KR20140125525A - An air conditioning system - Google Patents

Abstract

An air conditioning system according to the present invention comprises an outdoor unit arranged at an outdoor space and equipped with a compressor and an outdoor heat exchange; a plurality of indoor units arranged at an indoor space and equipped with an indoor heat exchange; and an air-liquid separation unit separating a cooling medium, discharged from the outdoor unit, into a gaseous cooling medium and a liquefied cooling medium, wherein the gas-liquid separation unit includes a hot water supply heat exchange exchanging heat with the gaseous cooling medium of the cooling medium passing through the gas-liquid separation unit; and a supercooling unit additionally cooling the liquefied cooling medium separated by the gas-liquid separation unit.

Description

An air conditioning system

The present invention relates to an air conditioning system.

The air conditioner is a device for adjusting the room temperature by discharging cold air into the room to create a pleasant indoor environment. The air conditioner may also be provided with an air cleaning function for purifying indoor air.

Generally, the air conditioner includes an indoor unit installed in a room, and an outdoor unit mounted with a number of components such as a compressor and a heat exchanger to supply the refrigerant to the indoor unit. At least one indoor unit may be connected to the outdoor unit. Also, the air conditioner may be operated in a cooling or heating mode by supplying the refrigerant to the indoor unit. The cooling mode or the heating mode, which is an operating mode of the air conditioner, can be changed according to a driving state requested by a user.

That is, the air conditioner may perform the cooling operation or the heating operation according to the flow of the refrigerant.

First, the flow of the refrigerant when the cooling operation is performed in the air conditioner will be described. The refrigerant compressed in the compressor of the outdoor unit becomes a liquid refrigerant of high temperature and high pressure through the heat exchanger of the outdoor unit. When the liquid refrigerant is supplied to the indoor unit, the refrigerant expands in the heat exchanger of the indoor unit, and vaporization may occur. The temperature of the surrounding air is lowered due to the vaporization phenomenon. And, the indoor fan can rotate and cool air can be discharged into the room.

The flow of the refrigerant when the heating operation is performed in the air conditioner is as follows. When the gas refrigerant of high temperature and high pressure is supplied to the indoor unit from the compressor of the outdoor unit, the gas refrigerant of high temperature and high pressure can be liquefied in the heat exchanger of the indoor unit. The energy released by the liquefaction phenomenon raises the temperature of the ambient air. And, the indoor fan can rotate, and warm air can be discharged to the room.

The air conditioner is divided into an air conditioner having one indoor unit connected to one outdoor unit and a plurality of indoor units connected to one outdoor unit, and a multi-type air conditioner having the same effect as installing several air conditioners .

On the other hand, in a multi-type air conditioner used recently, a distributor may be installed between a plurality of indoor units and an outdoor unit. The distributor can control the flow of the refrigerant and smoothly guide the flow of the refrigerant to the indoor unit.

The application No. 10-2011-0005942 (entitled "Multi-type air conditioner") discloses the configuration of the multi-type air conditioner and the flow of refrigerant flowing to the indoor unit when the multi-type air conditioner operates .

Recently, a simultaneous type air conditioner is used in which a plurality of rooms partitioned in the room when the multi-type air conditioner is operated are operated in the cooling mode while others are operated in the heating mode.

In the multi-type air conditioner of the present invention, a plurality of indoor units are operated in a cooling mode, and a part of the indoor units are operated in a heating mode. .

The multi-type air conditioner may include an outdoor unit, an indoor unit, and a distribution unit that distributes the refrigerant introduced from the outdoor unit to the indoor unit. The outdoor unit and the distribution unit are connected through three pipes, and the distribution unit and the indoor unit can be connected through two pipes.

However, when the outdoor unit and the distribution unit are connected through three pipes, the installation and assembly of the outdoor unit and the distribution unit are complicated and the welds for connecting the pipe and the outdoor unit (or the distribution unit) There is a problem that reliability is lowered.

Further, when installing a hot water heat exchanger for condensing the refrigerant flowing between the outdoor unit and the indoor unit, there is a problem that the installation position of the hot water heat exchanger is limited and the structure for installing the hot water supply pipe and the hot water supply valve becomes complicated.

It is an object of the present invention to provide an air conditioning system in which air conditioning and hot water supply of an indoor space can be both performed in a cooling or heating operation of a multi-type air conditioner.

An air conditioning system according to the present invention includes: an outdoor unit disposed in an outdoor space and having a compressor and an outdoor heat exchanger; A plurality of indoor units arranged in an indoor space and equipped with an indoor heat exchanger; And a gas-liquid separator for separating the gas-phase refrigerant and the liquid-phase refrigerant from the refrigerant discharged from the outdoor unit, wherein the gas-liquid separator includes a gas-liquid separator, ; And a supercooler for further cooling the liquid refrigerant separated in the gas-liquid separator.

According to the present invention, a gas-liquid separating unit is provided between an outdoor unit and an indoor unit, and the outdoor unit and the gas-liquid separating unit are connected by a double pipe, so that the material cost is reduced and the welding part for connection is reduced, There is an advantage that it can be.

Further, since the gas-liquid separation unit is provided, the simultaneous operation in which the air conditioning system simultaneously performs cooling or heating operation and the switching-type operation in which the cooling or heating operation is switched and operated can be performed for the same outdoor unit configuration .

In addition, since the hot water heat exchanger is disposed in the gas-liquid separating unit and the air conditioner is provided with a plurality of valves for guiding the movement of the refrigerant that has passed through the hot water heat exchanger, it is possible to smoothly perform air conditioning and hot- .

Further, since the gas-liquid separating unit can be used by connecting the distributing unit in series, there is an advantage that the degree of freedom of installation of the air-conditioning system can be increased.

1 is a view showing a configuration of an air conditioning system according to a first embodiment of the present invention.
2 is a cycle diagram showing a detailed configuration of an air conditioning system according to a first embodiment of the present invention.
3 is a view showing a flow of a refrigerant in a heating operation in the air conditioning system according to the first embodiment of the present invention.
4 is a view showing a flow of a refrigerant in a cooling operation in the air conditioning system according to the first embodiment of the present invention.
5 is a view showing a configuration of an air conditioning system according to a second embodiment of the present invention.

Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. It is to be understood, however, that the spirit of the invention is not limited to the embodiments shown and that those skilled in the art, upon reading and understanding the spirit of the invention, may easily suggest other embodiments within the scope of the same concept.

1 is a view showing a configuration of an air conditioning system according to a first embodiment of the present invention.

Referring to FIG. 1, the air conditioning system 10 according to the first embodiment of the present invention may include an outdoor unit 100, a gas-liquid separation unit 200, and a plurality of indoor units 400. The air conditioning system 10 may further include a distribution unit (not shown) disposed between the gas-liquid separation unit 200 and the plurality of indoor units 400. The connection relationship between the distribution unit (not shown) and other components will be described later (see FIG. 5).

The gas-liquid separation unit 200 is detachably coupled to the outdoor unit 100. The air conditioning system 10 includes two pipes 191 and 192 connecting the outdoor unit 100 and the gas-liquid separation unit 200. The two pipings 191 and 192 include a first connection pipe 191 and a second connection pipe 192 which are connected to one side of the gas-liquid separation unit 200.

The gas-liquid separation unit 200 is provided with a piping connection part 201 to which the first connection piping 191 and the second connection piping 192 are detachably coupled. That is, the gas-liquid separation unit 200 may include two pipe connection portions 201.

The gas-liquid separation unit 200 may be connected to a plurality of indoor units 400 through piping. The plurality of indoor units 400 includes a first indoor unit 401 and a second indoor unit 402 that operate to air-condition the indoor space by the operation of the air conditioner, (403). The first indoor unit 401 and the second indoor unit 402 may be referred to as air conditioning indoor units.

Hereinafter, the detailed configuration of the air conditioning system 10 will be described.

2 is a cycle diagram showing a detailed configuration of an air conditioning system according to a first embodiment of the present invention.

2, the air conditioning system 10 according to the first embodiment of the present invention includes an outdoor unit 100 disposed outdoors, a gas-liquid separation unit 200 connected to the outdoor unit 100, And a plurality of indoor units 400 connected to the gas-liquid separation unit 200 and performing heat exchange with indoor air.

The indoor unit 400 may include an indoor heat exchanger (not shown) for exchanging heat with air in the indoor space, and an expansion unit (not shown) for expanding the refrigerant flowing into the indoor heat exchanger (not shown).

The outdoor unit 100 includes a compressor 101 and an accumulator 105 disposed at the inlet side of the compressor 101 and separating the liquid refrigerant and the gaseous refrigerant from the refrigerant to be introduced into the compressor 101. The gaseous refrigerant separated from the accumulator 105 may be introduced into the compressor 101.

The outdoor unit 100 is provided with a flow path switching unit 107 for guiding the movement of the refrigerant compressed by the compressor 101 to the outdoor heat exchangers 111 and 112 or the gas-liquid separation unit 200 side . The flow path switching unit 107 may include a four-way valve.

When the air conditioner performs the cooling operation, the refrigerant flows from the flow path switching unit 107 to the outdoor heat exchangers 111 and 112. On the other hand, when the air conditioner performs the heating operation, the refrigerant flows into the gas-liquid separation unit 200 from the flow path switching unit 107.

The outdoor unit 100 may include an inlet pipe 109 connecting the outdoor heat exchangers 111 and 112 to the accumulator 105.

The outdoor heat exchangers (111, 112) include a plurality of heat exchangers. The plurality of heat exchanging units include a first heat exchanging unit 111 and a second heat exchanging unit 112 connected in parallel.

The first heat exchange unit 111 may be connected to the second heat exchange unit 112 by a heat exchange pipe 123. The heat exchange pipe (123) may be provided with a heat exchange valve (121) for determining whether or not the refrigerant moves. The heat exchange pipe 123 may be provided with a check valve 122 for guiding the movement of the refrigerant in one direction.

When the heat exchange valve 121 is opened, the refrigerant moved along the first heat exchange unit 111 can be moved to the second heat exchange unit 112 along the heat exchange pipe 123. That is, since the refrigerant passing through the compressor 101 sequentially passes through the first heat exchanging unit 111 and the second heat exchanging unit 112, heat exchange efficiency can be improved.

The air conditioning system 10 according to the present embodiment further includes a control unit (not shown) for controlling the heat exchange valve 121 to open during cooling operation and closing the heat exchange valve 121 during heating operation You may.

The outdoor unit 100 is provided with a first outdoor pipe 113 extending to the outlet side of the first heat exchange unit 111 and a second outdoor expansion unit 113 provided in the first outdoor pipe 113 to control the flow of the refrigerant, Apparatus 118 is included.

The outdoor unit 100 is provided with a second outdoor pipe 114 extending from the outlet of the second heat exchange unit 112 and a second outdoor pipe 114 provided in the second outdoor pipe 114 to control the flow of the refrigerant. An outdoor expansion device 119 is included.

The amount of the refrigerant flowing through the first heat exchanger 111 and the first outdoor pipe 113 is increased when the first outdoor expansion device 118 is opened or opened. When the second outdoor expansion device 119 is opened or opened, the amount of the refrigerant flowing through the second heat exchange part 112 and the second outdoor pipe 114 is increased.

Meanwhile, the first outdoor expansion device 118 and the second outdoor expansion device 119 may be connected in parallel. The first outdoor expansion device 118 or the second outdoor expansion device 119 may be an electronic expansion valve and may be a refrigerant introduced into the outdoor heat exchangers 111 and 112 during a heating operation, . ≪ / RTI >

The outdoor unit 100 includes an outdoor joint part 120 that joins the refrigerant that has passed through the first outdoor expansion device 118 and the second outdoor expansion device 119 during a cooling operation. The refrigerant mixed in the outdoor joint part 120 may be discharged from the outdoor unit 100 and may be introduced into the gas-liquid separation unit 200. Meanwhile, the outdoor joint part 120 may perform the function of branching the refrigerant to the first outdoor pipe 113 or the second outdoor pipe 114 during the heating operation. Therefore, the outdoor joint portion 120 may be referred to as an "outdoor branch portion ".

The air conditioning system 10 according to the present embodiment includes a first connection pipe 191 and a second connection pipe 192 for connecting the outdoor unit 100 and the gas-liquid separation unit 200. The first connection pipe 191 may extend from the flow path switching unit 107 and the second connection pipe 192 may extend from the outdoor connection unit 120.

The gas-liquid separation unit 200 includes a pipe connection part 201 detachably coupled to the first connection pipe 191 and the second connection pipe 192. Accordingly, the number of the pipe connection units 201 may be two.

The gas-liquid separation unit 200 includes bridge circuits 221 and 225 for guiding the refrigerant introduced into the gas-liquid separation unit 200 through the first connection pipe 191 or the second connection pipe 192 do.

The bridge circuits 221 and 225 include a first bridge pipe 221 and a second bridge pipe 225.

The first bridging pipe 221 is coupled to the first connecting pipe 191 and guides the refrigerant flowing through the first connecting pipe 191 to the gas-liquid separator 210 during heating operation. The second bridging pipe 225 is connected to the second connection pipe 192 and can guide the refrigerant flowing through the second connection pipe 192 to the gas-liquid separator 210 during the cooling operation have.

The bridge circuits 221 and 225 include a first check valve 221a provided to the first bridge pipe 221 and a second check valve 225a provided to the second bridge pipe 225 . The first check valve 221a and the second check valve 225a guide the unidirectional flow of the refrigerant in the piping 221, 225.

A third check valve 226 is provided on one side of the bridge circuits 221, 225. The third check valve 226 may guide the refrigerant introduced into the gas-liquid separation unit 200 to flow into the first bridge pipe 221 through the first connection pipe 191.

The gas-liquid separator (200) includes the gas-liquid separator (210) for separating gas-phase and liquid-phase refrigerants into which the refrigerant flowing in the first bridge pipe (221) flows.

The gaseous refrigerant separated in the gas-liquid separator 210 flows into the hot water heat exchanger 300 along the hot water pipe 280 and the separated liquid refrigerant flows into the supercooler 230 along the supercool pipe 240 have. The subcooler 230 is disposed at the outlet side of the gas-liquid separator 210.

The subcooler 230 can be understood as an intermediate heat exchanger in which a first refrigerant circulating through the system 10 and a refrigerant (a second refrigerant) of a portion of the first refrigerant are branched and then heat-exchanged.

The gas-liquid separation unit (200) includes a supercooling flow path (231) through which the second refrigerant is branched. The supercooling passage 231 is provided with a supercooling expansion device 235 for reducing the pressure of the second refrigerant. The supercooling expansion device 235 may include an EEV (Electric Expansion Valve).

The first synthesis pipe 245 and the first flow control unit 241 provided in the first synthesis pipe 245 are provided at the outlet side of the subcooler 230. The first flow rate regulator 241 may be configured to regulate the amount of the first refrigerant passing through the subcooler 230.

The gas-liquid separation unit 200 is extended from one point of the first manifold pipe 245 and is returned to the gas-liquid separation unit 200 after passing through the indoor unit 400 during a heating operation. And a second flow rate regulator 243 for regulating the amount of the refrigerant.

In the cooling operation of the air conditioner, the first composite pipe 245 may be defined as a passage through which the refrigerant discharged from the subcooler 230 moves. One side of the first manifold pipe 245 may be connected to one side of the second manifold pipe 246 which is a passage of the refrigerant condensed by the hot water heat exchanger 300. The refrigerant passing through the first joint pipe (245) and the refrigerant passing through the second joint pipe (246) may be joined together at the hot water supply joint part (247).

The refrigerant mixed in the hot water supply fitting 247 may be introduced into the air conditioning indoor units 401 and 402 through the first guide pipe 272.

The air conditioning indoor units 401 and 402 are provided with an indoor heat exchanger (not shown) and an indoor expansion unit (not shown). When the indoor / outdoor unit is in the cooling operation mode, the refrigerant introduced into the indoor / outdoor unit may be decompressed in the indoor expansion unit (not shown) and then evaporated in the indoor heat exchanger (not shown).

The indoor heat exchanger (not shown) may be connected to the second guide pipe 273. The second guide pipe 273 may be provided with an outlet valve 360 for guiding the movement of the refrigerant. For example, when the outflow valve 360 is turned on during the cooling operation of the air conditioner, the refrigerant passing through the second guide pipe 273 can be moved to the compressor 101.

One side of the hot water pipe 280 may be branched into a first branch pipe 330 connected to the air conditioning indoor unit and a second branch pipe 331 connected to the hot water heat exchanger 300. The first branch pipe 330 may be provided with an inlet valve 350 for guiding the movement of the refrigerant. When the inlet valve 350 is turned on during the heating operation of the air conditioner, a part of the refrigerant moving along the hot water supply pipe 280 flows along the first guide pipe 272 to the air conditioning indoor units 401 and 402 ). ≪ / RTI >

The indoor unit 400 includes an air conditioning indoor unit 401 and an air conditioning indoor unit 401 through which the indoor space is air conditioned by the operation of the air conditioner and a hot water supply indoor unit 402 through which the indoor space is air- (403). For example, the hot water supply indoor unit 403 may be a water tank installed indoors.

The hot water heat exchanger 300 includes a hot water inflow pipe 310 for guiding the inflow of refrigerant to the hot water supply indoor unit 403 and a hot water inflow pipe 310 for guiding the movement of the refrigerant from the hot water supply indoor unit 403 to the hot water heat exchanger 300 And may be connected to the hot water outlet pipe 320.

3 is a view showing a flow of a refrigerant in a heating operation in the air conditioning system according to the first embodiment of the present invention.

Referring to FIG. 3, the refrigerant compressed by the compressor 101 may flow through the first connection pipe 191 through the flow path switching unit 107. The refrigerant moved along the first connecting pipe 191 flows into the first bridging pipe 221. At this time, the refrigerant can be easily guided to the first bridge pipe 221 by the third check valve 226 and may be introduced into the gas-liquid separator 210.

The refrigerant flowing into the gas-liquid separator 210 is a high-pressure gas-phase refrigerant. The gaseous refrigerant separated by the gas-liquid separator 210 can be moved along the hot water pipe 280. On the other hand, the supercooling expansion device 235 and the first flow rate regulator 241 are closed, so that the refrigerant does not flow into the subcooler 230.

A part of the refrigerant moved along the hot water supply pipe 280 can be moved to the hot water heat exchanger 300. The high-temperature and high-pressure refrigerant can be condensed by the hot water heat exchanger (300). The refrigerant that has passed through the hot water heat exchanger 300 can be moved to the hot water supply fitting portion 247 along the second joint pipe 246. At this time, the refrigerant can be heat-exchanged with water moving in the hot water inflow pipe 310 and the hot water inflow pipe 320. Therefore, the water-heating indoor unit 403 can be supplied with heat-exchanged water with the refrigerant.

The refrigerant may be passed through the second bridge pipe 225 and then moved to the compressor 101 again.

Meanwhile, another portion of the refrigerant moved along the hot water supply pipe 280 may be moved to the first branch pipe 330 branched from the hot water supply pipe 280. An inlet valve 350 may be installed in the first branch pipe 330. Therefore, the inlet valve 350 can be opened during the heating operation of the air conditioner. That is, the air conditioning system 10 according to the present invention may further include a control unit (not shown) for controlling the inflow valve 350 to open during the heating operation of the air conditioner.

The refrigerant moved along the first branch pipe 330 can be branched and moved to the air conditioning indoor units 401 and 402 along the second guide pipe 273, respectively. The refrigerant circulated in the indoor space by the indoor units (401, 402) can be moved along the first guide pipe (272). The refrigerant having passed through the first guide pipe 272 may be moved to the compressor 101 through the second bridge pipe 225. At this time, the second flow control unit 243 for controlling the amount of the refrigerant returning to the gas-liquid separation unit 200 after passing through the indoor unit 400 may be opened.

Hereinafter, the flow of the refrigerant during the cooling operation of the air conditioner will be described.

4 is a view showing a flow of a refrigerant in a cooling operation in the air conditioning system according to the first embodiment of the present invention.

Referring to FIG. 4, the refrigerant compressed in the compressor 101 flows into the first outdoor heat exchanging unit 111 through the flow path switching unit 107 and is condensed. At this time, the heat exchange valve 121 installed in the heat exchange pipe 123 can be opened. A part of the refrigerant that has passed through the first outdoor heat exchange unit 111 flows through the first outdoor pipe 113 and the remaining part of the refrigerant flows through the second outdoor heat exchange unit 112 via the heat exchange valve 121, And is condensed.

The refrigerant discharged from the second outdoor heat exchanging unit (112) can be discharged from the outdoor unit (100) via the second outdoor pipe (114).

That is, when the air conditioner operates in the cooling mode, the heat exchange valve 121 is opened, and the refrigerant can sequentially pass through the plurality of heat exchanging units 111 and 112 and be condensed. However, if the required cooling capacity is low, the heat exchange valve 121 may be closed so that the refrigerant passes through the first heat exchange unit 111 only.

The refrigerant discharged from the outdoor unit (100) flows through the second connection pipe (192) and may be introduced into the gas-liquid separator (210).

The refrigerant flowing into the gas-liquid separator 210 is mainly composed of liquid refrigerant as condensed refrigerant. However, some of the condensed refrigerant may be a gaseous refrigerant. The liquid refrigerant separated in the gas-liquid separator 210 may be moved to the first synthesis pipe 245 through the subcooler 230 and the first flow rate regulator 241.

At this time, the supercooling expansion unit 235 and the first flow rate control unit 241 are opened, and the supercooler 230 can cool the refrigerant. The supercooling degree of the first refrigerant or the superheating degree of the second refrigerant in the supercooler 230 can be controlled according to the opening degree of the supercooling expansion unit 235. [

The refrigerant moved to the first manifold pipe 245 may be moved to the air conditioning indoor units 401 and 402 along the first guide pipe 272. The refrigerant evaporated in the plurality of indoor units 400 flows into the gas-liquid separating unit 200 along the second guide pipe 273.

The gaseous refrigerant that has passed through the gas-liquid separator 210 can be moved to the hot water heat exchanger 300 along the hot water pipe 280. The hot water heat exchanger 300 may condense the refrigerant so that the gaseous refrigerant is phase-changed into a liquid state.

The refrigerant condensed by the hot water heat exchanger (300) can be moved along the second joint pipe (246). One side of the second manifold pipe 246 may communicate with one side of the first manifold pipe 245. Therefore, the refrigerant that has passed through the first tubesheet pipe 245 can be joined to the refrigerant passing through the second tubesheet pipe assembly 246 and the hot water supply fittings 247.

The refrigerant piped in the hot water supply piping 247 can be branched and moved to the air conditioning indoor units 401 and 402 along the first guide pipe 272. The refrigerant circulated in the indoor space by the indoor units (401, 402) can be moved along the second guide pipe (273). The refrigerant that has passed through the second guide pipe 273 may be moved to the first connection pipe 191 through the outlet valve 360 provided in the first branch pipe 330. That is, the outflow valve 360 may be opened during the cooling operation of the air conditioner. In other words, the air conditioning system 10 according to the present invention may further include a control unit (not shown) for controlling the opening of the outflow valve 360 during a cooling operation of the air conditioner.

The refrigerant having passed through the outflow valve 360 may be moved back to the compressor 101 along the first connection pipe 191.

5 is a view showing a configuration of an air conditioning system according to a second embodiment of the present invention.

5, the air conditioning system 10 according to the second embodiment of the present invention includes an outdoor unit 100, a gas-liquid separation unit 200, a distribution unit 300, a plurality of indoor units 400, .

In detail, the gas-liquid separation unit 200 is detachably coupled to the outdoor unit 100. The air conditioning system 10 includes two pipes 191 and 192 connecting the outdoor unit 100 and the gas-liquid separation unit 200. The two pipings 191 and 192 include a first connection pipe 191 and a second connection pipe 192 which are connected to one side of the gas-liquid separation unit 200.

The gas-liquid separation unit 200 is provided with a piping connection part 201 to which the first connection piping 191 and the second connection piping 192 are detachably coupled. That is, the gas-liquid separation unit 200 includes two pipe connection portions 201.

The air conditioning system 10 includes three pipes 193, 194 and 195 for connecting the gas-liquid separation unit 200 and the distribution unit 300. A third connection pipe 193 connected to the other side of the gas-liquid separation unit 200 and a fourth connection pipe 194 and a fifth connection pipe 195 are connected to the three pipes 193, 194, .

The air conditioning system 10 includes a plurality of distribution pipes 390 connecting the distribution unit 300 and the plurality of indoor units 400. The distribution pipe connecting the distribution unit 300 and the indoor unit 400 is provided with an inlet pipe for guiding the inflow of the refrigerant into the indoor unit 400 and an outlet pipe for guiding the refrigerant from the indoor unit 400, May be included.

The plurality of indoor units 400 may include a hot water supply indoor unit 403 in which the indoor space is hot water by the operation of the air conditioning indoor unit including the first indoor unit 401 and the second indoor unit 402 and the hot water supply unit.

In FIG. 5, one distribution unit 300 is shown as being coupled, however, an additional distribution unit may be further coupled. For example, an additional distribution unit may be connected in series to one side of the distribution unit 300.

As described above, in the gas-liquid separation unit according to the present invention, the hot water heat exchanger is disposed, and the air conditioner is provided with a plurality of valves for guiding the movement of the refrigerant passing through the hot water heat exchanger, There is an effect that can be.

Further, since the gas-liquid separating unit can be used by connecting the distributing unit in series, there is an advantage that the degree of freedom of installation of the air-conditioning system can be increased.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas falling within the scope of the same shall be construed as falling within the scope of the present invention.

10: air conditioning system 100: outdoor unit
101: compressor 105: accumulator
111: first heat exchanger 112: second heat exchanger
200: gas-liquid separation unit 210: gas-liquid separator
221: first bridge piping 225: second bridge piping
230: supercooler 240: supercooling pipe
280: hot water piping 300: hot water heat exchanger
350: inlet valve 360: outlet valve
400: indoor unit

Claims (16)

An outdoor unit disposed in an outdoor space and having a compressor and an outdoor heat exchanger;
A plurality of indoor units arranged in an indoor space and equipped with an indoor heat exchanger; And
And a gas-liquid separator for separating the gas-phase refrigerant and the liquid-phase refrigerant from the refrigerant discharged from the outdoor unit,
In the gas-liquid separation unit,
A hot water heat exchanger for exchanging heat with the gaseous refrigerant in the refrigerant passing through the gas-liquid separator; And
And a supercooler for further cooling the liquid refrigerant separated in the gas-liquid separator. The method according to claim 1,
In the gas-liquid separator,
A supercooled pipe connected to the supercooler; And
And a hot water piping connected to the hot water heat exchanger is installed. 3. The method of claim 2,
During cooling operation,
The gas-phase refrigerant in the refrigerant passing through the gas-liquid separator is moved to the hot water pipe,
And the liquid refrigerant in the refrigerant passing through the gas-liquid separator is moved to the supercooling pipe. 3. The method of claim 2,
During heating operation,
The refrigerant having passed through the gas-
And is moved to the hot water piping. 3. The method of claim 2,
Wherein the plurality of indoor units includes:
A hot water supply indoor unit connected to the hot water heat exchanger to hot water the indoor space; And
And an air conditioning indoor unit connected to the gas-liquid separator for air conditioning the indoor space,
In the gas-liquid separation unit,
An inflow valve for determining whether the refrigerant flowing into the air conditioning indoor unit is to be moved; And
And an outlet valve for determining whether or not the refrigerant discharged from the air conditioning indoor unit is to be moved. 6. The method of claim 5,
During cooling operation,
Wherein the inlet valve is closed and the outlet valve is open. 6. The method of claim 5,
During heating operation,
Wherein the inlet valve is open and the outlet valve is closed. 6. The method of claim 5,
In the air conditioning indoor unit,
And a first guide pipe and a second guide pipe connected to the air conditioning indoor unit and guiding the movement of the refrigerant. 9. The method of claim 8,
During cooling operation,
The refrigerant having passed through the gas-liquid separator flows into the air conditioning indoor unit along the first guide pipe,
During heating operation,
And the refrigerant having passed through the gas-liquid separator flows into the air-conditioning indoor unit along the second guide pipe. 9. The method of claim 8,
At one side of the second guide pipe during cooling operation,
And a hot water supply joint portion in which the refrigerant passing through the supercooler and the refrigerant passing through the hot water heat exchanger are joined together is formed. 9. The method of claim 8,
One side of the hot water pipe
A first branch pipe connected to the air conditioning indoor unit; And
And a second branch pipe connected to the hot water heat exchanger. 12. The method of claim 11,
Wherein the inlet valve is provided in the first branch pipe,
And the outflow valve is installed in the second guide pipe. 6. The method of claim 5,
In the hot water heat exchanger,
A hot water inflow pipe for guiding the movement of the refrigerant flowing into the hot water supply / And
And a hot water outlet pipe for guiding the movement of the refrigerant discharged from the hot water supply indoor unit is provided. The method according to claim 1,
The outdoor heat exchanger (1)
And a first heat exchanging part and a second heat exchanging part for performing heat exchange with the refrigerant,
And a heat exchange pipe connecting the first heat exchanging unit and the second heat exchanging unit. 15. The method of claim 14,
In the heat exchange pipe,
Wherein a heat exchange valve is provided between the first heat exchanging unit and the second heat exchanging unit to determine whether or not the refrigerant moves. 16. The method of claim 15,
Controls to open the heat exchange valve during cooling operation,
And a control unit for controlling the heat exchange valve to be closed when the heating operation is performed.

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