JPH06221717A - Air conditioning apparatus - Google Patents

Abstract

PURPOSE:To reduce the entire internal volume of a cold heat storage tank and a hot water supply tank, keeping a cooling/heating capability and a hot water supply capability at predetermined levels. CONSTITUTION:There are assembled into a refrigeration cycle a cold heat storage tank 21 capable of storing cold and hot heats in water by heat- exchanging a refrigerant in the refrigeration cycle and the water as an internally contained cold heat storage material through a heat storage heat exchanger 29, and a hot water supply tank 25 capable of supplying hot water by heat- exchanging the refrigerant in the refrigeration cycle and the water through a hot water supply heat exchanger 33.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention
The present invention relates to an air conditioner capable of heating using heat storage.

[0002]

2. Description of the Related Art As a conventional air conditioner, for example, there is one as shown in FIG. 18 (JP-A-2-282662).
(See Japanese Patent Publication). This air conditioner is of a heat pump type capable of cooling and heating using a refrigeration cycle composed of a compressor 1, a four-way valve 3, an indoor heat exchanger 5, an expansion valve 7, an outdoor heat exchanger 9, and the like. Cold storage tank 10 for cycle
Is incorporated. The cold storage tank 10 is filled with water W as a heat storage material, and the water W contains a heat storage heat exchanger 11 connected to the refrigeration cycle by piping.

During cold storage operation, the outdoor heat exchanger 9 serves as a condenser, and the heat storage heat exchanger 11 of the cold storage tank 10 serves as an evaporator.
When performing the cooling operation by using the cold storage heat tank 10 stored by the cold storage operation, the heat storage heat exchanger 11 of the cold storage heat tank 10 serves as a condenser and the indoor heat exchanger 5 serves as an evaporator. on the other hand,
During the heat storage operation, the heat storage heat exchanger 11 of the heat storage tank 10 serves as a condenser, and the outdoor heat exchanger 9 serves as an evaporator. During the heat storage recovery defrosting operation that uses the heat of the cold storage tank 10 stored by this heat storage operation, the indoor heat exchanger 5 functions as a condenser and the heat storage heat exchanger 11 functions as an evaporator, and the outdoor heat exchanger 9 Defrost.

Although such an air conditioner is capable of cooling and heating operations using stored heat, it has a concept of using the stored heat energy in a hot water supply tank in order to use it more effectively. Therefore, if a hot water supply tank is required, it is necessary to use a commercially available general electric water heater as shown in FIG. 19 in combination. This electric water heater includes a hot water supply tank 12 filled with water, and the water in the hot water supply tank 12 is heated by a heater 13 and used as hot water.

[0005]

However, in the above-mentioned conventional example, since the cold storage tank used for cooling and heating and the hot water supply tank composed of the electric water heater are designed independently of each other, the required cooling and heating capacity and In order to obtain hot water supply capacity, there is a problem that the total internal volume of the cold storage tank and the hot water supply tank becomes large, and the installation space also becomes large.

Therefore, an object of the present invention is to reduce the total internal volume of the cold storage tank and the hot water supply tank while maintaining the cooling and heating capacity and the hot water supply capacity at predetermined levels.

[0007]

To achieve the above object, the present invention provides an air conditioner having a refrigeration cycle including a compressor, an indoor heat exchanger, an outdoor heat exchanger, and the like. Refrigerant in the cycle, and a cold storage tank capable of cold storage and heat storage in water by heat exchange between the cold storage heat storage water and water in the heat exchanger, and the refrigerant and water in the refrigeration cycle A hot water supply tank capable of supplying hot water by exchanging heat with a heat exchanger is incorporated in the refrigeration cycle.

Further, according to the present invention, in an air conditioner having a refrigeration cycle composed of a compressor, an indoor heat exchanger, an outdoor heat exchanger, etc., the refrigerant in the refrigeration cycle and a plurality of water tanks are introduced. A heat exchanger for exchanging heat with water is provided, and the plurality of water tanks are provided with a hot water supply tank that supplies water that has been heated by the heat exchanger to become warm water, and heat energy of water inside. A configuration may be used in which a pipe is connected to the cold storage heat tank that transmits to the refrigerant on the refrigeration cycle side in the heat exchanger so that the heat can be switched by the switching means.

[0009]

According to the air conditioner having such a structure, the refrigerant circulated by the operation of the compressor and the water, which is the cold storage heat material in the cold storage heat tank, exchange heat with the heat exchanger or cool the water. The heat is stored, and the refrigerant and the water in the hot water supply tank exchange heat with a heat exchanger to become hot water.

Further, heat is exchanged by the heat exchanger between the refrigerant circulated by the operation of the compressor and the water in the plurality of water tanks. The plurality of water tanks are used as a hot water supply tank that supplies water that has been heated by the heat exchanger to become hot water, and a cold storage heat tank that transfers the heat energy of the internal water to the refrigerant on the refrigeration cycle side by the heat exchanger. , Is switched by the switching means.

[0011]

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

FIG. 1 is an overall configuration diagram of an air conditioner showing a first embodiment of the present invention. The outdoor unit 15 is the indoor unit 1
7 and the refrigerant pipe 19, and the cold storage tank 21 and the refrigerant pipe 23,
Refrigerant pipes 27 are connected to the hot water supply tank 25, respectively. The cold storage heat tank 21 is filled with water as a cold storage heat material, and the heat storage heat exchanger 29 and the heater 31 connected to the refrigerant pipe 23 are housed in the water. On the other hand, a hot water supply heat exchanger 33 connected to the refrigerant pipe 27 and a heater 35 are housed in the bottom portion of the hot water supply tank 25, and the water supplied into the hot water supply tank 25 is heated by these.

FIG. 2 is a configuration diagram of a refrigeration cycle in the air conditioner of FIG. This refrigeration cycle configuration includes a compressor 37 that compresses and discharges the refrigerant, two four-way valves 39 and 41 that change the flow direction of the refrigerant depending on operating conditions such as heating operation and cooling operation, a condenser during heating, and an evaporator during cooling. The indoor heat exchanger 43 that serves as a heat exchanger, and conversely, the outdoor heat exchanger 45 that serves as an evaporator during heating and a condenser during cooling, and a condenser during heat storage to raise the water temperature in the cold storage tank 21 , The heat storage heat exchanger 29 that serves as an evaporator during cold storage, the hot water supply heat exchanger 33 that acts as a condenser of the hot water supply tank 25, and the electronic expansion valve 47,
It is mainly composed of 49 and 51. Reference numerals 53, 55, 57, 59, 61 and 63 are on-off valves, and reference numeral 65 is a check valve.

In the air conditioner having such a structure, as shown in FIG.
Throughout, various operations as shown in FIG. 11 are performed. The flow of the refrigerant in these various operating states is shown by the arrows in FIG.
Is a cold storage operation, FIG. 4 is a cold storage hot water heating operation, FIG. 5 is a cold storage cooling operation, FIG. 6 is a normal cooling operation, FIG. 7 is a heat storage operation, and FIG.
Is heat storage hot water heating operation, FIG. 9 is heat storage utilization heating operation, FIG.
Is the normal heating operation, and FIG. 11 is the hot water supply heating operation.

In the cold storage operation of FIG. 3, the outdoor heat exchanger 45 serves as a condenser, and the heat storage heat exchanger 29 serves as an evaporator to store the cold storage layer 2
Cool the water in 1. In the cold storage hot water heating operation of FIG. 4, the hot water heat exchanger 33 serves as a condenser and the heat storage heat exchanger 29 serves as an evaporator to heat the water in the hot water supply tank 25 and cool the water in the cold storage heat tank 21. To do. In the cooling operation using cold storage of FIG. 5, the heat storage heat exchanger 29 serves as a condenser and the indoor heat exchanger 43 serves as an evaporator to perform cooling using the heat energy of the cold storage heat tank 21. In the normal cooling operation of FIG. 6, the outdoor heat exchanger 4
5 serves as a condenser, and the indoor heat exchanger 43 serves as an evaporator for cooling operation. In the heat storage operation of FIG. 7, the heat storage heat exchanger 29
Serves as a condenser and the outdoor heat exchanger 45 serves as an evaporator to heat the water in the cold storage heat tank 21. In the heat storage hot water supply heating operation of FIG. 8, the heat storage heat exchanger 29 and the hot water supply heat exchanger 33 are condensers,
The outdoor heat exchanger 45 serves as an evaporator to heat the water in the heat storage tank 21 and the water in the hot water supply tank 25, respectively. In the heating operation using heat storage in FIG. 9, the indoor heat exchanger 43 serves as a condenser and the heat storage heat exchanger 29 serves as an evaporator to perform heating using the thermal energy of the cold storage tank 21. In the normal heating operation of FIG. 10, the indoor heat exchanger 43 functions as a condenser, and the outdoor heat exchanger 45 functions as an evaporator, so that the heating operation is performed. In the hot water supply heating operation of FIG. 11, the hot water supply heat exchanger 33 is the condenser and the outdoor heat exchanger 45.
Serves as an evaporator to heat the water in the hot water supply tank 25.

FIG. 12 shows that the indoor unit 17 is provided with two indoor units.
It is a whole block diagram of the air conditioning apparatus set to A, 17B, and FIG. 13 is the refrigerating-cycle block diagram. This air conditioner has a structure in which only one indoor unit is added to the air conditioner shown in FIGS. 1 and 2, and other structures are the same as those in FIG.
And is similar to FIG. The number of indoor units may be three or more.

FIG. 14 shows an estimated value of the total internal volume obtained by adding the internal volumes of the cold storage tank and the hot water supply tank in the conventional example, and the calculated value of the total internal volume in the above embodiment. The assumptions used in the calculation of the total internal volume when the number of indoor units is 2 are listed below.

Cooling load during cold storage use: 2500 kcal / h ×
2 rooms x 5 hours = 25000 kcal Heating load when using heat storage: 3500 kcal / h x 2 rooms x 5 hours = 35000 kcal Cooling storage temperature: 0 ° C to 20 ° C Thermal storage usage temperature: 85 ° C to 50 ° C Hot water heating temperature: 15 ° C ~ 85 ° C Summer hot water supply load equivalent Hot water storage amount: 200 liters Winter hot water supply load equivalent Hot water storage amount: 400 liters Heat exchanger filling rate: 15% Where, cool storage amount when using cold storage = cooling load when using cold storage + heat of cold storage tank Loss + Power consumption of compressor when using cold storage …… (1) Heat storage required when using heat storage = Heating load when using heat storage + Heat loss of heat storage tank − Power consumption of compressor when using heat storage …… (2) In 14, the internal volume A of the cool storage tank is calculated from the cool storage amount and the cool storage use temperature required when the cool storage is used, which is obtained from the equation (1). On the other hand, the internal volume B of the heat storage tank is (2) above.
It is calculated from the heat storage amount required for heat storage use and the heat storage use temperature obtained from the formula. When water is used as the cold storage heat material and heat is exchanged by the direct expansion heat exchanger of the refrigeration cycle, the cool storage tank is generally larger than the heat storage tank. The reason for this is that, in the formula (1), it is necessary to store extra cold energy by the amount of compressor power consumption during cold energy utilization, and the cold energy utilization temperature width cannot be larger than the heat energy utilization temperature width. To be In the conventional example, since water is used as the cold storage heat storage material as in the above-described embodiment, the calculation is performed under the above assumptions and the internal volumes of the cold storage tank and the heat storage tank are estimated. The internal volume A of the cold storage tank is 1600 liters, and the internal volume B of the thermal storage tank is 1000 liters. The internal volume C of the cold storage tank is 1600 liters, whichever is larger. In the conventional example, since the hot water supply tank is independent, the amount of hot water storage equivalent to 400 liters in winter is the internal volume D of the hot water supply tank. Therefore, the total internal volume E of the conventional example is C + D = 2000 liters.

On the other hand, when water is used as the cold storage material of this embodiment, the internal volume D of the hot water supply tank is 200 liters, which is equivalent to the hot water supply load in summer, and the total internal volume E is C + D = 1.
This is 800 liters, which is 200 liters less than the conventional example. The reason why the total internal volume E is less than 200 liters is that the internal volume C of the cold storage tank is determined by the internal volume A of the cold storage tank, and the difference from the internal volume B of the thermal storage tank is 60 in winter.
This is because the heat energy equivalent to 0 liters is left over, so that part or all of this heat energy can be used for hot water supply (C = A when A ≧ B, C = B when A <B, E = C).
+ D). However, it is necessary to secure a minimum hot water storage amount of 200 liters equivalent to the summer hot water supply load for hot water supply in summer.

In FIG. 14, when ice and water are used as the regenerator material and water is used as the regenerator material in this embodiment, the volume A of the regenerator is 1
The volume is 200 liters, the hot water tank internal volume D is 200 liters, and the total internal volume E is 1400 liters, which is 400 liters smaller than the conventional example. This is about 1 ice making rate during cold storage
Although it is set to 0%, even if the ice making rate is further increased, it does not fall below 1400 liters, which is the sum of the heat storage tank internal volume B: 1000 liters and the hot water supply load equivalent hot water storage amount: 400 liters.

FIGS. 15 to 17 show a second embodiment of the present invention. FIG. 15 is an overall configuration diagram of an air conditioner and FIG. 16 is a refrigeration cycle configuration diagram thereof. Outdoor unit 7
7 is two indoor units 77A and 77B and a refrigerant pipe 79A
And 79B, and the cold storage heat water supply device 81 is connected by a refrigerant pipe 83, respectively. The cold storage hot water supply apparatus 81 includes a cold storage heat hot water supply heat exchanger 85 to which the refrigerant pipe 83 is connected, and a cold storage heat hot water supply tank unit 87 in which water is used for cold storage heat and hot water supply.

The refrigeration cycle structure is as shown in FIG.
A compressor 89 that compresses and discharges the refrigerant, two four-way valves 91 and 93 that change the flow direction of the refrigerant depending on operating conditions such as heating operation and cooling operation, and indoor heat exchange that functions as a condenser during heating and an evaporator during cooling. Vessels 95A and 95B,
On the contrary, the outdoor heat exchanger 97, which serves as an evaporator during heating and serves as a condenser during cooling, and the cold storage hot water supply tank unit 87.
And the electronic expansion valves 99, 101, 103, 105, 1 which serve as a condenser during heat storage for increasing the water temperature and serve as an evaporator during cold storage for lowering the water temperature.
It is mainly composed of 07. Note that reference numeral 10
Reference numerals 9, 111, 113, 115 and 117 are open / close valves. Various operations of the air conditioner having such a refrigeration cycle configuration are performed in the same manner as in the first embodiment.

The cold storage hot water supply tank unit 87 shown in detail in FIG. 17 includes three water tanks 119, 121 and 123 which can be used as both the cold storage heat supply tank and the hot water supply tank, and a water pump 125.
And the electric three-way valves 127, 129, 131, 133, 13 as switching means for switching the water tanks 119, 121, 123 to either the cold storage heat tank or the hot water supply tank.
5, 137, 139. The water tank 123 is provided with a heater 141 that operates to heat when storing heat.

Water pipes P1 to P19 are attached to the water tanks 119, 121 and 123, and water is supplied through the water pipe P1 while hot water is supplied through the water pipe P19. Water tanks 119, 121, 123 and cold storage hot water supply heat exchanger 85
Is connected by water pipes P13 and P14, and has a structure in which water heated or cooled by the cold storage heat supply hot water heat exchanger 85 is conveyed by a water pump 125. The electric three-way valves 127, 129, 1 of the cold storage hot water supply tank unit 87
By operating 31, 133, 135, 137, 139 to switch the water flow path, the three water tanks 1
Alternately use 19, 121, 123 every day. The method is shown below.

First, the operation system and operation route in the summer will be described. In this case, the water tank 119 is used as a cold storage tank,
The water tanks 121 and 123 are used as hot water supply tanks. When hot water is used, the electric three-way valves 127 and 129 are used to supply water to the water tank 121 via the water pipes P1, P3 and P5, and hot water is used from the hot water in the water tank 121.
When the hot water in the water tank 121 is used up, an electric 3-way valve 127
Is activated to connect the water pipes P1 and P2 to the water tank 123.
The water in the water tank 123 is used to supply hot water.

The electric three-way valves 131, 133, 13 are used when the water tank 119 used as a cold storage tank is used for cold storage or cold storage.
5,137,139, water pipes P6, P8, P1
0, P12, P13, P14, P16, P18 are joined. In this state, water is supplied to the water pipe P1 by the pump 125.
Sent to the 3 side and sent to the cold storage hot water supply heat exchanger 85,
Here, the water that has been cooled by the refrigerant flowing through the refrigerant pipe 83 to become cold water is conveyed to the water tank 119 through the water pipes P14, P16, and P18.

When the water tank 121 of the hot water supply tank and the water tank 119 of the cold storage tank shown above are used up in one day, the hot water supply tanks are changed to the water tanks 119 and 123 and the cold storage tank is changed to the water tank 121 on the next day. To do. The use method in this case is similar to the above, when using hot water, the electric three-way valves 127, 1
Water is supplied to the water tank 119 via the water pipes P1, P3, P4 by 29, and hot water is used from the hot water of the water tank 119. When the hot water in the water tank 119 is used up,
The electric three-way valve 127 is operated to join P1 and P2, and the hot water in the water tank 123 is used to supply hot water. When storing cold water in the water tank 121 of the cold storage tank or using the cold storage, the electric three-way valves 131, 1
33, 135, 137, 139, and water pipes P7, P
8, P10, P12, P13, P14, P16, P17
And the water is sent to the side of the water pipe P13 for conveyance using the water pump 125.

When the water tank 121 of the hot water supply tank and the water tank 119 of the cold storage tank cannot be used up in one day, the hot water supply tank and the cold storage tank are used as they are on the next day.

Next, the operation system and operation route in winter will be shown. In this case, three water tanks 119, 121, 1
23 is used as a hot water supply tank. When using hot water, electric 3
Water can be supplied to the water tank 119 via the water pipes P1, P3 and P4 by way valves 127 and 129, and hot water is used from the hot water of the water tank 119. When the hot water in the water tank 119 has been used up, the electric three-way valve 129 is activated and the water pipe P
1, P3 and P5 are joined so that water can be supplied to the water tank 121, and hot water is supplied from the water tank 121. Furthermore, when the hot water in the water tank 121 is used up, the electric 3-way valve 1
27 is operated, the water pipes P1 and P2 are joined, and the water tank 12
The hot water of the water tank 123 is supplied so that water can be supplied to the water tank 3.

A water tank 119 or 121 used as a hot water supply tank is used as the heat storage tank. This is because the water tank of the hot water supply tank in which hot water remains is used as a heat storage tank. When using the water tank 119 as a heat storage tank,
Using electric three-way valves 135, 137, 139, P11, P
12, P13, P14, P16, and P18 are joined, and water is sent to the water pipe P13 side and conveyed by using the water pump 125. When the water tank 121 is used as a heat storage tank, electric three-way valves 135, 137, 139 are used, and P1
1, P12, P13, P14, P16, P17 are joined, and water is sent to the water pipe P13 side and conveyed by using the water pump 125.

Normally, when a hot water supply tank is installed, the hot water supply amount differs in summer and winter, but as in the second embodiment, the three water tanks 119, 121, 123 are switched by the electric three-way valve switching operation. By switching between the cold heat storage tank and the hot water supply tank for use, the size of the hot water supply tank is not wasted, and the installation space can be reduced. In addition, the water tanks 119, 121, and 123 are hot water supply tanks,
Since it can be used alternately as a cold heat storage tank every day, the water used as a cold heat storage material is prevented from spoiling, and the water tanks 119 and 12 are used in the spring and autumn seasons when indoor air conditioning is not often performed.
By using 1,123 as the hot water supply tank, there is no unnecessary cold storage heat storage tank, so the water tanks 119, 12
1,123 can be effectively used and waste can be eliminated.

[0032]

As described above, according to the present invention, the cold storage heat tank capable of storing and storing the heat of the refrigerant in the refrigeration cycle therein by the cold storage heat material, and the inside of the cold storage heat tank. Since the hot water supply tank capable of supplying the hot water by introducing the heat of the cold storage heat material through the refrigerant is incorporated in the refrigeration cycle, the cooling and heating capacity and the hot water supply capacity are maintained at a predetermined level, with the cold storage heat tank. The total internal volume of the hot water supply tank can be reduced, and the installation space can be reduced.

Further, according to the present invention, a plurality of water tanks can be used by appropriately switching between the cold heat storage tank and the hot water supply tank by the switching operation of the switching means, which may waste the size of the hot water supply tank. In addition, the installation space can be reduced.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram of an air conditioner showing a first embodiment of the present invention.

FIG. 2 is a refrigeration cycle configuration diagram of the air conditioner of FIG.

FIG. 3 is an operation explanatory view of the refrigeration cycle of FIG. 2 during a cold storage operation.

FIG. 4 is an operation explanatory diagram during a cold storage hot water heating operation of the refrigeration cycle of FIG. 2.

FIG. 5 is an operation explanatory view of the refrigeration cycle of FIG. 2 during a cooling operation using cooling storage.

FIG. 6 is an operation explanatory view of the refrigeration cycle of FIG. 2 during normal cooling operation.

7 is an operation explanatory view of the refrigeration cycle of FIG. 2 during heat storage operation.

8 is an operation explanatory view of the refrigeration cycle of FIG. 2 during a heat storage hot water heating operation.

9 is an operation explanatory view of the refrigeration cycle of FIG. 2 during a heating operation using heat storage.

FIG. 10 is an operation explanatory view of the refrigeration cycle of FIG. 2 during normal heating operation.

11 is an operation explanatory diagram during hot water supply heating operation of the refrigeration cycle in FIG. 2. FIG.

FIG. 12 is an overall configuration diagram of an air conditioner when the number of indoor units is two in addition to the air conditioner of FIG. 1.

FIG. 13 is a refrigeration cycle configuration diagram of the air conditioner of FIG. 12.

FIG. 14 is an explanatory diagram showing a total internal volume of the cold storage tank and the hot water supply tank in comparison between the air conditioner of FIG. 12 and the air conditioner of the conventional example.

FIG. 15 is an overall configuration diagram of an air conditioner showing a second embodiment of the present invention.

FIG. 16 is a refrigeration cycle configuration diagram of the air conditioner of FIG. 15.

FIG. 17 is an overall configuration diagram of a cold storage hot water supply unit in the air conditioner of FIG. 15.

FIG. 18 is a refrigeration cycle configuration diagram of an air conditioner showing a conventional example.

FIG. 19 is a cross-sectional view of an electric water heater used as a hot water supply tank showing a conventional example.

[Explanation of symbols]

21 Cold Storage Heat Tank 25 Hot Water Supply Tank 29 Heat Storage Heat Exchanger 33 Hot Water Supply Heat Exchanger 37,89 Compressor 43,95A, 95B Indoor Heat Exchanger 45,97 Outdoor Heat Exchanger 85 Cold Storage Heat Supply Hot Water Heat Exchanger (Heat Exchanger) 119, 121, 123 Water tanks (hot water supply tank, cold storage tank) 127, 129, 131, 133, 135, 137, 1
39 Electric 3-way valve (switching means)

 ─────────────────────────────────────────────────── ─── Continuation of the front page (71) Applicant 000156938 Kansai Electric Power Co., Inc. 3-3-22 Nakanoshima, Kita-ku, Osaka-shi, Osaka (71) Applicant 000211307 Chugoku Electric Power Co., Inc. 4-33 Komachi, Naka-ku, Hiroshima-shi, Hiroshima No. (71) Applicant 000180368 Shikoku Electric Power Co., Inc. Marunouchi No. 2-5, Takamatsu City, Kagawa Prefecture (71) Applicant 000164438 Kyushu Electric Power Co., Inc. 2-82 Watanabe-dori, Chuo-ku, Fukuoka City, Fukuoka Prefecture (71) Applicant 000003078 Toshiba Corporation 72 Horikawa-cho, Saiwai-ku, Kawasaki-shi, Kanagawa Prefecture (72) Inventor Katsuyuki Tanuma 3-7-1, Ichibancho, Aoba-ku, Sendai-shi, Miyagi Tohoku Electric Power Co., Inc. (72) Osamu Iwase Tokyo Chiyoda 1-3-3 Saichocho, Uchi-ku, Tokyo Electric Power Co., Inc. (72) Inventor, Kuniyuki Ito, 1 Higashishinmachi, Higashi-ku, Nagoya-shi, Aichi Chubu Electric Power Co., Inc. (72) Person Yoshii Takai 15-1 Ushijima-cho, Toyama City, Toyama Prefecture Hokuriku Electric Power Company (72) Inventor Hideo Nakamura 3-3-22 Nakanoshima, Kita-ku, Osaka City, Osaka Prefecture Kansai Electric Power Co., Inc. (72) Inventor Ikebe Kiyoshi Hiroshima Prefecture 4-3, Komachi, Naka-ku, Hiroshima-shi, Chugoku Electric Power Co., Inc. (72) Inventor Yoshihiro Mita 2-5 Marunouchi, Takamatsu City, Kagawa Prefecture Shikoku Electric Power Company (72) Inventor Fengbun Ito, Fukuoka City, Fukuoka Prefecture 2-82 Watanabe-dori, Chuo-ku, Kyushu Electric Power Co., Inc. (72) Inventor Katsuaki Yamagishi 8 Shinsugita-cho, Isogo-ku, Yokohama-shi, Kanagawa Kanagawa, Ltd. (72) Inventor, Takashi Doi Kanagawa 8th Shinsugita-cho, Isogo-ku, Yokohama-shi, Ltd. Inside Toshiba Housing and Spatial System Technology Research Institute (72) Inventor Hirokazu Yamaguchi 8th Shin-sugita-cho, Isogo-ku, Yokohama, Kanagawa Prefecture

Claims (2)

[Claims] 1. An air conditioner comprising a refrigeration cycle including a compressor, an indoor heat exchanger, an outdoor heat exchanger, etc., wherein a refrigerant in the refrigeration cycle and water, which is a cold heat storage material, stored therein. And a cold storage heat tank capable of storing and storing heat in water by exchanging heat with a heat exchanger, and hot water supply capable of supplying hot water by exchanging heat between the refrigerant and water in the refrigeration cycle in the heat exchanger. An air conditioner, wherein a tank is incorporated in the refrigeration cycle, and heat energy of water, which is a cold storage heat material in the cold storage heat tank, is used for cooling and heating and hot water supply. 2. In an air conditioner provided with a refrigeration cycle including a compressor, an indoor heat exchanger, an outdoor heat exchanger, etc., a refrigerant in the refrigeration cycle and water introduced from a plurality of water tanks. A heat exchanger that exchanges heat between
The plurality of water tanks are a hot water supply tank that supplies water that has been heated by the heat exchanger to become hot water, and a cold storage heat that transfers the heat energy of the internal water to the refrigerant on the refrigeration cycle side in the heat exchanger. An air conditioner characterized in that it is connected to a tank by piping so that it can be switched by a switching means.