JPH05306849A - Multi-room cooler/heater - Google Patents

Abstract

PURPOSE:To downsize a refrigerant conveying unit and to improve high lift performance by reducing a load of the conveying unit if there is a difference in heights of a heat source unit and a utilization side unit in a multi-room cooler/heater which is separated into a heat source side refrigerant cycle and a utilization side refrigerant cycle. CONSTITUTION:The multi-room cooler/heater comprises a heat source side room cooling cycle 23, a heat source side room heating cycle 28, a refrigerant conveying unit bypass valve 33 provided in a connecting tube for connecting a discharge port to a suction port of a refrigerant conveying unit 8, a heat source unit 10'', a room cooling auxiliary unit 32 disposed above utilization side units 13a, 13b, 13c, a room heating auxiliary unit disposed thereunder, and a utilization side room cooling cycle 16' formed by circularly connecting them.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-chamber cooling / heating apparatus separated into a heat source side refrigerant cycle and a use side refrigerant cycle.

[0002]

2. Description of the Related Art Conventionally, a refrigerant cycle of a multi-chamber cooling and heating apparatus separated into a heat source side refrigerant cycle and a use side refrigerant cycle is
As shown in Japanese Patent Laid-Open No. 62-72040, FIG.
Was configured like.

In FIG. 4, 1 is a compressor, 2 is a heat source side four-way valve, 3 is a heat source side heat exchanger, 4 is a pressure reducing device, and 5 is a first auxiliary heat exchanger, which are connected in an annular shape to form a heat source. The side refrigerant cycle 6 is formed. 7 is the second auxiliary heat exchanger, the first
It is integrally formed so as to exchange heat with the auxiliary heat exchanger 5.

Reference numeral 8 is a refrigerant transfer device for sending out a refrigerant, and 9 is a utilization side four-way valve, which are housed in a heat source unit 10. 11a, 11b, 11c are heat exchangers on the use side, 12
a, 12b, 12c are the use side heat exchangers 11a, 11b,
A capacity control valve for adjusting the amount of refrigerant flowing into 11c is housed in the use side units 13a, 13b, 13c, and is connected to the heat source unit 10 by the use side multi-liquid pipe 14 and the use side small liquid pipe 15.

Second auxiliary heat exchanger 7, refrigerant transfer device 8, use side four-way valve 9, use side heat exchangers 11a, 11b, 11
c and the capacity control valves 12a, 12b, 12c are connected in an annular shape to form a utilization side refrigerant cycle 16.

The operation of the multi-room cooling and heating apparatus configured as described above will be described. First, consider cooling operation.
The refrigerant cycle during the cooling operation is indicated by the solid arrow in the figure. In the heat source side refrigerant cycle 6, the high temperature and high pressure gas from the compressor 1 passes through the heat source side four-way valve 2 and radiates heat in the heat source side heat exchanger 3 to be condensed and liquefied and reduced in pressure in the pressure reducing device 4 in the first auxiliary heat exchanger 5. It evaporates and circulates to the compressor 1 through the heat source side four-way valve 2.

At this time, the second auxiliary heat exchanger 7 and the first auxiliary heat exchanger 5 of the use side refrigerant cycle 16 exchange heat, the gas refrigerant of the use side refrigerant cycle 16 is cooled and liquefied, and the use side four-way valve. After being sent to the refrigerant transporting device 8 through 9, and being sent by the refrigerant transporting device 8 to the usage-side multi-liquid pipe 14 through the usage-side four-way valve 9, the flow rate is adjusted by the capacity control valves 12a, 12b, 12c, and then used. It is sent to the side heat exchangers 11a, 11b, 11c to be cooled, endothermicly evaporated, and circulated to the second auxiliary heat exchanger 7 through the use side small liquid pipe 15.

Next, consider the heating operation. The refrigerant cycle during heating operation is indicated by the dashed arrow in the figure. In the heat source side refrigerant cycle 6, the high temperature high pressure refrigerant from the compressor 1 is sent from the heat source side four-way valve 2 to the first auxiliary heat exchanger 5, radiates heat to condense and liquefy, and is decompressed by the decompression device 4 to generate heat on the heat source side. The heat is absorbed and evaporated in the exchanger 3 and circulates to the compressor 1 through the heat source side four-way valve 2.

At this time, in the use side refrigerant cycle 16, the refrigerant exchanges heat with the first auxiliary heat exchanger 5 in the second auxiliary heat exchanger 7,
The liquid refrigerant in the use side refrigerant cycle 16 is heated and gasified, and passes through the use side small liquid pipe 15 to use side heat exchanger 11a,
11b, 11c are heated to radiate heat and liquefied, and after adjusting the amount of refrigerant circulated by the capacity control valves 12a, 12b, 12c, they are sent to the use side multi-liquid pipe 14 and passed through the use side four-way valve 9. Is sent to the refrigerant transport device 8 and circulates to the second auxiliary heat exchanger 7.

[0010]

However, in the above-mentioned conventional configuration, the refrigerant is liquefied and liquefied in the utilization side heat exchangers 11a, 11b, 11c during the heating operation.
It will circulate through the utilization side multi-liquid pipe 14. At this time, the heat source side unit 10 and the use side units 13a, 13b, 13
As the height difference of c increases, the liquid column load due to the liquid refrigerant in the use-side multi-liquid pipe 14 increases. Therefore, as the height difference between the heat source side unit 10 and the use side units 13a, 13b, 13c increases, the load of the refrigerant transfer device 8 increases, and the problem that the refrigerant transfer device 8 increases in size occurs. Was there.

The present invention solves the problems of the prior art by reducing the load on the refrigerant carrier device, downsizing the refrigerant carrier device, and increasing the system lift regardless of the height difference between the heat source side unit and the user side unit. The purpose is to improve performance.

Another object of the present invention is to reduce the load on the refrigerant carrier device, downsize the refrigerant carrier device, improve the high lift performance of the system, and increase the degree of freedom in equipment design.

Still another object of the present invention is to reduce the load on the refrigerant carrier device, downsize the refrigerant carrier device 8, increase the degree of freedom in equipment design, improve the high head performance of the system and carry out the refrigerant carrier. The purpose is to reduce the power consumption of the device and improve the energy saving.

[0014]

In order to achieve this object, a multi-chamber cooling and heating apparatus of the present invention comprises a compressor, a heat source side four-way valve,
A heat source side cooling system in which a heat source side heat exchanger, a pressure reducing device, a first electromagnetic valve for cooling that is opened during cooling, a first auxiliary heat exchanger for cooling, and a second electromagnetic valve for cooling that is opened during cooling are connected in an annular shape. Cycle, the compressor, the heat source side four-way valve, the heat source side heat exchanger, the pressure reducing device, a small liquid pipe connecting the heat source side four-way valve and the second electromagnetic valve for cooling, heating to open during heating First solenoid valve for heating, the first auxiliary heat exchanger for heating, the second solenoid valve for heating that opens during heating, the decompression device and the first for cooling
A heat source side heating cycle in which a multi-liquid pipe connected to an electromagnetic valve is connected in an annular shape, and a second auxiliary heat exchanger for cooling that is formed integrally with the first auxiliary heat exchanger for cooling to exchange heat, and a refrigerant. A transport device, a plurality of use-side units including a use-side heat exchanger and a capacity control valve, a cooling shutoff valve that closes during cooling, and a heating second that is integrally formed with the heating first auxiliary heat exchanger to exchange heat.
Auxiliary heat exchanger, a utilization side cycle in which a heating cutoff valve that is closed during heating is connected in an annular shape, the compressor, the heat source side four-way valve, the heat source side heat exchanger, the pressure reducing device, the refrigerant transfer device, the First auxiliary heat exchanger for cooling, the second auxiliary for cooling
Auxiliary heat exchanger, the first solenoid valve for cooling, the second cooling valve
The solenoid valve, the heating first solenoid valve, the heating second solenoid valve, and the heating cutoff valve are housed in a heat source side unit, and the heating first auxiliary heat exchanger and the heating second auxiliary heat exchanger are included. And the cooling shutoff valve is housed in the heating auxiliary unit, the heat source side unit is located above the usage side unit, and the heating auxiliary unit is located below the usage side unit. ..

A compressor, a heat source side four-way valve, a heat source side heat exchanger, a pressure reducing device, a first solenoid valve for cooling which is opened during cooling,
1st auxiliary heat exchanger for cooling, 2nd cooling for opening during cooling
A heat source side cooling cycle consisting of a solenoid valve connected in an annular shape,
The compressor, the heat source side four-way valve, the heat source side heat exchanger,
The pressure reducing device, the small liquid pipe connecting the heat source side four-way valve and the second cooling solenoid valve, the first solenoid valve for heating that is opened during heating, the first auxiliary heat exchanger for heating, and the heating that is opened during heating. Second electromagnetic valve, a heat source side heating cycle in which a multi-liquid pipe connecting the pressure reducing device and the cooling first electromagnetic valve is connected in an annular shape, and the first auxiliary heat exchanger for cooling is integrated. A second auxiliary heat exchanger for cooling that forms and exchanges heat, a refrigerant transfer device, a plurality of usage-side units that include a usage-side heat exchanger and a capacity control valve, a cooling shut-off valve that closes during cooling, the first auxiliary for heating A second auxiliary heat exchanger for heating that is integrally formed with the heat exchanger to exchange heat, a utilization side cycle in which a heating cutoff valve that is closed during heating is connected in an annular shape, the compressor, the heat source side four-way valve, and the heat source The side heat exchanger and the decompression device are housed in a heat source unit, Device, first cooling auxiliary heat exchanger, second cooling second auxiliary heat exchanger, first cooling solenoid valve, second cooling solenoid valve, first heating solenoid valve, first heating solenoid 2 The solenoid valve and the heating cutoff valve are housed in the cooling auxiliary unit, and the first heating auxiliary heat exchanger, the second heating auxiliary heat exchanger and the cooling cutoff valve are housed in the auxiliary heating unit. The cooling auxiliary unit is located above the utilization side unit, and the heating auxiliary unit is located below the utilization side unit.

Further, the compressor, the heat source side four-way valve, the heat source side heat exchanger, the pressure reducing device, the first electromagnetic valve for cooling which is opened during cooling, the first auxiliary heat exchanger for cooling, and the second cooling side which is opened during cooling. A heat source side cooling cycle in which a solenoid valve is connected in an annular shape, the compressor, the heat source side four-way valve, the heat source side heat exchanger, the pressure reducing device, the heat source side four-way valve, and the second cooling unit.
A small liquid pipe connected to a solenoid valve, the first for heating that opens during heating
A heat source comprising a solenoid valve, a first auxiliary heat exchanger for heating, a second solenoid valve for heating which is opened during heating, and a multi-liquid pipe in which the pressure reducing device and the first solenoid valve for cooling are connected in an annular shape. A side heating cycle and a second auxiliary heat exchanger for cooling, which is integrally formed with the first auxiliary heat exchanger for cooling to exchange heat, a refrigerant transfer device, and a communication in which a discharge port and a suction port of the refrigerant transfer device are in communication with each other. Refrigerant transfer device bypass valve provided in the middle of the pipe, a plurality of usage-side units consisting of a usage-side heat exchanger and a capacity control valve, a cooling shutoff valve that closes during cooling, and the heating first auxiliary heat exchanger A second auxiliary heat exchanger for heating for exchanging heat, a utilization side cycle in which a heating cutoff valve closed during heating is connected in an annular shape, the compressor, the heat source side four-way valve, the heat source side heat exchanger and the decompression The device is housed in a heat source unit,
The refrigerant transfer device, the cooling first auxiliary heat exchanger, the cooling second auxiliary heat exchanger, the cooling first solenoid valve, the cooling second solenoid valve, the heating first solenoid valve, the The second electromagnetic valve for heating, the heating cutoff valve, and the refrigerant transfer device bypass valve are housed in the cooling auxiliary unit, and the first heating valve is used.
The auxiliary heat exchanger, the heating second auxiliary heat exchanger, and the cooling shutoff valve are housed in the heating auxiliary unit, and the cooling auxiliary unit is located above the utilization side unit, and the heating auxiliary unit is It is configured to be located below the use side unit.

[0017]

With the above-described structure, the present invention enables the heating operation because the circulation using liquid gravity as the power is established without operating the refrigerant transfer device during the heating operation. Therefore, a load due to the liquid column due to the liquid refrigerant is not applied to the refrigerant transfer device, and the load on the refrigerant transfer device can be reduced.

Further, according to the present invention, the load of the refrigerant transfer device can be reduced during the heating operation and the heat source side unit can be installed at an arbitrary position by the above-mentioned configuration.

Further, according to the present invention, the load on the refrigerant transfer device can be reduced during the heating operation by the above-mentioned structure,
The heat source side unit can be installed at any position. Further, by opening the refrigerant transfer device bypass valve during the cooling operation, it is possible to obtain the circulation of the usage-side refrigerant cycle by using the liquid refrigerant gravity as the power source even during the cooling operation, so that the refrigerant transfer device can be stopped.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A multi-room cooling and heating system according to a first embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows a refrigerant cycle of a multi-room cooling and heating system according to the first embodiment of the present invention. In FIG. 1, the same components as those of the conventional example are designated by the same reference numerals, and detailed description thereof will be omitted.

Compressor 1, heat source side four-way valve 2, heat source side heat exchanger 3, pressure reducing device 4, first electromagnetic valve 19 for cooling, which is opened during cooling, first auxiliary heat exchanger 17 for cooling, and opened during cooling. The second cooling solenoid valve 20 is annularly connected to form a heat source side cooling cycle 23.

Further, the compressor 1, the heat source side four-way valve 2, the heat source side heat exchanger 3, the pressure reducing device 4, the small liquid pipe 21 connected to the second cooling solenoid valve 20, the first solenoid valve for heating 26, and the heating. The heat source side heating cycle 28 is formed by annularly connecting the multi-liquid pipe 22 connected to the first auxiliary heat exchanger 24 for heating, the second electromagnetic valve for heating 27, and the first electromagnetic valve for cooling.

Reference numeral 18 denotes a cooling second auxiliary heat exchanger which is formed integrally with the cooling first auxiliary heat exchanger 17.

Numeral 25 is a first auxiliary heat exchanger for heating 24
It is a second auxiliary heat exchanger for heating that is integrally formed with.

Reference numeral 29 is a heating shutoff valve which is closed during heating operation,
Reference numeral 30 is a cooling shutoff valve that is closed during cooling operation.

Second auxiliary heat exchanger for cooling 18, refrigerant transfer device 8, use side units 13a, 13b, 13c, cooling shutoff valve 30, second auxiliary heat exchanger for heating 25, heating shutoff valve 2
9 are connected in an annular shape to form a utilization side refrigerant cycle 16 '.

Compressor 1, heat source side four-way valve 2, heat source side heat exchanger 3, pressure reducing device 4, refrigerant transfer device 8, first auxiliary heat exchanger for cooling 17, second auxiliary heat exchanger for cooling 18, cooling For first
The electromagnetic valve 19, the second cooling electromagnetic valve 20, the first heating electromagnetic valve 26, the second heating electromagnetic valve 27, and the heating cutoff valve 29 are housed in the heat source side unit 10 '.

The first auxiliary heat exchanger 24 for heating, the second auxiliary heat exchanger 25 for heating, and the cooling shutoff valve 30 are housed in the auxiliary heating unit, and the heat source side unit 10 'is used side unit 13a, Located above 13b and 13c,
The heating auxiliary unit 31 includes the use side units 13a, 13
It is located below b and 13c.

The operation of this embodiment constructed as described above will be described with reference to the refrigerant cycle diagram of FIG.

First, consider the cooling operation. The refrigerant cycle during the cooling operation is indicated by the solid arrow in the figure.

In the cooling operation, the first cooling solenoid valve 19, the second cooling solenoid valve 20, and the heating shutoff valve 29 are opened, and the first heating solenoid valve 26, the second heating solenoid valve 27, and the cooling shutoff valve are opened. Three
Close 0.

The high-temperature high-pressure gas from the compressor 1 passes through the heat-source-side four-way valve 2, radiates heat in the heat-source-side heat exchanger 3, condenses into liquefaction, is decompressed by the decompression device 4, and is sent to the multi-liquid pipe 22 for cooling first. After passing through the solenoid valve 19, the first auxiliary heat exchanger 5 evaporates and is sent from the second cooling solenoid valve 20 to the small liquid pipe 21 and is circulated to the compressor 1 through the heat source side four-way valve 2 and the heat source side cooling cycle 23. To form.

At this time, the second auxiliary heat exchanger for cooling 18 and the first auxiliary heat exchanger for cooling 17 exchange heat, the gas refrigerant is cooled and liquefied, and is sent to the refrigerant transfer device 8 and the capacity control valve 12
After the flow rate is adjusted by a, 12b, 12c, it is sent to the heat exchangers 11a, 11b, 11c on the use side for cooling and endothermic evaporation, and the second auxiliary heat exchanger 18 for cooling through the small liquid pipe on the use side.
To form a use side cooling cycle 16 '.

Next, the heating operation will be considered. The refrigerant cycle during heating operation is indicated by the dashed arrow in the figure.

In the heating operation, the first cooling solenoid valve 19, the second cooling solenoid valve 20, and the heating shutoff valve 29 are closed, and the first heating solenoid valve 26, the second heating solenoid valve 27, and the cooling shutoff valve. Three
Open 0.

The high-temperature high-pressure refrigerant from the compressor 1 is sent from the heat source side four-way valve 2 to the small liquid pipe 21, passes through the heating first electromagnetic valve 26, is sent to the heating first auxiliary heat exchanger 24, and radiates heat. To condense and liquefy, pass through the second heating solenoid valve 27, and
2, the pressure is reduced by the pressure reducing device 4, the heat source side heat exchanger 3 absorbs heat and evaporates, and the heat source side four-way valve 2 circulates to the compressor 1 to form a heat source side heating cycle 28.

At this time, the second auxiliary heat exchanger 25 for heating exchanges heat with the first auxiliary heat exchanger 24 for heating, the liquid refrigerant is heated and gasified, and the use side heat exchangers 11a, 11b, 11c.
Sent to and heated to liquefy the heat, and the capacity control valves 12a, 12
After adjusting the amount of refrigerant circulating through the use side heat exchangers 11a, 11b, 11c by b and 12c, the refrigerant falls by its own weight and circulates to the second heating auxiliary heat exchanger 25.

By disposing the heating auxiliary unit 31 below the use side units 13a, 13b, 13c in this manner, the refrigerant transfer device 8 can be stopped during the heating operation. Therefore, no load is applied to the refrigerant transfer device 8, and the refrigerant transfer device 8 can be downsized.

Next, the second embodiment will be described. FIG. 2 shows a refrigerant cycle of the multi-room cooling and heating apparatus according to the second embodiment of the present invention. In FIG. 2, the same components as those in the first embodiment are designated by the same reference numerals, and detailed description thereof will be omitted.

Since the operation is the same as that of the first embodiment, its explanation is omitted here. Reference numeral 10 ″ denotes a heat source side unit that houses the compressor 1, the heat source side four-way valve 2, the heat source side heat exchanger 3, and the pressure reducing device 4.

Further, 32 is the refrigerant transfer device 8, the first for cooling
Auxiliary heat exchanger 17, second cooling second auxiliary heat exchanger 18, first cooling solenoid valve 19, second cooling solenoid valve 20, first heating
Solenoid valve 26, second solenoid valve 27 for heating, and heating cutoff valve 29
It is an air conditioning auxiliary unit that stores.

With the above configuration, the installation position of the heat source side unit 10 '' can be arbitrarily determined.

Next, the third embodiment will be described. FIG. 3 shows a refrigerant cycle of the multi-room cooling and heating apparatus according to the third embodiment of the present invention. In FIG. 3, the same components as those in the second embodiment are designated by the same reference numerals, and detailed description thereof will be omitted.

Reference numeral 33 denotes a refrigerant transfer device bypass valve provided in the middle of a communication pipe connecting the discharge port and the suction port of the refrigerant transfer device 8.

The operation of this embodiment constructed as described above will be described with reference to the refrigerant cycle diagram of FIG. However, here, only the operation of the cooling operation in question will be described.

The refrigerant cycle during the cooling operation is indicated by the solid arrow in the figure. In the cooling operation, the first cooling solenoid valve 19, the second cooling solenoid valve 20, and the heating cutoff valve 29 are opened, and the first heating solenoid valve 26, the second heating solenoid valve 27, and the cooling cutoff valve 30 are opened.
Close.

The high-temperature high-pressure gas from the compressor 1 passes through the four-way valve 2 on the heat source side, radiates heat in the heat exchanger 3 on the heat source side to be condensed and liquefied, is decompressed by the decompression device 4, and is sent to the multi-liquid pipe 22 for the first cooling. After passing through the electromagnetic valve 19, the first auxiliary heat exchanger for cooling 17 evaporates and is sent from the second electromagnetic valve for cooling 20 to the small liquid pipe 21 and circulates through the heat source side four-way valve 2 to the compressor 1 for heat source side cooling. Cycle 23
To form.

At this time, the second auxiliary heat exchanger for cooling 18 and the first auxiliary heat exchanger for cooling 17 exchange heat, the gas refrigerant is cooled and liquefied, and is sent to the refrigerant transfer device 8 and the capacity control valve 12
After the flow rate is adjusted by a, 12b, 12c, it is sent to the heat exchangers 11a, 11b, 11c on the use side for cooling and endothermic evaporation, and the second auxiliary heat exchanger 18 for cooling through the small liquid pipe on the use side.
To form a use side cooling cycle 16 '.

At this time, the second auxiliary heat exchanger for cooling 18
Since the gas refrigerant is liquefied as a cooling liquid by means of this, if the refrigerant transfer device bypass valve 33 is opened and the refrigerant transfer device 8 is stopped, the liquid refrigerant falls due to its own weight and the use side heat exchangers 13a, 13b, 13
The use side refrigerant cycle 16 'can be formed by circulating c.

In this way, in addition to the configuration of the second embodiment, the refrigerant transfer device bypass valve 33 provided in the middle of the communication pipe connecting the discharge port and the suction port of the refrigerant transfer device 8 is provided, so that the cooling operation is performed. At some times, the refrigerant carrier 8 can be stopped.

[0052]

As described above, the compressor, the heat source side four-way valve, the heat source side heat exchanger, the pressure reducing device, the first electromagnetic valve for cooling which is opened during cooling, the first auxiliary heat exchanger for cooling, and the one during cooling. A heat source side cooling cycle in which a second electromagnetic valve for cooling to be opened is connected in an annular shape, the compressor, the heat source side four-way valve, the heat source side heat exchanger, the pressure reducing device, the heat source side four-way valve and the A small liquid pipe connected to a cooling second electromagnetic valve, a heating first electromagnetic valve opened during heating, a first auxiliary heat exchanger for heating, a heating second electromagnetic valve opened during heating, the pressure reducing device and the above A heat source side heating cycle in which a multi-liquid pipe connected to the first cooling solenoid valve is connected in an annular shape, and a second cooling auxiliary heat for integrally forming heat with the first cooling auxiliary heat exchanger Multiple usage-side units consisting of exchangers, refrigerant transfer devices, usage-side heat exchangers, and capacity control valves A use-side cycle in which a cooling shut-off valve that closes during cooling, a second auxiliary heat exchanger for heating that is integrally formed with the first auxiliary heat exchanger for heating and exchanges heat, and a heating shut-off valve that closes during heating are connected in an annular shape And the compressor, the heat source side four-way valve, the heat source side heat exchanger, the pressure reducing device, the refrigerant transfer device, the cooling first auxiliary heat exchanger, the cooling second auxiliary heat exchanger, the cooling First solenoid valve, the cooling second solenoid valve, the heating first solenoid valve, the heating second
The solenoid valve and the heating cutoff valve are housed in the heat source side unit, the heating first auxiliary heat exchanger, the heating second auxiliary heat exchanger and the cooling cutoff valve are housed in the heating auxiliary unit, The heat source side unit is located above the utilization side unit, and the heating auxiliary unit is located below the utilization side unit.

Therefore, the warm medium transfer device can be stopped during the heating operation. Therefore, since the load on the refrigerant carrier device can be reduced, the refrigerant carrier device can be downsized, and the height difference between the heat source side unit and the use side unit can be increased.

Further, the compressor, the heat source side four-way valve, the heat source side heat exchanger, the pressure reducing device, the first solenoid valve for cooling which is opened during cooling,
1st auxiliary heat exchanger for cooling, 2nd cooling for opening during cooling
A heat source side cooling cycle consisting of a solenoid valve connected in an annular shape,
The compressor, the heat source side four-way valve, the heat source side heat exchanger,
The pressure reducing device, the small liquid pipe connecting the heat source side four-way valve and the second cooling solenoid valve, the first solenoid valve for heating that is opened during heating, the first auxiliary heat exchanger for heating, and the heating that is opened during heating. Second electromagnetic valve, a heat source side heating cycle in which a multi-liquid pipe connecting the pressure reducing device and the cooling first electromagnetic valve is connected in an annular shape, and the first auxiliary heat exchanger for cooling is integrated. A second auxiliary heat exchanger for cooling that forms and exchanges heat, a refrigerant transfer device, a plurality of usage-side units that include a usage-side heat exchanger and a capacity control valve, a cooling shut-off valve that closes during cooling, the first auxiliary for heating A second auxiliary heat exchanger for heating that is integrally formed with the heat exchanger to exchange heat, a utilization side cycle in which a heating cutoff valve that is closed during heating is connected in an annular shape, the compressor, the heat source side four-way valve, and the heat source The side heat exchanger and the decompression device are housed in a heat source unit, Device, first cooling auxiliary heat exchanger, second cooling second auxiliary heat exchanger, first cooling solenoid valve, second cooling solenoid valve, first heating solenoid valve, first heating solenoid 2 The solenoid valve and the heating cutoff valve are housed in the cooling auxiliary unit, and the first heating auxiliary heat exchanger, the second heating auxiliary heat exchanger and the cooling cutoff valve are housed in the auxiliary heating unit. The cooling auxiliary unit is located above the utilization side unit, and the heating auxiliary unit is located below the utilization side unit.

Therefore, the load of the heating refrigerant transfer device can be reduced during the heating operation regardless of the vertical position relationship between the heat source side unit and the use side unit.

Therefore, the refrigerant transfer device can be downsized and the heat source side unit can be installed at an arbitrary position, so that the degree of freedom in equipment design can be increased.

Further, the compressor, the heat source side four-way valve, the heat source side heat exchanger, the pressure reducing device, the first electromagnetic valve for cooling which is opened during cooling, the first auxiliary heat exchanger for cooling, and the first cooling air conditioner which is opened during cooling. A heat source side cooling cycle in which two solenoid valves are connected in an annular shape, the compressor, the heat source side four-way valve, the heat source side heat exchanger, the pressure reducing device, the heat source side four-way valve, and the second cooling air-cooling valve. A small liquid pipe connected to the valve, a first solenoid valve for heating which is opened during heating, a first auxiliary heat exchanger for heating, a second solenoid valve for heating which is opened during heating, the pressure reducing device and the first solenoid for cooling. A heat source side heating cycle in which a multi-liquid pipe connected to a valve is connected in an annular shape, and a second auxiliary heat exchanger for cooling that is integrally formed with the first auxiliary heat exchanger for cooling to exchange heat, and a refrigerant. The transfer device is provided in the middle of a communication pipe that connects the discharge port and the suction port of the refrigerant transfer device. A medium transfer device bypass valve, a plurality of use side units including a use side heat exchanger and a capacity control valve, a cooling shutoff valve that closes during cooling, and a heating unit that integrally forms heat with the first auxiliary heat exchanger for heating. A second auxiliary heat exchanger, a utilization-side cycle in which a heating cutoff valve that is closed during heating is connected in an annular shape, and the compressor, the heat-source-side four-way valve, the heat-source-side heat exchanger, and the decompression device are housed in a heat-source unit. Was
The refrigerant transfer device, the cooling first auxiliary heat exchanger, the cooling second auxiliary heat exchanger, the cooling first solenoid valve, the cooling second solenoid valve, the heating first solenoid valve, the The second electromagnetic valve for heating, the heating cutoff valve, and the refrigerant transfer device bypass valve are housed in the cooling auxiliary unit, and the first heating valve is used.
The auxiliary heat exchanger, the heating second auxiliary heat exchanger, and the cooling shutoff valve are housed in the heating auxiliary unit, and the cooling auxiliary unit is located above the utilization side unit, and the heating auxiliary unit is It is located below the user side unit.

Therefore, the refrigerant transfer device can be stopped even during the cooling operation. Therefore, it is possible to reduce the load on the refrigerant transfer device, downsize the refrigerant transfer device, improve the high lift performance of the system, and reduce the power consumption of the refrigerant transfer device, thus improving energy efficiency.

[Brief description of drawings]

FIG. 1 is a refrigerant cycle diagram of a multi-room cooling and heating apparatus according to a first embodiment of the present invention.

FIG. 2 is a refrigerant cycle diagram of a multi-room cooling and heating apparatus according to a second embodiment of the present invention.

FIG. 3 is a refrigerant cycle diagram of a multi-room air conditioner according to a third embodiment of the present invention.

FIG. 4 is a refrigerant cycle diagram of a conventional multi-room cooling and heating device.

[Explanation of symbols]

 1 Compressor 2 Heat source side four way valve 3 Heat source side heat exchanger 4 Pressure reducing device 8 Refrigerant carrier 10 ', 10' 'Heat source side unit 11a, 11b, 11c Use side heat exchanger 12a, 12b, 12c Capacity control valve 13a, 13b, 13c Use side unit 16 'Use side refrigerant cycle 17 Cooling first auxiliary heat exchanger 18 Cooling second auxiliary heat exchanger 19 Cooling first solenoid valve 20 Cooling second solenoid valve 21 Small liquid pipe 22 Multi Liquid pipe 23 Heat source side cooling cycle 24 First heating auxiliary heat exchanger 25 Second heating second auxiliary heat exchanger 26 First heating solenoid valve 27 Second heating solenoid valve 28 Heat source side heating cycle 29 Heating shutoff valve 30 Cooling Shut-off valve 31 Heating auxiliary unit 32 Cooling auxiliary unit 33 Refrigerant carrier bypass valve

Claims (3)

[Claims] 1. A compressor, a heat source side four-way valve, a heat source side heat exchanger, a pressure reducing device, a first electromagnetic valve for cooling which is opened during cooling, a first auxiliary heat exchanger for cooling, and a second cooling side which is opened during cooling. A heat source side cooling cycle in which a solenoid valve is connected in an annular shape, the compressor, the heat source side four-way valve, the heat source side heat exchanger, the pressure reducing device, the heat source side four-way valve and the second cooling second solenoid valve And a small liquid pipe connected to each other, a first solenoid valve for heating which is opened during heating, a first auxiliary heat exchanger for heating, a second solenoid valve for heating which is opened during heating, the pressure reducing device and the first solenoid valve for cooling. A heat source side heating cycle in which a multi-liquid pipe connected to the above is annularly connected, and a second cooling auxiliary heat exchanger for integrally exchanging heat with the first cooling auxiliary heat exchanger, and a refrigerant transfer device. , A plurality of usage-side units consisting of a usage-side heat exchanger and a capacity control valve, cooling that closes during cooling A utilization side cycle in which a shutoff valve, a second heating auxiliary heat exchanger that is integrally formed with the first heating auxiliary heat exchanger to exchange heat, and a heating shutoff valve that is closed during heating are connected in an annular shape, and the compressor. The heat source side four-way valve, the heat source side heat exchanger, the pressure reducing device, the refrigerant transfer device,
The first auxiliary heat exchanger for cooling, the second auxiliary heat exchanger for cooling, the first electromagnetic valve for cooling, the second electromagnetic valve for cooling,
The first solenoid valve for heating, the second solenoid valve for heating, and the heating cutoff valve are housed in a heat source side unit, and the first auxiliary heat exchanger for heating, the second auxiliary heat exchanger for heating, and the cooling system. The shutoff valve is housed in a heating auxiliary unit, the heat source side unit is located above the utilization side unit, and the heating auxiliary unit is located below the utilization side unit. 2. A compressor, a heat source side four-way valve, a heat source side heat exchanger, a pressure reducing device, a first solenoid valve for cooling which is opened during cooling, a first auxiliary heat exchanger for cooling, and a second cooling side which is opened during cooling. A heat source side cooling cycle in which a solenoid valve is connected in an annular shape, the compressor, the heat source side four-way valve, the heat source side heat exchanger, the pressure reducing device, the heat source side four-way valve and the second cooling second solenoid valve And a small liquid pipe connected to each other, a first solenoid valve for heating which is opened during heating, a first auxiliary heat exchanger for heating, a second solenoid valve for heating which is opened during heating, the pressure reducing device and the first solenoid valve for cooling. A heat source side heating cycle in which a multi-liquid pipe that is connected to the above is connected in an annular shape, a second auxiliary heat exchanger for cooling that integrally forms heat exchange with the first auxiliary heat exchanger for cooling, and refrigerant transfer Equipment, multiple heat exchangers consisting of heat exchangers on the usage side and capacity control valves, and a cooling device that closes during cooling. A utilization side cycle in which a tuft shutoff valve, a heating second auxiliary heat exchanger that is integrally formed with the heating first auxiliary heat exchanger and exchanges heat, and a heating shutoff valve that is closed during heating are connected in an annular shape, and the compression Machine, the heat source side four-way valve, the heat source side heat exchanger, the pressure reducing device is housed in a heat source unit, the refrigerant transfer device, the cooling first auxiliary heat exchanger, the cooling second auxiliary heat exchanger, The first electromagnetic valve for cooling, the second electromagnetic valve for cooling, the first electromagnetic valve for heating, the second electromagnetic valve for heating, and the heating cutoff valve are housed in a cooling auxiliary unit, and the first auxiliary for heating is provided. The heat exchanger, the second auxiliary heat exchanger for heating, and the cooling shutoff valve are housed in a heating auxiliary unit, the cooling auxiliary unit is located above the utilization side unit, and the heating auxiliary unit is Located below the user unit Multi-room air conditioner to be. 3. A compressor, a heat source side four-way valve, a heat source side heat exchanger, a pressure reducing device, a first solenoid valve for cooling which is opened during cooling, a first auxiliary heat exchanger for cooling, and a second cooling side which is opened during cooling. A heat source side cooling cycle in which a solenoid valve is connected in an annular shape, the compressor, the heat source side four-way valve, the heat source side heat exchanger, the pressure reducing device, the heat source side four-way valve and the second cooling second solenoid valve And a small liquid pipe connected to each other, a first solenoid valve for heating which is opened during heating, a first auxiliary heat exchanger for heating, a second solenoid valve for heating which is opened during heating, the pressure reducing device and the first solenoid valve for cooling. A heat source side heating cycle in which a multi-liquid pipe that is connected to the above is connected in an annular shape, a second auxiliary heat exchanger for cooling that integrally forms heat exchange with the first auxiliary heat exchanger for cooling, and refrigerant transfer Device, a refrigerant transfer device provided in the middle of a communication pipe that connects the discharge port and the suction port of the refrigerant transfer device By-pass valve, a plurality of use-side units including a use-side heat exchanger and a capacity control valve, a cooling shut-off valve that closes during cooling, a second auxiliary for heating that is integrally formed with the first auxiliary heat exchanger for heating to exchange heat. A heat exchanger, a utilization side cycle in which a heating cutoff valve that is closed during heating is connected in an annular shape, the compressor, the heat source side four-way valve, the heat source side heat exchanger, and the pressure reducing device are housed in a heat source unit, and Refrigerant carrier, the cooling first auxiliary heat exchanger, the cooling second auxiliary heat exchanger, the cooling first solenoid valve, the cooling second solenoid valve, the heating first solenoid valve, the heating The second solenoid valve for heating, the heating cutoff valve, and the refrigerant transfer device bypass valve are housed in the cooling auxiliary unit, and the first auxiliary heat exchanger for heating, the second auxiliary heat exchanger for heating, and the cooling cutoff valve are When stored in the auxiliary heating unit The cooling auxiliary unit is located above the said use-side unit,
The heating auxiliary unit is a multi-room cooling and heating apparatus located below the use side unit.