JPH0814676A - Air conditioner - Google Patents

Abstract

PURPOSE:To perform a convection air conditioning and a radiation air conditioning concurrently under a relative simple cycle configuration. CONSTITUTION:In an air conditioner comprising a first utilization side heat exchanger 20 having a compressor 1 and a heat source side heat exchanger 3 outside and also having an indoor fan 22 inside a room and a second utilization side heat exchanger 30 provided with heat accumulation material 31, a compressor 1 is operated under no air conditioning state to store heat in heat accumulating material 31 arranged in the second utilization side heat exchanger 30 and when the air conditioning is carried out both a convection air conditioning with the first utilization heat exchanger 20 and the radiation air conditioning with the heat accumulation material 31 are carried out under an operation of the compressor 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner, and more particularly, to an air conditioner which combines two air conditioning systems of convection air conditioning and radiant air conditioning having different temperature levels.

[0002]

2. Description of the Related Art A device for performing convection air conditioning and radiant air conditioning in one air conditioner is, for example, Japanese Patent Laid-Open No. 5-288428.
The air conditioner described in the publication can be mentioned.
FIG. 5 shows a cycle configuration diagram of this air conditioner. In FIG. 5, 51 is a compressor, 52 is a four-way switching valve, and 53 is a first
Utilization side heat exchangers 54 and 56 are first and second, respectively.
A throttle device, 55 is an intermediate heat exchanger for exchanging heat between the refrigerant and the second medium, 57 is a heat source side heat exchanger, 58 is an accumulator, 59 is a bypass pipe, and a flow control valve 60 that can be fully closed in the middle thereof. Is provided and is connected so as to bypass the first utilization side heat exchanger 53 and the first expansion device 54. Then, a cycle in which these are connected by a refrigerant pipe to circulate the refrigerant is configured. Further, 62 is a second utilization side heat exchanger, 61 is a pump, which is connected to the intermediate heat exchanger 55 by a pipe, and constitutes a cycle for circulating the second medium.

In the air conditioner having the above structure,
For example, when the first use side heat exchanger 53 is used as a convection air conditioning unit and the second use side heat exchanger 62 is used as a radiant air conditioning unit, if the circulation of the second medium is stopped, the convection air conditioning becomes independent and the second medium is used. It is possible to perform convective air conditioning and radiant air conditioning in combination by circulating.

[0004]

By the way, when convection air conditioning and radiant air conditioning are performed by one air conditioner, two air conditioning systems having different temperature levels are combined, so that a complicated cycle configuration and control configuration are required. Will be needed. Also in the above-mentioned conventional example, the two expansion devices 54 and 56 and the bypass pipe 5 are provided.
9. A complicated cycle configuration using the on-off valve 60 is adopted.

The present invention has been made to solve the above-mentioned conventional drawbacks, and an object thereof is to provide an air conditioner capable of simultaneously performing convection air conditioning and radiation air conditioning with a relatively simple cycle structure. To do.

[0006]

Therefore, an air conditioner according to claim 1 has a compressor 1 and a heat source side heat exchanger 3 outdoors.
First use-side heat exchanger 20 having indoor fan 22 provided indoors
And a second usage-side heat exchanger 30 provided with the heat storage material 31, in the heat storage material 31 provided in the second usage-side heat exchanger 30 by operating the compressor 1 during non-air conditioning. However, during air conditioning, convection air conditioning by the first usage side heat exchanger 20 that operates the compressor 1 and radiation air conditioning by the heat storage material 31 are used together.

The air conditioner of claim 2 is the compressor 1,
A heat pump cycle 11 in which a heat source side heat exchanger 3 and an expansion mechanism 5 are sequentially connected to circulate a refrigerant, a first usage side heat exchanger 20 and a second usage side heat exchanger 30 are connected to circulate a second medium. Second medium circulation cycle 42 that is piped to
And an intermediate heat exchanger 40 for exchanging heat between the refrigerant and the second medium.

The air conditioner of claim 3 further comprises a heat pump cycle 12 for circulating the refrigerant by sequentially connecting the compressor 1, the heat source side heat exchanger 3, the expansion mechanism 5, and the first utilization side heat exchanger 20, A second medium circulation cycle 42 arranged to circulate the second medium in the second utilization side heat exchanger 30, and the intermediate heat exchanger 40 for exchanging heat between the refrigerant and the second medium. It is characterized in that it is connected in parallel to the first use side heat exchanger 20.

An air conditioner according to a fourth aspect of the present invention includes a first heat pump cycle 14 for circulating a refrigerant by sequentially connecting a compressor 1, a heat source side heat exchanger 3, an expansion mechanism 5 and a first utilization side heat exchanger 20. The second heat pump cycle 15 for circulating the refrigerant by sequentially connecting the compressor 1, the heat source side heat exchanger 3, the expansion mechanism 6, and the second utilization side heat exchanger 30.

An air conditioner according to a fifth aspect is characterized in that the heat storage operation is performed at midnight.

The air conditioner of claim 6 is characterized in that the second medium is water.

An air conditioner according to a seventh aspect of the present invention is the heat storage material 31.
Is characterized by configuring at least one of a floor heat storage panel and a ceiling heat storage panel.

[0013]

In the air conditioner of the above-mentioned claim 1, since the heat storage material 31 is provided in the second utilization side heat exchanger 30, the compressor 1 is operated during non-air conditioning to store the heat storage material 31 in advance. When,
During air conditioning, both convective air conditioning by the first utilization side heat exchanger 20 that operates the compressor 1 and radiant air conditioning by radiating or cooling the heat storage material 31 can be performed simultaneously.

Further, in the air conditioner of claim 2, since the heat storage material 31 is provided in the second utilization side heat exchanger 30, the compressor 1 is operated during non-air conditioning, and the intermediate heat exchanger 40 heats the refrigerant and heat. The second medium that has been exchanged and heated or cooled can be circulated in the pipe to store heat in the heat storage material 31. Moreover, in the air conditioner according to claim 2, the heat storage material 3 in which heat is stored
It is possible to simultaneously perform the convection / radiation air conditioning by one and the convection / radiation air conditioning in which the operation of the compressor 1 is combined. In the former case, radiant air-conditioning performed by radiating or cooling the above-mentioned heat storage material 31 that has previously stored heat, and circulating the second medium heated or cooled by the heat storage material 31 in the second medium circulation cycle 42, This is convection air conditioning performed by operating the indoor fan 22 in the first usage-side heat exchanger 20. In the latter case, the second medium heated or cooled by operating the compressor 1 and exchanging heat with the refrigerant in the intermediate heat exchanger 40 is used as the first use side heat exchanger 20 and the second use side heat exchanger. 2nd with 30 connected
Radiant air-conditioning that is circulated in the medium circulation cycle 42 and radiates or cools in the second usage-side heat exchanger 30;
This is convection air conditioning performed by operating the indoor fan 22 in the use side heat exchanger 20. In the convection air conditioning in the latter case, since the second medium is heated or cooled by the heat storage material 31 that has previously stored heat, the rising of cooling and heating becomes faster.

When a plurality of second heat exchangers 30 on the use side are installed, the pipe length becomes long, and the heat storage material 3
If a refrigerant is made to act directly on 1, a large amount of refrigerant is required accordingly, but the air conditioner according to claim 2 is provided with the intermediate heat exchanger 40 and the pipe to which the second utilization side heat exchanger 30 is connected. Since the second medium that has exchanged heat with the refrigerant in the intermediate heat exchanger 40 is circulated therein, the amount of refrigerant charged into the heat pump cycle 11 can be reduced.

Further, in the air conditioner of claims 3 and 4, both convection air conditioning and radiant air conditioning by radiating or cooling the heat storage material 31 can be simultaneously performed in the same manner as described above. In the air conditioner, similar to the above,
It is possible to reduce the amount of refrigerant charged in the entire cycle.

In the air conditioner of claims 5 and 6,
It is possible to reduce running costs and equipment costs. Claim 7 exemplifies a preferred embodiment of the present invention.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, specific embodiments of the air conditioner of the present invention will be described in detail with reference to the drawings. FIG. 1 is a cycle configuration diagram showing a first embodiment. In FIG.
1 is a compressor, 2 is a four-way switching valve, 3 is a heat source side heat exchanger, 4
Is an accumulator, 5 is an electric expansion valve, 40 is an intermediate heat exchanger for exchanging heat between a refrigerant and water, and these are connected in order by a refrigerant pipe to form a heat pump cycle 1 for refrigerant circulation.
Make up one. Further, 20 is the first use side heat exchanger, 3
Reference numeral 0 is a second utilization side heat exchanger, 41 is a pump, which are connected to the intermediate heat exchanger 40 by a pipe to form a water circulation cycle 42. That is, it is a cycle configuration in which two cycles 11 and 42 in which the refrigerant for the heat pump and the water (second medium) circulate are combined so as to exchange heat via the intermediate heat exchanger 40.

In the above cycle configuration, during heating operation, the compressor 1, the four-way switching valve 2, the intermediate heat exchanger 40 serving as a condenser, the electric expansion valve 5, and the heat source side heat exchanger serving as an evaporator. 3. The refrigerant is circulated in the order of 3, the four-way switching valve 2, and the accumulator 4, and the pump 41 is further activated, and the intermediate heat exchanger 40, the first usage-side heat exchanger 20, and the second usage-side heat exchanger 30 are arranged in order. Water is circulated while exchanging heat with the refrigerant in the heat exchanger 40.

During the cooling operation, the compressor 1, the four-way switching valve 2, the heat source side heat exchanger 3 serving as a condenser, the electric expansion valve 5, the intermediate heat exchanger 40 serving as an evaporator, the four-way switching valve 2,
The refrigerant is circulated in the order of the accumulator 4, and the pump 41 is further activated.
0, 1st utilization side heat exchanger 20, 2nd utilization side heat exchanger 30
In this order, water is circulated while exchanging heat with the refrigerant in the intermediate heat exchanger 40.

In FIG. 1, reference numeral 21 denotes an indoor unit casing, inside which the first utilization side heat exchanger 20 and the indoor fan 22 are provided, and these constitute an indoor unit. Further, 33 is a floor plate, 34 is a heat transfer plate, and 32 is a casing in which the heat storage material 31 is enclosed. By bringing the surface of the pipe 42 and the casing 32 into contact with each other via the heat transfer plate 34, the second utilization side The heat exchanger 30 is formed, and these together form a floor heat storage panel.
For the heat storage material, CaCl ₂ .6H ₂ O (melting point 29.7 ° C.),
An anhydrous salt such as Na ₂ SO ₄ · 10H ₂ O (melting point 32.4 ° C.) added with a coagulation temperature lowering agent or a phase separation inhibitor is used. Regarding the water circulating through the pipe 42,
First thermistor 23 for temperature measurement at the indoor unit outlet
And a second thermistor 35 for measuring the temperature at the heat storage panel outlet.

Next, each operation pattern of heating and cooling in the first embodiment configured as described above will be described. First, Table 1 describes operation patterns of heating operation. In the heating heat storage mode, the compressor 1 and the pump 41 are turned on to store heat in the heat storage material 31 of the heat storage panel. Then, when the measured temperature of the second thermistor 35 reaches 35 ° C., the heat storage ends. In this mode, heat can be stored at a low running cost by operating at night with electric power. In the radiant heating mode A, floor heating is performed by radiating heat from the heat storage material 31 that has stored heat in the heating heat storage mode. In the radiant heating mode B, the pump 41 and the indoor fan 22 are turned on, and the water warmed by the heat storage material 31 stored in the heating heat storage mode is circulated in the water circulation cycle 42 by the pump 41, and the indoor fan 2 of the indoor unit 2
Operate 2 to perform ventilation heating. In this mode B, the indoor unit can be installed in a room where the heat storage material 31 is not laid under the floor to perform ventilation heating. In the floor heating mode in the heating mode, when the temperature of the heat storage material 31 is low, the compressor 1 and the pump 41 are turned on, and the water circulation cycle 4
Floor heating is performed by circulating high-temperature water inside 2. In the blast heating mode in the heating mode, the compressor 1, the pump 41, and the indoor fan 22 are turned on to perform blast heating. In this mode, the heat storage material 31 that has stored heat in the heating heat storage mode
As a result, the circulating water in the water circulation cycle 42 is heated, which has the advantage that the heating starts up quickly. In this mode, the operating frequency (compression capacity) of the compressor 1 is controlled by the room temperature, the rotation speed of the indoor fan 22, and the temperature measured by the first thermistor 23.

[0023]

[Table 1]

Table 2 shows the cooling operation pattern. In the cooling cold storage mode, the compressor 1 and the pump 41 are turned on to store cold heat in the heat storage material 31 of the heat storage panel (hereinafter referred to as cold storage). Then, when the measured temperature of the second thermistor 35 reaches 15 ° C., the cold storage is ended. Similar to the heating / heat storage mode, a low running cost can be achieved in this mode as well by storing the cold power at night.
In the cooling / cooling mode A, floor cooling is performed by cooling the heat storage material 31 stored in the cooling / cooling storage mode. If the radiation amount is small and the room temperature rises even though there is a cold storage amount, the cooling / cooling mode B is applied. In the cooling / cooling mode B, the pump 41 and the indoor fan 22 are turned on, and the water cooled by the heat storage material 31 stored in the cooling / cooling storage mode is circulated in the water circulation cycle 42 by the pump 41, and the indoor fan of the indoor unit is cooled. 22 is operated to perform air-conditioning at the same time as floor cooling. In the floor cooling mode in the cooling mode, the compressor 1 and the pump 41 are turned on to allow the cooling water having a temperature lower than the cooling temperature to flow in the water circulation cycle 42 to perform radiation cooling. In the blast cooling mode in the cooling mode, the compressor 1, the pump 41, and the indoor fan 22 are turned on to perform blast cooling. Similar to the blast heating mode, in this mode as well, the circulating water in the water circulation cycle 42 is cooled by the heat storage material 31 stored in the cooling / cooling storage mode. In this mode, cooling is performed while controlling the indoor unit outlet temperature (the temperature of the first thermistor 23).

[0025]

[Table 2]

By the way, when radiant cooling and heating are performed at the same temperature, the solidification temperature range of the heat storage material 31 is 22 to 27 ° C.
Must be The solidification temperature of the heat storage material 31 is around 22 ° C. when the annual air conditioning load is cooling> heating, around 25 ° C. when cooling ≈ heating, and around 27 ° C. when cooling <heating. Also, depending on the air conditioning load such as the area and the thermal performance of the house, a single heat storage material 31 is used for the heat storage panel (also used for cooling and heating), or a heat storage material 31 having a solidification temperature of 22 ° C is used for the ceiling cold storage panel (for cooling), A heat storage material having a solidification temperature of 27 ° C. may be used for a floor heat storage panel (for heating) to mix both.

As described above, in the air conditioner of the first embodiment, convection air conditioning and radiant air conditioning can be performed at the same time without the need for a complicated cycle structure as in the prior art. Further, by storing heat in the heat storage material 31 by using the nighttime electric power, it is possible to perform convection air conditioning and radiation air conditioning during the daytime at low running costs. Further, when the heat is stored in the heat storage material 31, the water circulating in the pipe 42 is heated or cooled, so that the convection air conditioning operation (blower cooling / heating mode) starts up faster and the comfort is increased.

FIG. 2 is a cycle configuration diagram showing a second embodiment. The same parts as those in the above embodiment are designated by the same reference numerals, and the description thereof will be omitted. In FIG. 2, 5 and 6 are respectively the first
And the second electric expansion valve, but in this embodiment,
A first heat pump cycle 12 in which the compressor 1, the four-way switching valve 2, the heat source side heat exchanger 3, the accumulator 4, the first electric expansion valve 5 and the first use side heat exchanger 20 are connected by a refrigerant pipe to circulate a refrigerant. , Compressor 1, heat source side heat exchanger 3,
A second heat pump cycle 13 in which the accumulator 4, the second electric expansion valve 6, and the intermediate heat exchanger 40 are connected by a refrigerant pipe to circulate a refrigerant, the intermediate heat exchanger 40, the pump 41, and a second utilization side heat exchanger. A water circulation cycle 42 that circulates water between the intermediate heat exchanger 40 and the second heat exchanger 30 on the second side by connecting the pipes 30 is configured. The intermediate heat exchanger 40 has the second heat pump cycle 13
And the water (second medium) circulating in the water circulation cycle 42 is heat-exchanged. Further, the first use-side heat exchanger 20 is provided with an indoor fan (not shown), and the second use-side heat exchanger 30 is provided with a heat storage material 31 to form a floor heat storage panel. .

In the cycle configuration as described above, the compressor 1, the four-way switching valve 2, the first utilization side heat exchanger 20 serving as a condenser, and the first electric expansion valve 5 in the first heat pump cycle 12 during blast heating. , A heat source side heat exchanger 3 serving as an evaporator, a four-way switching valve 2, and an accumulator 4 are circulated in order, and a compressor 1, a four-way switching valve 2, and a heat source serving as a condenser in a first heat pump cycle during blast cooling. The refrigerant is circulated in the order of the side heat exchanger 3, the first electric expansion valve 5, the first utilization side heat exchanger 20 serving as an evaporator, the four-way switching valve 2, and the accumulator 4.

During nighttime heat storage and radiant heating operation, the second
In the heat pump cycle 13, the compressor 1, the four-way switching valve 2, the refrigerant and water exchange heat, the intermediate heat exchanger 40 serving as a condenser, the second electric expansion valve 6, and the heat source side heat exchanger serving as an evaporator. 3, 4-way switching valve 2, accumulator 4
Circulate the refrigerant in the order of, and further activate the pump 41,
Water that has exchanged heat with the refrigerant in the intermediate heat exchanger 40 is circulated between the intermediate heat exchanger 40 and the second usage-side heat exchanger 30. During nighttime cold storage and radiant cooling operation, in the second heat pump cycle 13, the compressor 1, the four-way switching valve 2, the heat source side heat exchanger 3 serving as a condenser, the second electric expansion valve 6, and the intermediate heat serving as an evaporator. The refrigerant is circulated in the order of the exchanger 40, the four-way switching valve 2, and the accumulator 4, and the pump 41 is further activated.
Water that has exchanged heat with the refrigerant in the intermediate heat exchanger 40 is circulated between the use-side heat exchangers 30.

In the second embodiment, since the refrigerant circulation control can be performed in both cycles, the blower cooling / heating operation and the radiant air conditioning operation can be performed individually or simultaneously. Further, similarly to the first embodiment, by storing heat in the heat storage material 31 by using nighttime electric power, radiation air conditioning can be performed in the daytime at low running cost.

FIG. 3 is a cycle configuration diagram showing a third embodiment. The same parts as those in the above embodiment are designated by the same reference numerals, and the description thereof will be omitted. In FIG. 3, reference numerals 7, 8, 9 and 10 denote first, second, third and fourth on-off valves, respectively. In the air conditioner of the second embodiment, the electric expansion valves 5 and 6 were connected for each heat pump cycle, whereas in the cycle configuration of this air conditioner, both heat pump cycles 1
One electric expansion valve 5 is connected to the refrigerant pipe shared by 2 and 13, and the on-off valves 7, 8, 9 and 10 are connected to the heat pump cycles 12 and 13, respectively. In the cycle configuration of this air conditioner, unlike the air conditioner of the second embodiment, it is not possible to control the circulation of the refrigerant in both heat pump cycles at the same time. The heat storage material 31 is used to store heat, the air-blower cooling / heating operation is performed during actual use, and the radiant air conditioning is performed by radiating or cooling the heat storage material 31.

FIG. 4 is a cycle configuration diagram showing a fourth embodiment. The same parts as those in the above embodiment are designated by the same reference numerals, and the description thereof will be omitted. In this air conditioner, the compressor 1, the four-way switching valve 2, the heat source side heat exchanger 3, the accumulator 4, the first
A first heat pump cycle 14 in which the electric expansion valve 5 and the first use-side heat exchanger 20 are connected by a refrigerant pipe to circulate a refrigerant.
And a compressor 1, a four-way switching valve 2, a heat source side heat exchanger 3, an accumulator 4, a second electric expansion valve 6, a second utilization side heat exchanger 30 are connected by a refrigerant pipe to circulate a refrigerant. It constitutes cycle 15. Like this
In the embodiment, unlike the above embodiment, the second utilization side heat exchanger 30 provided with the heat storage material 31 constituting the floor heat storage panel is directly provided in the second heat pump cycle 15 without the intermediate heat exchanger 40. The cycle structure is the simplest in the embodiments.

In the cycle configuration as described above, during the blast heating operation, in the first heat pump cycle 14, the compressor 1, the four-way switching valve 2, the first utilization side heat exchanger 20 serving as a condenser, and the first electric expansion. The refrigerant is circulated in the order of the valve 5, the heat source side heat exchanger 3 serving as an evaporator, the four-way switching valve 2, and the accumulator 4, and the compressor 1, the four-way switching valve 2, in the first heat pump cycle 14 during the air-blower cooling operation. The refrigerant is circulated in the order of the heat source side heat exchanger 3, which serves as a condenser, the first electric expansion valve 5, the first usage side heat exchanger 20, which serves as an evaporator, the four-way switching valve 2, and the accumulator 4. During the night heat storage operation and the radiant heating operation, the second heat pump cycle 1
5, a compressor 1, a four-way switching valve 2, a second utilization side heat exchanger 30 serving as a condenser, a second electric expansion valve 6, a heat source side heat exchanger 3 serving as an evaporator, a four-way switching valve 2, and an accumulator 4 In the second heat pump cycle 15, during the nighttime cold storage operation and the radiant cooling operation, the refrigerant is circulated in the order of
The compressor 1, the four-way switching valve 2, the heat source-side heat exchanger 3 that serves as a condenser, the second electric expansion valve 6, the second usage-side heat exchanger 30 that serves as an evaporator, the four-way switching valve 2, and the accumulator 4 are refrigerant in this order. Circulate. In the cycle configuration of this air conditioner, since the first and second electric expansion valves 5 and 6 are connected to each of the heat pump cycles 14 and 15, respectively, both heat pumps are provided as in the air conditioner of the second embodiment. Cycle 1
Refrigerant circulation control can be performed in Nos. 4 and 15, and the blast cooling / heating operation and the radiant air conditioning operation can be performed individually or simultaneously. Further, similarly to the air conditioner of the above-mentioned embodiment, by storing heat in the heat storage material 31 by using nighttime electric power, radiant air conditioning can be performed in the daytime at low running cost.

[0035]

As described above, in the air conditioner of the first aspect, since the heat storage material is provided in the second heat exchanger on the side of use for performing radiant air conditioning, the compressor is operated during non-air conditioning to store the heat storage material. If heat is stored in advance, both convection air conditioning by the first utilization side heat exchanger that operates the compressor and radiation air conditioning by radiating or cooling the heat storage material can be performed at the same time during air conditioning. Therefore, it is possible to simplify the system configuration and the control configuration as compared with the conventional method while performing comfortable air conditioning.

Further, in the air conditioner of the second aspect, the radiation air conditioning and the convection air conditioning can be simultaneously performed in the same manner as described above. Further, when the compressor is operated to perform air conditioning, if the heat storage material is pre-stored with heat, the second medium circulating in the pipe is heated or cooled, so that the convection air conditioning starts up faster. In addition, the amount of refrigerant charged in the entire cycle can be reduced.

Further, in the air conditioner of claims 3 and 4, both convection air conditioning and radiant air conditioning by radiating or cooling the heat storage material can be performed at the same time, as described above.
Further, in the air conditioner according to the third aspect, the amount of the refrigerant to be filled in the entire cycle can be reduced.

In the air conditioner of claims 4 and 5,
It is possible to reduce running costs and equipment costs. Claim 7 exemplifies a preferred embodiment of the present invention.

[Brief description of drawings]

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

FIG. 2 is a cycle configuration diagram showing a second embodiment of the air conditioner of the present invention.

FIG. 3 is a cycle configuration diagram showing a third embodiment of the air conditioner of the present invention.

FIG. 4 is a cycle configuration diagram showing a fourth embodiment of the air conditioner of the present invention.

FIG. 5 is a cycle configuration diagram showing a conventional example.

[Explanation of symbols]

 1 Compressor 3 Heat source side heat exchanger 5 1st electric expansion valve 6 2nd electric expansion valve 11 Heat pump cycle 12 1st heat pump cycle 13 2nd heat pump cycle 14 1st heat pump cycle 15 2nd heat pump cycle 20 2nd use side heat Exchanger 22 Indoor fan 30 Second heat exchanger on the utilization side 31 Heat storage material 40 Intermediate heat exchanger 42 Water circulation cycle

Claims (7)

[Claims] 1. A first use side heat exchanger (20) having a compressor (1) and a heat source side heat exchanger (3) outside, and an indoor fan (22) inside the room, and a heat storage material. In an air conditioner having a second usage-side heat exchanger (30) provided with (31), heat storage provided in the second usage-side heat exchanger (30) by operating the compressor (1) during non-air conditioning. The first utilization side heat exchanger (2) that stores heat in the material (31) and operates the compressor (1) during air conditioning
An air conditioner characterized by using both convection air conditioning by (0) and radiation air conditioning by a heat storage material (31). 2. A compressor (1), a heat source side heat exchanger (3),
A heat pump cycle (11) in which expansion mechanisms (5) are sequentially connected to circulate a refrigerant, and a first utilization side heat exchanger (2)
0) and the second utilization side heat exchanger (30) are connected to each other and the second medium circulation cycle (4) is arranged to circulate the second medium.
2. The air conditioner according to claim 1, further comprising: an intermediate heat exchanger (40) for exchanging heat between the refrigerant and the second medium. 3. A compressor (1), a heat source side heat exchanger (3),
A heat pump cycle (12) in which an expansion mechanism (5) and a first utilization side heat exchanger (20) are sequentially connected to circulate a refrigerant.
And a second medium circulation cycle (42) in which a second medium is circulated in the second utilization side heat exchanger (30), and intermediate heat for exchanging heat between the refrigerant and the second medium. The air conditioner according to claim 1, wherein the exchanger (40) is connected in parallel to the first utilization side heat exchanger (20). 4. A compressor (1), a heat source side heat exchanger (3),
A first heat pump cycle (1) in which an expansion mechanism (5) and a first utilization side heat exchanger (20) are sequentially connected to circulate a refrigerant.
4), the compressor (1), the heat source side heat exchanger (3), the expansion mechanism (6), the second utilization side heat exchanger (30).
And a second heat pump cycle (15) for sequentially circulating the refrigerant to connect the air conditioners, the air conditioner according to claim 1. 5. The air conditioner according to claim 1, wherein the heat storage operation is performed at midnight. 6. The air conditioner according to claim 1, wherein the second medium is water. 7. The air conditioner according to claim 1, wherein the heat storage material (31) constitutes at least one of a floor heat storage panel and a ceiling heat storage panel. .