and as a result, the cooling / cooling operation using the cold heat of the ice in the ice heat storage tank 35 can be realized with low power consumption.

The first heater 47A and the second heater 47B built in the surge tanks 43A and 43B are selectively energized to generate high-pressure gas refrigerant alternately in the surge tanks 43A and 43B. Pressure, the liquid refrigerant in the surge tanks 43A and 43B is pressure-fed to the use-side heat exchanger 32 to perform the cooling / cooling operation. Therefore, the mechanism for performing the cooling / cooling operation does not require a movable part. Therefore, the configuration can be simplified and the configuration can be reduced. As a result, equipment costs can be reduced. In the air conditioner 20 of the above embodiment, the surge tank 43
A and 43B, a cooler (not shown) is disposed, and when the heating of the first heater 47A or the second heater 47B is stopped, the surge tank 43A or 4 in which the heating is stopped.
The inside of 3B may be actively cooled. By the action of the cooler, the pressure in the surge tanks 43A and 43B is quickly reduced, and the liquid refrigerant can be quickly flowed into the surge tanks 43A and 43B from the coil 34 in the ice heat storage tank 35.

[B] Second Embodiment FIG. 2 is a pipeline diagram showing a second embodiment of an air conditioner having an ice heat storage tank according to the present invention. In the second embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.

The air conditioner 50 of the second embodiment
Are the first heaters 47 in the surge tanks 43A and 43B.
A, the second heater 47B is deleted, and the surge tank 43A is removed.
And 43B are connected to a tank heat exchanger 53 via a tank branch pipe 51 and a tank merge pipe 52.

A branch portion 51A of the tank branch pipe 51 connected to the surge tank 43A is connected to the surge tank 43A.
A first tank opening / closing valve 54 and a second tank opening / closing valve 55 are provided in each of the branch portions 51B connected to B. The first tank on-off valve 54 and the second tank on-off valve 55 are selectively opened and closed. A branch portion 52A connected to the surge tank 43A in the tank merging pipe 52;
Tank check valves 56A and 56B are provided in each of the branch portions 52B connected to the surge tank 43B.

The tank heat exchanger 53 exchanges heat of the liquid refrigerant flowing from the surge tank 43A or 43B via the tank merging pipe 52 with the outside air by the action of a blower fan 57 disposed in the vicinity, as described later. A gas refrigerant can be supplied into the surge tank 43A or 43B via the tank branch pipe 51. By the pressure of the supplied high-pressure gas refrigerant, the liquid refrigerant stored in the surge tank 43A or 43B is provided so as to be pressure-fed to the use-side heat exchanger 32. Here, the liquid refrigerant flows into the tank heat exchanger 53 from the surge tank 43A or 43B on the side to which the high-pressure gas refrigerant is supplied via the tank check valve 56A or 56B.

The first tank opening and closing valve 54 and the second tank opening and closing valve 55 are both closed during the ice making operation and the normal cooling operation, and are selectively opened and closed during the cooling and cooling operation.

That is, for example, when the first tank opening / closing valve 54 is opened and the second tank opening / closing valve 55 is closed, the high pressure gas refrigerant generated in the tank heat exchanger 53 opens and closes the first tank. Surge tank 43A via valve 54
Thus, most of the liquid refrigerant stored in the surge tank 43 </ b> A is pressure-fed to the use-side heat exchanger 32, and the remainder is pressure-fed to the tank heat exchanger 53. When the liquid level of the liquid refrigerant in the surge tank 43A becomes equal to or lower than a predetermined value and the second tank opening / closing valve 55 is opened and the first tank opening / closing valve 54 is closed, the tank heat exchanger 53 is closed. Is supplied to the surge tank 43B via the second tank opening / closing valve 55, whereby most of the liquid refrigerant stored in the surge tank 43B is supplied to the use side heat exchanger 32. The remainder is pumped to the tank heat exchanger 53, respectively. Then, when the liquid level of the liquid refrigerant in the surge tank 43B falls below a predetermined value, the first tank opening / closing valve 54 is opened and the second tank opening / closing valve 55 is closed.

The cooling / cooling operation is continued by repeating the opening / closing operation of the first tank opening / closing valve 54 and the second tank opening / closing valve 55 described above.

Therefore, the air conditioner 5 of the above embodiment
According to 0, the following effects are obtained.

The high-pressure gas refrigerant generated by exchanging heat with the outside air by the tank heat exchanger 53 is supplied to the first tank opening / closing valve 5.
The liquid refrigerant stored in the surge tanks 43A and 43B is alternately supplied into the surge tanks 43A and 43B by the selective opening and closing operation of the fourth and second tank on-off valves 55, and the liquid refrigerant stored in the surge tanks 43A and 43B can be pumped to the use side heat exchanger 32 Since the outside air is at a high temperature during the cooling / cooling operation, high-pressure gas refrigerant can be easily generated by the tank heat exchanger 53, and as a result, cooling using the cold heat of ice in the ice heat storage tank can be performed. Cooling operation can be realized with low power consumption.

Although the present invention has been described based on one embodiment, the present invention is not limited to this.

For example, the inflow-side check valves 45A and 45B and the outflow-side check valves 46A and 46B are connected to the inflow-side on-off valves 60A and 60B.
B, may be replaced with the outflow side on-off valves 61A and 61B, respectively. In this case, these inflow-side on-off valves 60A, 60A
B, the outflow side on-off valves 61A and 61B are all closed during the ice making operation and the normal operation. Further, during the cooling / cooling operation, the inflow-side on-off valve 60A and the outflow-side on-off valve 61B open and close in conjunction with each other, and the inflow-side on-off valve 60B and the outflow-side on-off valve 61B.
A interlocks with the inflow-side on-off valve 60A and the outflow-side on-off valve 6
It opens and closes in reverse to 1B. In addition, surge tanks 43A,
3B may be three or more.

Further, the case where the surge tanks 43A and 43B are heated by the heaters 47A and 47B has been described. However, the heating may be performed by a heater or the like provided outside the surge tanks 43A and 43B.

[0053]

As described above, according to the air conditioner having the ice heat storage tank according to the first aspect of the present invention, the refrigerant is stored between the coil in the ice heat storage tank and the use side heat exchanger. A plurality of possible tanks are arranged in parallel, and the liquid refrigerant condensed in the coil is stored in the tank, and the high-pressure gas refrigerant generated alternately in these tanks causes the liquid refrigerant to reach the use side heat exchanger. Since the high-pressure gas refrigerant is formed in the tank by alternately heating the plurality of tanks, the high-pressure gas refrigerant is formed in the tank. A gas refrigerant can be easily generated, and as a result, a cooling operation using cold heat of ice in an ice heat storage tank can be realized with low power consumption.

Further, according to the air conditioner having the ice heat storage tank according to the second aspect of the present invention, a plurality of refrigerants capable of storing the refrigerant between the coil in the ice heat storage tank and the use side heat exchanger. Tanks are arranged in parallel, the liquid refrigerant condensed in the coil is stored in the tank, and can be pumped to the use side heat exchanger by the high-pressure gas refrigerant supplied alternately into these tanks Since the high-pressure gas refrigerant is configured by exchanging heat with the outside air by the heat exchanger, the high-temperature gas can be easily generated by the heat exchanger because the outside air has a high temperature during the cooling operation. As a result, the cooling operation using the cold heat of the ice in the ice heat storage tank can be realized with low power consumption.

[Brief description of the drawings]

FIG. 1 is a pipeline diagram showing a first embodiment of an air conditioner including an ice heat storage tank according to the present invention.

FIG. 2 is a pipeline diagram showing a second embodiment of an air conditioner including an ice heat storage tank according to the present invention.

FIG. 3 is a pipeline diagram showing an air conditioner provided with a conventional ice heat storage tank.

[Explanation of symbols]

 Reference Signs List 20 air conditioner 21 heat source side unit 22 ice heat storage unit 23 user side unit 28 compressor 29 four-way valve 32 user side heat exchanger 34 coil 35 ice heat storage tank 43A, 43B surge tank 47A first heater 47B second heater 50 air conditioning Device 53 Tank heat exchanger 54 First tank on-off valve 55 Second tank on-off valve

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Miaki Kurosawa 2-5-5 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. F-term (reference) 3L092 TA11 TA20 UA00 UA02 UA34 VA07 WA15

Claims (3)

[Claims] 1. A heat source unit including a compressor and a heat source side heat exchanger, an ice heat storage unit having a coil disposed in a submerged state in an ice heat storage tank and capable of forming ice on the outer periphery of the coil, A use side unit having a side heat exchanger,
In an air conditioner including an ice heat storage tank capable of performing an ice making operation and a cooling operation, a plurality of tanks capable of storing a refrigerant are provided between the coil and the use side heat exchanger in the ice heat storage tank. The liquid refrigerant condensed in the coil is disposed in a parallel state, is stored in the tank, and is configured to be capable of being pumped to the use side heat exchanger by high-pressure gas refrigerant generated alternately in these tanks. An air conditioner having an ice heat storage tank, wherein the high-pressure gas refrigerant is generated in the plurality of tanks by alternately heating the plurality of tanks. 2. The high-pressure gas refrigerant heats heaters respectively incorporated in a plurality of tanks alternately,
The air conditioner provided with the ice heat storage tank according to claim 1, wherein the air conditioner is generated in the tank. 3. A heat source side unit having a compressor and a heat source side heat exchanger, an ice heat storage unit having a coil disposed in a submerged state in an ice heat storage tank and capable of forming ice on the outer periphery of the coil, A use side unit having a side heat exchanger,
In an air conditioner including an ice heat storage tank capable of performing an ice making operation and a cooling operation, a plurality of tanks capable of storing a refrigerant are provided between the coil and the use side heat exchanger in the ice heat storage tank. The liquid refrigerant condensed in the coil is disposed in a parallel state, is stored in the tank, and is configured to be capable of being pumped to the use side heat exchanger by a high-pressure gas refrigerant supplied alternately into these tanks. An air conditioner equipped with an ice heat storage tank, wherein the high-pressure gas refrigerant is generated by exchanging heat with outside air by a heat exchanger.