JP2001349639A - Heat recovery and heat storage type cooling and heating hot/cold water supply device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat recovery and heat storage type cooling and heating hot/cold water supply device which can simultaneously manage operations such as a heat recovery, ice heat storage, air-conditioning by a secondary side refrigerant, a secondary side cold/hot water type air-conditioning, a cold/hot water type floor cooling and heating and a hot water supply by one system. SOLUTION: Since a heat pump circuit is provided with first to third heat exchangers respectively serving as evaporators or condensers, a cooling operation in the summer, an ice storage operation in the summer, a heating operation in the winter and a heat storage operation in the winter can be performed as required. Cold water or hot water can be stored in a heat storage water tank or a heat recovery tank by a water or refrigerant circulating circuit. The cold water or hot water stored in these water tanks is supplied to the heat exchangers for refrigerant of a refrigerant circulating, cooling and heating device so that a cooling or heating operation can be carried out. A cooling and heating operation, a floor cooling and heating operation, a hot water supply and a cold water supply in hotels, hospitals, welfare facilities, super-bathhouses and the like can be simultaneously managed and operated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling and heating system, and a cooling and heating system for supplying hot and cold water and a cooling water system.

[0002]

2. Description of the Related Art Conventionally, various types of cooling / heating devices or hot water / hot water supply devices have been used for air conditioning, floor cooling / heating, hot / cold water, and hot / cold water in hotels, hospitals, welfare facilities, super public baths, and the like. .

[0003] For example, in a cooling and heating system called a central ice storage system, a heat pump is operated using inexpensive nighttime electric power at night when there is no demand for cooling and heating.
In summer, in the heat exchanger that acts as an evaporator, a coil pipe is installed in the ice heat storage water tank, and the brine antifreeze is cooled by heat exchange with the circulation circuit through the brine antifreeze. In the heat exchanger which acts as a condenser in the winter, heats the brine antifreeze by heat exchange with the circulation circuit passing through the brine antifreeze, and turns the water in the ice heat storage water tank into hot water. In the cooling and heating operation, cold or hot water is circulated to an air-conditioning indoor unit provided on the indoor side by a cold and hot water pipe provided between the inside of the ice heat storage tank.

[0004] In a system called an ice-Bimaru ice storage system or a direct-expansion-type Birmar system, during nighttime heat storage, in the summer, ice is made by a coil passing through a water tank, and the refrigerant is made in the daytime. The heat is exchanged with the air-conditioning indoor unit by transferring the compressor to the inside of the coil to cool the air-conditioning unit. In winter, the water in the water tank is heated with hot water in the same manner.

[0005] Regarding floor cooling and heating, a heat pump system is used, and hot water is circulated in a pipe buried in the floor by a water supply pump in winter and cold water in summer. Some hot water supply systems use a heat pump to supply hot water.

[0006]

As described above, a hotel,
Air conditioning and heating, floor air conditioning and heating of hospitals, welfare facilities, super public baths, etc.
With regard to hot and cold water, various types of cooling and heating devices or hot water supply devices according to the respective demands are mixed, and the heat source units are installed individually and are not linked and linked, and of course there is no comprehensive heat recovery, Operation management and maintenance management are extremely complicated and energy loss is large. In addition, it is difficult to meet complicated demands such as a case where cooling and heating or hot and cold water are simultaneously required in one facility.

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems in various types of large-scale buildings such as cooling and heating, floor cooling and heating, hot and cold water supply and cooling water systems. The object of the present invention is to provide a heat recovery type regenerative heat storage type heating / cooling water supply / water supply system capable of centrally managing and operating demands for secondary side refrigerant air conditioning, secondary side cooling / heating water type air conditioning, chilled / hot water floor cooling / heating and hot water supply. And

[0008]

According to the first aspect of the present invention, there is provided a heat recovery type regenerative cooling / heating / hot water supply system for water supply, comprising: a first heat exchanger (14) acting as a condenser or an evaporator; A second heat exchanger (16) acting as a heat exchanger and a third heat exchanger (1) acting as a condenser or evaporator.
8) and a closed circuit in which each of the heat exchangers is connected via a switching valve, an on-off valve, a check valve, and an expansion valve to circulate a working medium, and is connected in the closed circuit to compress the working medium. And a compressor (12) circulating in the closed circuit, wherein the three-way valve (22) of the switching valves forming the closed circuit has an inlet port (22a) connected to the compressor (12). 12) The discharge port (12) of the working medium pressurized by
a), the first port (22b) is a four-way valve (2
The circuit connected to the inlet port (24a) of 4) and connected to the second port (22c) is branched into two circuits,
One of the circuits has a first connection port (14) of the first heat exchanger (14) into which the working medium flows directly via the on-off valve (40).
a) and the other circuit is connected to the first heat exchanger (16) of the second heat exchanger (16) through which the working medium flows directly via the on-off valve (38).
The four-way valve (24) of the switching valves that are connected to the connection port (16a) and constitute the closed circuit is an inlet port (24a).
And a first port (24b) and a second port (24c)
And a third port (22d), and the inlet port (24a) communicates with either the first port (24b) or the third port (24d) of the outlet ports, and the second port (24d). Port (24c) is configured to communicate with a first or third port (24b or 24d) not communicated with the inlet port (24a), and the first port (24b) of the four-way valve (24). Is connected to the first connection port (18a) of the third heat exchanger (18) into which the working medium flows directly, and the second port (24c) is connected to the suction port (12b) of the compressor (12). And the circuit connected to the third port (24d) branches into two circuits,
One of the circuits is connected to the circuit from the three-way valve (22) via the on-off valve (48) and is connected to the first connection port (14a) of the first heat exchanger (14) into which the working medium flows directly. The other circuit is connected to the first connection port (16a) of the second heat exchanger (16) through the on-off valve (50), which merges with the circuit from the three-way valve (22) and into which the working medium flows directly. A first expansion valve (26) having a first check valve 28 in a bypass circuit for preventing the working medium from flowing into a second connection port (14b) of the first heat exchanger (14). A circuit having an on-off valve 42 interposed is connected, and a second check valve (32) for preventing the working medium from flowing into the second connection port (16a) of the second heat exchanger (16) is bypassed. A second expansion valve (30) in the circuit is connected to a circuit interposed with an on-off valve (44), and a second heat exchanger (18) is connected to a second heat exchanger (18). The connection port (18b) is connected to a third expansion valve (34) having a third check valve (36) in a bypass circuit for preventing the inflow of the working medium in a bypass circuit and a circuit interposed with an on-off valve (46). At the same time, the three circuits communicate with each other, and the first heat exchanger (14) and the heat storage water tank (52)
A first circulation circuit (5) for connecting an ice heat storage coil tube (54) immersed in a closed circuit and circulating a heat exchange medium between them.
5), the second heat exchanger (16) and the heat recovery tank (5).
8), a second circulation circuit (65) for circulating a heat exchange medium therebetween, and a blower (20) for radiating or absorbing heat from the third heat exchanger (18). It is characterized by the following.

According to a second aspect of the present invention, in the summer cooling operation of the heat recovery type heat storage / cooling / heating / hot water supply system according to the first aspect, the three-way valve (22) is used. The inlet port (22a) is connected to the second port (22
c), the open / close valve (40) of one of the two branched circuits connected to the second port (22b) is closed, so that the working medium compressed by the compressor (12) is closed. The first connection port (16) of the second heat exchanger (16) is connected via the three-way valve (22) and the on-off valve (38).
a), the heat exchanger (16) acts as a condenser, and heat is exchanged with a heat exchange medium circulated by the second circulation circuit (65) to the heat recovery tank (58) as hot water. The working medium that recovers heat and flows out of the second connection port (16b) of the second heat exchanger (16) passes through the second check valve (32) and the on-off valve (44). By closing the on-off valve (46) toward the third heat exchanger (18), a working medium passes through the on-off valve (42) and the first expansion valve (26), and The working medium expanded under reduced pressure is injected into the second connection port (14b) of the heat exchanger (14), the first heat exchanger (14) acts as an evaporator, and the first circulation circuit (55) ), The ice storage coil tube (54) is exchanged with the heat exchange medium circulated by And the heat storage water tank (52) and cooled, closed off valve (50) and said four-way valve (24)
By connecting the third port (24d) and the second port (24c), the working medium discharged from the first connection port (14a) of the first heat exchanger (14) is transferred to the compressor ( A closed circuit for returning to 12) is formed.

According to a third aspect of the present invention, there is provided a heat recovery type regenerative heat storage type cooling / heating / hot water supply system according to the first aspect of the present invention, wherein the three-way valve (22) is used in the ice storage operation in summer. Of the first port (22)
b), the first port (22b) is connected to the inlet port (24a) of the four-way valve (24), and the inlet port (22a) of the four-way valve (24) is connected to the first port (2).
4b), the working medium compressed by the compressor (12) is supplied to the three-way valve (22) and the four-way valve (2).
By injecting into the first connection port (18a) of the third heat exchanger (18) via 4), it acts as a condenser, and the generated heat is radiated to the atmosphere by the blower (20). , The second connection port (1) of the third heat exchanger (18).
8b) from the third check valve (3)
6) and the on-off valve (46).
By closing 4), the gas passes through the on-off valve (42) and the first expansion valve (26), and is decompressed and expanded to the second connection port (14b) of the first heat exchanger (14). The first heat exchanger (14) acts as an evaporator, and the first heat exchanger (14) acts as an evaporator. 54), the heat storage water tank (52) is cooled, the on-off valve (50) is closed, and the third valve of the four-way valve (24) is closed.
The port (24d) communicates with the second port (24c) to allow the working medium discharged from the first connection port (14a) of the first heat exchanger (14) to pass through the compressor (1).
A closed circuit for returning to 2) is formed.

According to a fourth aspect of the present invention, there is provided a heat recovery type heat storage / cooling / heating / hot water supply / water supply system according to the first aspect of the present invention, wherein the three-way valve (22) is used in a heating operation in winter. The inlet port (22a) is connected to the second port (22
c), the open / close valve (38) of the other circuit that is connected to the second port (22c) and branched into two is closed, so that the working medium compressed by the compressor (12) is closed. A first connection port (14) of the first heat exchanger (14) through the three-way valve (22) and the on-off valve (40);
a), the first heat exchanger (14) acts as a condenser, and the heat storage water tank (52) is exchanged with a heat exchange medium circulated by the first circulation circuit (55).
Heat as hot water to the first heat exchanger (14)
The working medium flowing out of the second connection port (14b) passes through the first check valve (28) and the on-off valve (42) and passes through the second heat exchanger (16) or the third heat exchanger. The branch point of the circuit leading to (18) is reached, but the third heat exchanger (18)
By closing the on-off valve (46) of the circuit leading to the valve, the working medium is supplied to the on-off valve (44) and the second expansion valve (3).
0), the working medium expanded under reduced pressure is injected into the second connection port (16b) of the second heat exchanger (16), and the second heat exchanger (16) acts as an evaporator. Then, the heat recovery tank (58) is cooled by heat exchange with a heat exchange medium circulated by the second circulation circuit (65), the on-off valve (48) is closed, and the four-way valve (24) is closed. By connecting the third port (24d) and the second port (24c), the first connection port (1) of the second heat exchanger (16) is connected.
A closed circuit for returning the working medium discharged from 6a) to the compressor (12) is formed.

According to a fifth aspect of the present invention, there is provided a heat recovery type heat storage / cooling / heating / hot water supply / water supply system according to the first aspect of the present invention, wherein the three-way valve (22) is operated in a heat storage operation in winter. The inlet port (22a) is connected to the second port (22
c), the open / close valve (38) of the other circuit that is connected to the second port (22c) and branched into two is closed, so that the working medium compressed by the compressor (12) is closed. A first connection port (14) of the first heat exchanger (14) through the three-way valve (22) and the on-off valve (40);
a), the first heat exchanger (14) acts as a condenser, and the heat storage water tank (52) is exchanged with a heat exchange medium circulated by the first circulation circuit (55).
Heat as hot water to the first heat exchanger (14)
The working medium flowing out of the second connection port (14b) passes through the first check valve (28) and the on-off valve (42) and passes through the second heat exchanger (16) or the third heat exchanger. The branch point of the circuit leading to (18) is reached, but the second heat exchanger (16)
By closing the on-off valve (44) of the circuit leading to, the working medium passes through the on-off valve (46) and the third expansion valve (34), and the working medium passes through the third heat exchanger (18). The working medium that has been decompressed and expanded is injected into the connection port (18b) of the second valve, the third heat exchanger (18) acts as an evaporator, and heat is absorbed from the atmosphere by blowing air from the blower (20). (24) The first port (24b) and the second port
To form a closed circuit for returning the working medium discharged from the first connection port (18a) of the third heat exchanger (18) to the compressor (12) by communicating with the port (24c). It is characterized by the following.

According to a sixth aspect of the present invention, there is provided a heat recovery type heat storage / cooling / heating / hot water supply system according to any one of the first to fifth aspects. The heat exchange medium circulated by the circuit (55) is brine antifreeze, and the heat exchange medium circulated by the second circulation circuit (65) is water.

[0014]

In the heat pump of the heat recovery type regenerative heating / cooling / heating / water supply system of the first aspect, the first to third heat exchangers are connected to a three-way valve, a four-way valve, an on-off valve and a check valve by a bypass circuit. Connected using an expansion valve to form a closed circuit in which the working medium is circulated by the compressor, a three-way valve,
By switching or opening and closing the four-way valve and the on-off valve, the first to third heat exchangers act as condensers or evaporators, and constitute a summer cooling circuit, a summer ice storage circuit, a winter heating circuit, and a winter heat storage circuit. can do. for that reason,
As a heat recovery type heat storage type cooling / heating hot / cold water supply device, it is possible to meet complicated requirements such as a case where cooling and heating or a supply of hot water and a supply of cooling water are simultaneously required in one system.

In the summer cooling operation of the second aspect, by switching or opening and closing the three-way valve, the four-way valve and the on-off valve, the second heat exchanger acts as a condenser and circulates through the second circulation circuit. Heat is recovered as hot water in the heat recovery tank by heat exchange with the heat exchange medium, the first heat exchanger is operated as an evaporator, and the ice storage coil is exchanged with the heat exchange medium circulated by the first circulation circuit. Cool the heat storage tank via the pipe.

According to the third aspect of the present invention, the operating medium compressed by the compressor is injected into the third heat exchanger by switching or opening and closing the three-way valve, the four-way valve and the on-off valve. And the heat generated by the blower is radiated to the atmosphere, and the working medium that has been decompressed and expanded is injected into the first heat exchanger to act as an evaporator and heat with the heat exchange medium circulated by the first circulation circuit. By the replacement, ice is stored on the surface of the ice storage coil tube in the storage tank and the storage tank is cooled.

According to the fourth aspect of the present invention, in the winter heating operation, the working medium compressed by the compressor is injected into the first heat exchanger by switching or opening and closing the three-way valve, the four-way valve and the on-off valve. Since the heat exchanger acts as a condenser to radiate heat, heat is exchanged with the heating medium circulated by the connected first circulation circuit to recover heat as hot water in the heat storage water tank. Further, after passing through the second expansion valve, the working medium that has been decompressed and expanded is injected into the second heat exchanger and acts as an evaporator, so that the heat recovery tank is cooled by the connected cooling medium circulation circuit. You.

In the winter heat storage operation of the present invention, the working medium compressed by the compressor is injected into the first heat exchanger by switching or opening and closing the three-way valve, the four-way valve and the on-off valve. Since the heat exchanger acts as a condenser to release heat, the working medium compressed by the compressor is injected into the first heat exchanger to act as a condenser, and the heat exchange with the heat exchange medium circulated by the first circulation circuit. By the exchange, the heat storage water tank is heated and stored through the ice heat storage coil tube. Further, the working medium that has been decompressed and expanded is injected into the third heat exchanger and acts as an evaporator, and is discharged into the atmosphere as cool air by the blower.

According to the sixth aspect of the present invention, water may be used as a heat exchange medium circulating through a first circulation circuit circulating between the heat storage water tank and the first heat exchanger. Since the ice layer can be accumulated around the pipe, the heat storage amount can be increased.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One preferred embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing a schematic configuration of an embodiment of the present invention. A first circulation circuit 55 for circulating a refrigerant between the heat pump 10 and the heat storage water tank 52 is connected to the heat pump 10, and a second circulation circuit 65 for circulating hot water or cold water between the heat pump 10 and the heat recovery tank 58. Is connected. A pipe header 62 or 64 is connected to the heat storage water tank 52 and the heat recovery tank 58, respectively. Via the pipe header, a coolant circulation heat exchange device 71 or a hot water pool, a public bath, floor cooling / heating, hot water, Hot water or cold water is sent to equipment 57 such as cooling water, and the cold water or hot water that has undergone heat exchange is returned to the original piping header 62 or 64 by the condenser tube 96.

FIG. 2 is an enlarged configuration diagram of the heat pump of the present invention. Discharge port 12a of compressor 12 of heat pump 10
Is connected to the inlet port 22a of the three-way valve 22, the first port 22b of the three-way valve 22 is connected to the inlet port 24a of the four-way valve 24, and the second port 22c of the three-way valve 22
Are connected to a circuit leading to a first heat exchanger 14 and a second heat exchanger 16.

The circuit connected to the second port 22c of the three-way valve 22 is branched into two circuits, one of which is a circuit leading to the second heat exchanger 16, and which is an electromagnetic on-off valve 38. The tip is connected to a circuit connecting the first connection port 16 a through which the working medium flows directly into and out of the second heat exchanger 16 and the third port 24 d of the four-way valve 24. Also,
The other branched circuit is a circuit leading to the first heat exchanger 14, and has an electromagnetic on-off valve 40 interposed therebetween, and the distal end thereof is connected to the first heat exchanger 14.
In the circuit connecting the first connection port 14a through which the working medium flows directly into and out of the heat exchanger 14 and the third port 24d of the four-way valve 24.

The circuit connecting the first connection port 16a of the second heat exchanger 16 and the third port 24d of the four-way valve 24 has one end connected to the first connection port of the first heat exchanger 14. 14a, an electromagnetic opening / closing valve 48 is provided on the first heat exchanger 14 side, and an electromagnetic on / off valve 48 is provided on the second heat exchanger 16 side before the merging point. An on-off valve 50 is provided. When the working medium recirculates from this circuit, the third port 24 d and the second port 24
The working medium that has communicated with the third port 24c and circulated to the third port 24d flows back to the suction port 12b of the compressor 12 via a circulating circuit of the working medium connected to the second port 24c.

The third heat exchanger 18 includes a blower 20. When the third heat exchanger 18 functions as a condenser, the third heat exchanger 18 radiates heat due to liquefaction of the working medium into the atmosphere and functions as an evaporator. Sometimes, heat from vaporization is absorbed from the atmosphere. The distal end of a circuit connected to the first connection port 18a through which the working medium of the third heat exchanger 18 directly enters and exits is connected to the first port 24b of the four-way valve 24. If the working medium directly recirculates from the third heat exchanger, the four-way valve 2
The fourth first port 24b communicates with the second port 24c, so that the working medium circulated to the first port 24b passes through the circulating circuit connected to the second port 24c, and the suction port of the compressor 12 Reflux to 12b.

The second connection port 14b of the first heat exchanger 14
Is connected to a first expansion valve 26 having a bypass provided with a check valve 28 and a circuit provided with an electromagnetic on-off valve 42, and this circuit is connected to a first connection port of the third heat exchanger 18. 18a. In addition, the first heat exchanger 14
Is connected to a first heat exchanger 14 and an ice heat storage coil tube 54 immersed in a heat storage water tank 52, and a first circulation circuit 55 for circulating a heat exchange medium therebetween is connected to the second heat exchanger 14; The second heat exchanger 16 is connected to a second circulation circuit 65 which connects the second heat exchanger 16 and the heat recovery tank 58 and circulates a heat exchange medium between the two.

In order for the heat pump having the above configuration to perform the cooling operation in summer, in FIG. 3, the inlet port 22a of the three-way valve 22 and the second port 22c are communicated,
Closing the solenoid on-off valve 40 of the circuit leading to the heat exchanger 14 of
The electromagnetic on-off valve 46 provided in a circuit extending from the second connection port 18b of the third heat exchanger 18 to the second heat exchanger 16 and the first heat exchanger 14 is closed, and the four-way valve 24 2
Port 24c and the third port 24d. The first connection port 16a of the second heat exchanger 16 and the third port of the four-way valve
The solenoid on-off valve 50 of the circuit connecting the port 24d is closed.

When the compressor 12 is operated in this state, the compressed working medium exits through the discharge port 12a of the compressor, passes through the second port 22c from the inlet port 22a of the three-way valve 22, and is opened and closed. Through the valve 38, a circuit connecting the second heat exchanger 16 and the third port 24d of the four-way valve 24 is reached. However, since the solenoid on-off valve 50 is closed, the compressed working medium is supplied to the first connection port 1 of the second heat exchanger 16.
6a flows into the second heat exchanger 16. Therefore, the second heat exchanger 16 acts as a condenser to radiate heat, so that heat is recovered as hot water in the heat recovery tank 58 by the heating medium circulation circuit 65 connected to the second heat exchanger 16.

The working medium condensed and liquefied in the second heat exchanger 16 is supplied to the second connection port 16 of the second heat exchanger.
b, which has a check valve 32 in the bypass circuit.
Check valve 32, the second heat exchanger 1
6, the working medium passes through the check valve 32 provided in the bypass and passes through the solenoid on-off valve 44 to the third position.
To the circuit connecting the second connection port 18b of the second heat exchanger 18 to the second heat exchanger 16 and the first heat exchanger 14. However, since the solenoid on-off valve 46 is closed, the working medium flows toward the first heat exchanger 14, passes through the solenoid on-off valve 42, and has a first expansion having a bypass circuit provided with the check valve 28. The valve 26 is reached.

The check valve 28 has a working medium of the first heat exchanger 1
The working medium passes through the first expansion valve 26 because it acts to prevent it from flowing into 4. The working medium that has passed through the first expansion valve 26 and decompressed and expanded is injected into the second connection port 14b of the first heat exchanger 14, and the first heat exchanger 14 acts as an evaporator to absorb heat. The cooling medium circulating in the first cooling medium circulation circuit 55 connected to the first heat exchanger 14 is cooled by heat exchange with the working medium, and the heat storage water tank 52 is cooled.

The working medium that has passed through the first heat exchanger 14 flows out of the first connection port 14a into a circuit extending to the third port 24d of the four-way valve 24. Electromagnetic switching valve 4 for this circuit
The working medium is an electromagnetic on-off valve 50 provided in a circuit connecting the second heat exchanger 16 and the terminal d of the four-way valve.
Is closed, the working medium flows into the third port 24d of the four-way valve. In the four-way valve 24, a third port 24d and a second port 24c communicate with each other, and a working medium is supplied to the third port 24c through the suction port 1 of the compressor 12.
Since the recirculation circuit for returning to 2b is connected, the working medium is recirculated to the compressor 12 by the recirculation circuit.

The ice storage operation in summer will be described with reference to FIG. 4. In the three-way valve 22, the inlet port 22a and the first port 22b communicate with each other.
The inlet port 24a communicates with the first port 24b, and the second port 24c communicates with the third port 24d. In a circuit from the second connection port 18b of the third heat exchanger 18 to the second heat exchanger 16 and the first heat exchanger 14, a circuit to the branched second heat exchanger 16 is provided. The provided electromagnetic switching valve 44 is closed. Also, the electromagnetic on-off valve 50 provided in the circuit connecting the first connection port 16a of the second heat exchanger 16 and the third port 24d of the four-way valve is closed.

The working medium compressed by the compressor 12 is
It flows out from the discharge port 12a of the compressor 12, passes through the first port 22b from the inlet port 22a of the three-way valve 22, and reaches the inlet port 24a of the four-way valve 24. In the four-way valve 24, since the inlet port 24a and the first port 24b communicate with each other, the compressed working medium is supplied to the first port 24b.
Flows through the circuit connecting the first heat exchanger 18 and the first connection port 18 a of the third heat exchanger 18, and flows into the third heat exchanger 18.

The working medium injected into the third heat exchanger 18 generates heat due to condensation and liquefaction and acts as a condenser. Third
The heat generated in the heat exchanger 18 is radiated to the atmosphere by operating the blower 20. Third heat exchanger 18
The working medium flowing out of the second connection port 18b flows into a circuit connected to the first heat exchanger 14 and the second heat exchanger 16.

Although this circuit is provided with an expansion valve 34 having a check valve 36 in the bypass, the check valve 36 allows the working medium flowing in the direction flowing out of the third heat exchanger 18 to pass therethrough. , The working medium bypasses the third expansion valve 34, bypasses the third expansion valve 34, passes through the check valve 36, passes through the electromagnetic on-off valve 46,
A branch point leading to the second heat exchanger 16 is reached. But second
Since the electromagnetic on-off valve 44 of the circuit reaching the heat exchanger 16 is closed, it passes through this branch point and the first heat exchanger 14
To the circuit that leads to

This circuit is provided with an electromagnetic on-off valve 42 and a first expansion valve 26 having a check valve 28 in a bypass. The working medium that has passed through the electromagnetic on-off valve 42 in the open state is:
A first expansion valve 26 having a check valve 28 in the bypass is reached. The check valve 28 acts to block the working medium flowing into the first heat exchanger 14 so that the working medium passes through the first expansion valve 26. By passing through the first expansion valve 26, the working medium decompressed and expanded is injected into the second connection port 14b of the first heat exchanger 14, the working medium evaporates and the first heat exchanger 14 Since the heat absorbing function is performed as an evaporator, the cooling medium circulating through the cooling medium circulation circuit 55 connected to the first heat exchanger 14 is cooled by heat exchange with the working medium, and the ice storage coil tube 54 in the heat storage water tank 52 is cooled. Ice is stored on the surface and the heat storage water tank 52 is cooled.

The working medium that has passed through the first heat exchanger 14 flows out of the first connection port 14a into a circuit extending to the third port 24d of the four-way valve 24. In this circuit, a circuit reaching the second port 22c of the three-way valve 22 is branched with an electromagnetic on-off valve 40 interposed.
Since c is in the closed state, the working medium goes straight, passes through the electromagnetic on-off valve 48, and joins a circuit connecting the first connection port 16a of the second heat exchanger and the third port 24d of the four-way valve 24. . However, since the electromagnetic on-off valve 50 is closed, it flows into the third port 24d of the four-way valve 24. In the four-way valve 24, the terminal d and the terminal c communicate with each other, and the terminal c is connected to a circulation circuit for returning the working medium to the suction port 12b of the compressor 12. Circulates to the suction port 12 b of the compressor 12.

In the winter heating operation, as shown in FIG. 5, the inlet port 22a of the three-way valve 22 and the second port 2
The solenoid on-off valve 38 of the circuit communicating with the second heat exchanger 16 and reaching the second heat exchanger 16 is closed. Further, the electromagnetic on-off valve 46 interposed in the circuit from the first heat exchanger 14 and the second heat exchanger 16 to the third heat exchanger 18 is closed. In addition, four-way valve 2
The fourth port 24c and the third port 24d are connected to each other.

The working medium compressed by the compressor 12 is
It flows into the inlet port 22a of the three-way valve 22 from the discharge port 12a. Inlet port 22a of the three-way valve 22 and the second port 2
2c is in communication with the second port 2
It flows into a circuit leading to the first heat exchanger 14 or the second heat exchanger 16 connected to 2c. This circuit branches into a circuit leading to the first heat exchanger 14 and a circuit leading to the second heat exchanger 16, and the electromagnetic switching valve 38 provided in the circuit leading to the second heat exchanger 16 is closed. Therefore, the working medium passes through the electromagnetic on-off valve 40, flows into the circuit leading to the first heat exchanger 14, and joins the circuit connecting the first heat exchanger 14 and the four-way valve 24. Electromagnetic switching valve 48 provided in this circuit
Is closed, the working medium is supplied to the first heat exchanger 14.
To the first connection port 14a of the first heat exchanger 14.
From the first heat exchanger 14.

In the first heat exchanger 14, the working medium is condensed and liquefied and radiates heat as a condenser. Therefore, heat exchange with the heat exchange medium circulated by the first circulation circuit 55 is performed through the ice heat storage coil tube 54. The heat storage water tank 52 is heated. First
The working medium that has radiated heat in the heat exchanger 14 and heated the heating medium by heat exchange flows out from the second connection port 14b and flows into a circuit that reaches the second heat exchanger 16.

The circuit extending from the second connection port 14b to the second heat exchanger 16 is provided with a first expansion valve 26 having a check valve 28 as a bypass. Since the valve 28 serves to pass the working medium flowing out of the first heat exchange 14, the working medium passes through the check valve 28,
It passes through the electromagnetic on-off valve 42 and flows toward the third heat exchanger 18. However, since the solenoid on-off valve 46 provided in the circuit toward the third heat exchanger 18 is closed, it enters the circuit leading to the second heat exchanger 16 provided at a branch point therebetween.

The circuit includes an electromagnetic on-off valve 44 and a check valve 32
A second expansion valve 30 having a bypass provided with a solenoid valve is provided because the check valve 32 is set so as to block the working medium flowing into the second heat exchanger 16. The working medium that has exited the second expansion valve heat exchanger 14 from 44 passes through the second expansion valve 30 and passes through the second connection port 16 b of the second heat exchanger 16 into the second heat exchanger 16. To enter.

The working medium injected into the second heat exchanger 16 absorbs heat by evaporation and vaporization.
Acts as an evaporator, and heat is recovered as cold water in the heat recovery tank 58 by heat exchange with the heat exchange medium circulated by the heating medium circulation circuit 65 connected to the second heat exchanger 16.

The working medium that has passed through the second heat exchanger 16 flows out of the circuit from the first connection port 16a to the third port 24d of the four-way valve 24. In this circuit, the circuit from the second port 22c of the three-way valve in which the electromagnetic on-off valve 38 is interposed, and the first heat exchanger 1
4 is connected to the first connection port 14a, but the electromagnetic on-off valve 38 and the electromagnetic on-off valve 48 are closed, and the electromagnetic on-off valve 50 is open. It passes through the on-off valve 50 and flows into the third port 24d of the four-way valve 24. In the four-way valve 24, the third port 24d communicates with the second port 24c,
The working medium is supplied to the inlet port 12
Since the recirculation circuit for returning to b is connected, the working medium is recirculated to the suction port 12b of the compressor 12 by the recirculation circuit.

Next, the winter heat storage circuit will be described with reference to FIG.
And the second port 22c communicate with each other. In the four-way valve 24, the first port 24b and the second port 24c communicate with each other. As for the solenoid on-off valve, the solenoid on-off valve 38 in the circuit from the second port 22c of the three-way valve 22 to the second heat exchanger, and connects the first heat exchanger 14 with the third port 24d of the four-way valve 24. The electromagnetic on-off valve 48 of the circuit and the electromagnetic on-off valve 44 of the circuit from the second heat exchanger 16 to the third heat exchanger 18 are closed.

In the winter heat storage operation, the working medium compressed by the compressor 12 flows into the three-way valve 22 through a circuit connecting the discharge port 12a and the inlet port 22a of the three-way valve 22. In the three-way valve 22, since the inlet port 22a and the second port 22c communicate with each other, the compressed working medium flows from the second port 22c to the first heat exchanger 14 or the second heat exchanger. Flow into the circuit leading to 16.

In this circuit, since the electromagnetic on-off valve 38 provided in the circuit flowing into the second heat exchanger 16 is closed, the working medium passes through the electromagnetic on-off valve 40 and the first heat exchanger 14 And the circuit connecting the third port 24d of the four-way valve to the first port 14a of the first heat exchanger 14 because the electromagnetic on-off valve 48 provided in this circuit is closed. From the first heat exchanger 14.

In the first heat exchanger 14, the working medium is condensed and liquefied and radiates heat as a condenser. Therefore, heat exchange with the heat exchange medium circulated by the first circulation circuit 55 is performed through the ice heat storage coil pipe 54. The heat storage water tank 52 is heated. First
The working medium that has radiated heat in the heat exchanger 14 of the second
And enters a circuit from the connection port 14b to the third heat exchanger 18.

This circuit is provided with a first expansion valve 26 provided with a check valve 28 in a bypass circuit and an electromagnetic on-off valve 42, and the check valve 28 flows out of the first heat exchanger 14. Since the working medium is allowed to pass, the working medium passes through the check valve 28, passes through the opened electromagnetic on-off valve 42, and enters a circuit toward the third heat exchanger 18.

The circuit to the third heat exchanger 18 branches off from the circuit to the second heat exchanger 16, and a third opening valve provided with a solenoid valve 46 and a check valve 36 in the bypass. Is provided. Since the electromagnetic on-off valve 44 provided in the circuit that branches from this circuit toward the second heat exchanger 16 is closed, the working medium that has passed through the electromagnetic on-off valve 42 travels straight and passes through the electromagnetic on-off valve 46. Thus, the flow reaches the third expansion valve 34 in which the check valve 36 is provided in the bypass. Check valve 36
Prevents the working medium from flowing into the third heat exchanger 18, so that the working medium flows through the third expansion valve 34 and flows into the second connection port 18 b of the third heat exchanger 18.

The working medium injected into the third heat exchanger 18 absorbs heat due to evaporation and vaporization.
Acts as an evaporator and is released into the atmosphere as cool air by a blower. The working medium that has passed through the third heat exchanger 18 is supplied from the first connection port 18a to the first port 24 of the four-way valve.
b, and flows into the first port 24 of the four-way valve 24.
b. In the four-way valve 24, the first port 24b
And the second port 24c are in communication with each other, so that a recirculation circuit for returning the working medium to the suction port 12b of the compressor 12 is connected to the terminal c. To the suction port 12b.

Next, the cooling water supply and hot water supply devices of the apparatus of the present invention will be described. FIG. 7 is a configuration diagram of the cooling water / hot water supply apparatus of the present invention. The heat storage water tank 52 accommodates an ice heat storage coil tube 54 through which a heat exchange medium circulates. At both ends of the ice heat storage coil tube 54, a heat exchange medium is connected to the first heat exchanger 14 by a circulation pump 56. The first to circulate between
Are connected. Also, the heat storage water tank 52
Is filled with circulating water. At the bottom of the heat storage water tank 52, a heat storage water tank pipe header 62 composed of a forward pipe 62a and a return pipe 62b for circulating hot water or cold water in the heat storage water tank 52 is attached.

The heat recovery tank 58 is filled with water as a heat exchange medium, and water as the heat exchange medium circulates between the heat recovery tank 58 and the second heat exchanger 16 in a second circulation circuit. 6
5 is provided, and the heat exchange water is circulated by a water circulation pump 60 provided in the second circulation circuit. Further, the cold water or hot water in the heat recovery tank 58 is provided at the bottom of the heat recovery tank 58 with an outward pipe 64 for circulating the hot water or cold water in the heat recovery tank 58.
a heat recovery tank piping header 64 composed of a and a return pipe 64b
Is attached.

Outgoing pipe 6 of pipe header 62 of heat storage water tank 52
A first water supply pipe 90 branches off from 2a, and a second water supply pipe 92 branches off from the outward pipe 64a of the pipe header 64 of the heat recovery tank 58. A first condensing pipe 82 is connected to the return pipe 62b of the pipe header 62 of the heat storage water tank 52, and a return pipe 64b of the pipe header 64 of the heat recovery tank 58.
Is connected to a second condenser 84. The distal end of the first condenser pipe 82 is connected to the first port 8 of the first condenser three-way valve 86.
6a, and the distal end of the second condensing pipe 84 is connected to the third port 86c of the first condensing three-way valve 86. The second port 86b of the first condensate three-way valve 86 is
The connection is made to either the first port 86a or the third port 86c.

The second port 86 of the first condensing three-way valve 86
b, a third condensing pipe 88 is connected, and cold water or hot water of the heat storage water tank 52 or the heat recovery tank 58 selected by the first condensing three-way valve 86 is attached to a water supply circuit 96 described later. The water circulation pump 68 allows the cooling / heating water circulating in the refrigerant heat exchanger (not shown) of the refrigerant circulation cooling / heating device 71 to recirculate.

The water supply pipe 6 of the pipe header 62 of the heat storage water tank 52
The first water supply pipe 90 branches off from 2a, and the second water supply pipe 92 branches off from the water supply pipe 64a of the pipe header 64 of the heat recovery tank 58. The distal end of the first water supply pipe 90 is connected to the first port 94a of the first water supply three-way valve 94, and the distal end of the second water supply pipe 92 is connected to the third port of the first water supply three-way valve 94. 94c. The second port 94b of the first water supply three-way valve 94 is connected to the first port 9
4a or the third port 94c.

The second port 94 of the first water supply three-way valve 94
b, a third water supply pipe 96 for supplying water to a refrigerant heat exchanger (not shown) of the refrigerant circulation cooling / heating device 71 is attached, and a circulation pump 68 attached to the water supply pipe 96 supplies a refrigerant to the refrigerant heat exchanger. Cold or hot water is supplied. The cold water or hot water heat-exchanged by the refrigerant heat exchanger is returned to the second port 86b of the first condensing three-way valve 86 by the third condensing pipe 88. The second of the first condensate three-way valve 86
Port 86b communicates with either the first port 86a or the third port 86c, but the first water supply three-way valve 94 removes the first or second hot water from the heat storage water tank 52 in order to take out hot or cold water. When the port 94a and the second port 94b communicate with each other, the cold water or hot water circulating from the refrigerant heat exchanger (not shown) is returned to the original heat storage water tank 52 by the first heat storage water tank 52.
First condensing three-way valve 8 to recirculate through condensing pipe 82
At 6, the first port 86a and the second port 86b are communicated. Conversely, when the third port 94c and the second port 94b communicate with each other in the first water supply three-way valve 94 to take out hot or cold water in the heat recovery tank 58, the refrigerant flows from the refrigerant heat exchanger 70. In the first condensate three-way valve 86, the third port 86c and the second port 86b are connected so that the cold water or the hot water flows back to the original heat recovery tank 58 via the first condenser pipe 82.

By providing a plurality of sets of the water supply or hot water supply system 98 to the refrigerant heat exchanger 70 and the recirculation system 100 from the fan coil unit or the refrigerant heat exchanger as described above, the cooling mode or the heating mode is provided. Operation can be freely selected as required. Furthermore, the heat storage water tank 5
The fourth water supply pipe 102 branched from the forward pipe 62a of the second pipe header 62, the fifth water pipe 104 branched from the forward pipe 64a of the pipe header 64 of the heat recovery tank 58, and the fourth water pipe 102 of the fourth water pipe 102. Water supply 104 of the water supply tip and the fifth water supply pipe
A second water supply three-way valve 106 having a tip connected to select one of the two water supply pipes for water supply, and a second water supply three-way valve 10
A sixth water supply pipe 110 for supplying cold water or hot water from the sixth through a water circulation pump 108, and a fourth water condensation pipe 112 branched from the return pipe 64 b of the pipe header 64 of the heat storage water tank 58.
The fifth condensing pipe 114 branched from the return pipe 64b of the pipe header 64 of the heat recovery tank 58, the condensing tip of the fourth condensing pipe 112, and the condensing tip of the fifth condensing pipe 114 are connected to each other. A second condensing three-way valve 116 for selecting and condensing either the fourth or fifth condensing pipe, and a second condensing three-way valve 116
And a sixth condenser tube 118 for circulating the supplied cold or hot water, the cooling / heating water circulation circuit is provided, so that the requirements for floor cooling / heating, hot water supply, etc., as well as cooling / heating can be satisfied at the same time.

By providing a plurality of sets of the water supply or hot water supply system 100 to the refrigerant heat exchanger 71 described above and the recirculation system 98 from the fan coil unit or the refrigerant heat exchanger, a cooling mode or a heating mode is provided. Operation can be freely selected as required. Furthermore, the heat storage water tank 5
The fourth water supply pipe 112 branched from the outward pipe 62a of the second pipe header 62, the fifth water pipe 114 branched from the outward pipe 64a of the pipe header 64 of the heat recovery tank 58, and the fourth water pipe 112 Water supply tip 114 and water supply 114 of the fifth water supply pipe
A second water supply three-way valve 116 whose leading end is connected to select one of the two water supply pipes to supply water, and a second water supply three-way valve 11
6 through a water circulation pump 108 to supply cold water or hot water, and a fourth condenser pipe 102 branched from the return pipe 64b of the pipe header 64 of the heat storage water tank 58.
The fifth condensing pipe 104 branched from the return pipe 64b of the pipe header 64 of the heat recovery tank 58, the condensing tip of the fourth condensing pipe 102 and the condensing tip of the fifth condensing pipe 104 are connected. A second condensing three-way valve 106 for selecting one of the fourth and fifth condensing pipes and condensing water, and a second condensing three-way valve 106
And a sixth condenser 110 for circulating the supplied cold water or hot water, a cooling / hot water circulation circuit is provided, so that it is possible to simultaneously satisfy the requirements for floor cooling / heating, hot water supply, etc. in addition to cooling / heating.

[0059]

As described in detail above, the heat recovery type regenerative heat storage / heating / hot water supply system according to the present invention is provided with the first to third heat exchangers in the heat pump circuit, each of which acts as an evaporator or a condenser. It is possible to perform summer cooling operation, summer ice storage operation, winter heating circuit, and winter heat storage operation as necessary, and use the water or refrigerant circulation circuit to store cold water or heat in the heat storage water tank or heat recovery tank. Can accumulate water. In addition, the cold water or hot water accumulated in these water tanks is supplied to a refrigerant heat exchanger of a refrigerant circulation cooling / heating device, and in addition to being capable of cooling or heating, hotels, hospitals, welfare facilities, super public baths, etc. Cooling and heating, floor cooling and heating, hot and cold water, hot and cold water are possible, and one system can collect heat, ice heat, air conditioning with secondary refrigerant, secondary cold and hot water air conditioning,
It is a device that can centrally manage and operate the requirements of the chilled / hot water floor cooling and heating, hot water supply, etc., and can eliminate extra equipment, simplify the operation and management and maintenance of the equipment, It starts up quickly and is useful for energy saving.

[Brief description of the drawings]

FIG. 1 is a block diagram showing the overall configuration of the present invention.

FIG. 2 is an explanatory diagram of a configuration of a heat pump circuit constituting the present invention.

FIG. 3 is a configuration explanatory diagram illustrating a flow of a working medium when the heat pump circuit illustrated in FIG. 2 configures a cooling circuit.

FIG. 4 is an explanatory diagram showing a flow of a working medium when the heat pump circuit shown in FIG. 2 constitutes an ice storage circuit.

FIG. 5 is a configuration explanatory diagram showing a flow of a working medium when the heat pump circuit shown in FIG. 2 configures a heating circuit.

FIG. 6 is a configuration explanatory diagram showing a flow of a working medium when the heat pump circuit shown in FIG. 2 forms a heat storage circuit.

FIG. 7 is a configuration explanatory view showing an input circuit of hot water or cold water to the heat storage water tank and the heat recovery tank, and an output circuit of hot water or cold water from the heat storage water tank and the heat recovery tank according to the present invention.

[Explanation of symbols]

 10 Heat pump 12 Compressor 14 First heat exchanger 16 Second heat exchanger 18 Third heat exchange Blower 22 ... Three-way valve 22a ... First terminal of three-way valve 22b ... Second terminal of three-way valve 22c ... Third part of three-way valve , A four-way valve 24a, a first terminal of a four-way valve 24b, a second terminal of a four-way valve 24c, a third terminal of a four-way valve 24d, A fourth terminal of a four-way valve 26 a first expansion valve 28 a first check valve 30 a second expansion valve 32 a second Check valve 34... Third expansion valve 36... Third check valve 38 to 50... Electromagnetic on-off valve 52... Heat storage water tank 54. Heat storage coil 55 ··· First circulation circuit 56 ··· Water circulation pump 58 ··· Heat recovery tank 60 ··· Water circulation pump 62 ··· Pipe header of heat storage water tank 62a ··· Heat storage water tank Outgoing pipe of the piping header of the heat storage tank 62b ·························································· Heat recovery tank ... Second circulation circuit 68... Water circulation pump 82... First condensing pipe 84... Second condensing pipe 86. ... First condensing three-way valve 88... Third condensing pipe 90... First water supply pipe 92... Second water supply pipe 94. 2nd water supply pipe 96... 3rd water supply pipe 98... Water supply set 100. Water pipe 104 Fifth condensing pipe 106 Second water supply three-way valve 108 Water circulation pump 110 Sixth condensing pipe 112 Fourth water pipe 114 ... Fifth water supply pipe 116... Second water supply three-way valve 118.

Claims (6)

[Claims] 1. A first element acting as a condenser or evaporator
Heat exchanger (14), a second heat exchanger (16) acting as a condenser or evaporator, a third heat exchanger (18) acting as a condenser or evaporator, A closed circuit in which the working medium is circulated by connecting the exchanger through a switching valve, an on-off valve, a check valve, and an expansion valve; and a closed circuit connected to the closed circuit to compress the working medium and circulate in the closed circuit. A heat pump comprising a compressor (12) to be operated, and a three-way valve (22) among the switching valves constituting the closed circuit,
The inlet port (22a) is connected to the discharge port (12a) of the working medium pressurized by the compressor (12), and the first port (22b) is connected to the inlet port (24) of the four-way valve (24).
a) and the circuit connected to the second port (22c) is branched into two circuits, one of which is an on-off valve (4).
0) is connected to the first connection port (14a) of the first heat exchanger (14) into which the working medium directly flows, and the other circuit directly flows the working medium through the on-off valve (38). The four-way valve (24) of the switching valve that is connected to the first connection port (16a) of the second heat exchanger (16)
An inlet port (24a) has three ports, a first port (24b), a second port (24c), and a third port (22d), and the inlet port (24a) is the third of the outlet ports. The first port (24b) or the third port (24d) communicates with the second port (24b).
c) is configured to communicate with a first or third port (24b or 24d) that is not communicated with the inlet port (24a), and the first port (24b) of the four-way valve (24) is connected to the working medium. Is directly connected to the first connection port (18a) of the third heat exchanger (18), and the second port (24c) is connected to the suction port (12b) of the compressor (12). The circuit connected to the port (24d) of No. 3 branches into two circuits, one of which is a three-way valve (2) via an on-off valve (48).
2) is connected to the first connection port (14a) of the first heat exchanger (14) into which the working medium flows directly, and the other circuit is connected via the on-off valve (50) to the three-way valve. (2
2) is connected to the first connection port (16a) of the second heat exchanger (16) into which the working medium flows directly into the circuit from (2), and the second connection of the first heat exchanger (14) A first expansion valve (26) having a first check valve 28 for preventing inflow of the working medium in a bypass circuit and a circuit interposed with an on-off valve 42 are connected to the port (14b), and a second heat is connected. A second expansion valve (3) having a second check valve (32) in a bypass circuit for preventing the working medium from flowing into a second connection port (16a) of the exchanger (16).
0) and a circuit with an on-off valve (44) interposed,
A third expansion valve (34) having a third check valve (36) in a bypass circuit for preventing the inflow of the working medium into a second connection port (18b) of the heat exchanger (18), and an on-off valve. An ice heat storage coil tube (54) immersed in the first heat exchanger (14) and the heat storage water tank (52) while connecting the circuits interposed therebetween (46) and connecting the three circuits to each other. ) Is connected in a closed circuit and a heat exchange medium is circulated between the first circuit and the first circuit (55).
A second circulation circuit (65) for connecting the second heat exchanger (16) and the heat recovery tank (58) and circulating a heat exchange medium therebetween, and a third heat exchanger ( And a blower (20) for radiating or absorbing the heat of the heat recovery type heat storage / cooling / heating / water supply system. 2. In summer cooling operation, an inlet port (22a) of the three-way valve (22) is connected to a second port (22).
c), the open / close valve (40) of one of the two branched circuits connected to the second port (22b) is closed, so that the working medium compressed by the compressor (12) is closed. The first connection port (16) of the second heat exchanger (16) is connected via the three-way valve (22) and the on-off valve (38).
a), the heat exchanger (16) acts as a condenser, and heat is exchanged with a heat exchange medium circulated by the second circulation circuit (65) to the heat recovery tank (58) as hot water. The working medium that recovers heat and flows out of the second connection port (16b) of the second heat exchanger (16) passes through the second check valve (32) and the on-off valve (44). By closing the on-off valve (46) toward the third heat exchanger (18), a working medium passes through the on-off valve (42) and the first expansion valve (26), and The working medium expanded under reduced pressure is injected into the second connection port (14b) of the heat exchanger (14), the first heat exchanger (14) acts as an evaporator, and the first circulation circuit (55) ), The ice storage coil tube (54) is exchanged with the heat exchange medium circulated by And the heat storage water tank (52) and cooled, closed off valve (50) and said four-way valve (24)
By connecting the third port (24d) and the second port (24c), the working medium discharged from the first connection port (14a) of the first heat exchanger (14) is transferred to the compressor ( The heat recovery type regenerative cooling / heating / hot-water supply system according to claim 1, wherein a closed circuit for returning to (12) is formed. 3. In the summer ice storage operation, an inlet port (22a) of the three-way valve (22) is connected to a first port (22).
b), the first port (22b) is connected to the inlet port (24a) of the four-way valve (24), and the inlet port (22a) of the four-way valve (24) is connected to the first port (2).
4b), the working medium compressed by the compressor (12) is supplied to the three-way valve (22) and the four-way valve (2).
By injecting into the first connection port (18a) of the third heat exchanger (18) via 4), it acts as a condenser, and the generated heat is radiated to the atmosphere by the blower (20). , The second connection port (1) of the third heat exchanger (18).
8b) from the third check valve (3)
6) and the on-off valve (46).
By closing 4), the gas passes through the on-off valve (42) and the first expansion valve (26), and is decompressed and expanded to the second connection port (14b) of the first heat exchanger (14). The first heat exchanger (14) acts as an evaporator, and the first heat exchanger (14) acts as an evaporator. 54), the heat storage water tank (52) is cooled, the on-off valve (50) is closed, and the third valve of the four-way valve (24) is closed.
The port (24d) communicates with the second port (24c) to allow the working medium discharged from the first connection port (14a) of the first heat exchanger (14) to pass through the compressor (1).
2. A heat recovery type regenerative heating / cooling / heating / water supply system according to claim 1, wherein a closed circuit for returning to 2) is formed. 4. In a winter heating operation, an inlet port (22a) of the three-way valve (22) is connected to a second port (22).
c), the open / close valve (38) of the other circuit that is connected to the second port (22c) and branched into two is closed, so that the working medium compressed by the compressor (12) is closed. A first connection port (14) of the first heat exchanger (14) through the three-way valve (22) and the on-off valve (40);
a), the first heat exchanger (14) acts as a condenser, and the heat storage water tank (52) is exchanged with a heat exchange medium circulated by the first circulation circuit (55).
Heat as hot water to the first heat exchanger (14)
The working medium flowing out of the second connection port (14b) passes through the first check valve (28) and the on-off valve (42) and passes through the second heat exchanger (16) or the third heat exchanger. The branch point of the circuit leading to (18) is reached, but the third heat exchanger (18)
By closing the on-off valve (46) of the circuit leading to the valve, the working medium is supplied to the on-off valve (44) and the second expansion valve (3).
0), the working medium expanded under reduced pressure is injected into the second connection port (16b) of the second heat exchanger (16), and the second heat exchanger (16) acts as an evaporator. Then, the heat recovery tank (58) is cooled by heat exchange with a heat exchange medium circulated by the second circulation circuit (65), the on-off valve (48) is closed, and the four-way valve (24) is closed. By connecting the third port (24d) and the second port (24c), the first connection port (1) of the second heat exchanger (16) is connected.
The heat recovery type regenerative cooling / heating / hot water supply system according to claim 1, wherein a closed circuit is formed for returning the working medium discharged from 6a) to the compressor (12). 5. In the winter heat storage operation, the inlet port (22a) of the three-way valve (22) is connected to the second port (22).
c), the open / close valve (38) of the other circuit that is connected to the second port (22c) and branched into two is closed, so that the working medium compressed by the compressor (12) is closed. A first connection port (14) of the first heat exchanger (14) through the three-way valve (22) and the on-off valve (40);
a), the first heat exchanger (14) acts as a condenser, and the heat storage water tank (52) is exchanged with a heat exchange medium circulated by the first circulation circuit (55).
Heat as hot water to the first heat exchanger (14)
The working medium flowing out of the second connection port (14b) passes through the first check valve (28) and the on-off valve (42) and passes through the second heat exchanger (16) or the third heat exchanger. The branch point of the circuit leading to (18) is reached, but the second heat exchanger (16)
By closing the on-off valve (44) of the circuit leading to, the working medium passes through the on-off valve (46) and the third expansion valve (34), and the working medium passes through the third heat exchanger (18). The working medium that has been decompressed and expanded is injected into the connection port (18b) of the second valve, the third heat exchanger (18) acts as an evaporator, and heat is absorbed from the atmosphere by blowing air from the blower (20). (24) The first port (24b) and the second port
To form a closed circuit for returning the working medium discharged from the first connection port (18a) of the third heat exchanger (18) to the compressor (12) by communicating with the port (24c). The heat recovery type regenerative cooling / heating / hot water supply / water supply device according to claim 1. 6. The heat exchange medium circulated by the first circulation circuit (55) is brine antifreeze, and the heat exchange medium circulated by the second circulation circuit (65) is water. The heat recovery type regenerative cooling / heating / hot water supply / water supply device according to claim 1.