KR100618210B1 - Multi-airconditioner - Google Patents

Abstract

The present invention relates to a multi-type air conditioner capable of simultaneously cooling and heating a plurality of indoor units, and configured to enable connection of refrigerant in various directions of the outdoor unit.

The present invention is provided with a compressor (120 120 120) and an outdoor heat exchanger (180), at least one outdoor unit (100) in which heat exchange occurs; An indoor heat exchanger 202 and an expansion valve 204, and a plurality of indoor units 200 in which heat exchange occurs; A distributor 300 connected between the indoor unit 200 and the outdoor unit 100 to control the flow of the refrigerant according to an operating condition; A liquid pipe 210 provided between the indoor unit 200 and the outdoor unit 100 to guide the flow of the liquid refrigerant; A high pressure engine 214 provided between the indoor unit 200 and the outdoor unit 100 to guide the flow of the high-pressure gas refrigerant; It is provided between the indoor unit (200) and the outdoor unit (100), and has a configuration including a low pressure engine (212) for guiding the flow of low-pressure gas refrigerant; The liquid pipe 210, the high pressure engine 214, and the low pressure engine 212 may be installed to penetrate through outer surfaces of the outdoor unit 100 in various directions. According to the present invention as described above, there is an advantage that the installation of the air conditioner is easy.

Air Conditioner, Air Conditioning, Heating, Simultaneous Operation, Piping Support

Description

Multi Air Conditioner {Multi-airconditioner}

1 is a schematic configuration diagram of a conventional multi-type air conditioner.

Figure 2 is a block diagram showing the configuration of the conventional multi-type air conditioner and the refrigerant flow.

Figure 3 is a perspective view of a conventional multi-type air conditioner outdoor unit.

Figure 4 is an exploded perspective view of a conventional outdoor multi-type air conditioner outdoor unit.

5 is a schematic configuration diagram of a multi-type air conditioner according to the present invention.

Figure 6 is a block diagram of a preferred embodiment of a multi-type air conditioner according to the present invention.

7 is an external perspective view of an outdoor unit constituting a preferred embodiment of the multi-type air conditioner according to the present invention;

Figure 8 is an exploded perspective view showing the internal configuration of the outdoor unit constituting a preferred embodiment of the multi-type air conditioner according to the present invention.

9 is a partial perspective view showing the installation state of the pipe support of the outdoor unit constituting a preferred embodiment of the multi-type air conditioner according to the present invention.

10 is a configuration diagram of an outdoor unit constituting a preferred embodiment of the multi-type air conditioner according to the present invention.

11 is a perspective view of a distributor constituting a preferred embodiment of the multi-type air conditioner according to the present invention;

12 is a block diagram of a distributor constituting a preferred embodiment of the multi-type air conditioner according to the present invention.

13 is an operation configuration showing the refrigerant flow during the operation of the air conditioner of the multi-type air conditioner according to the present invention.

14 is an operation configuration showing the refrigerant flow during the heating operation of the multi-type air conditioner according to the present invention.

15 is an operation configuration showing the refrigerant flow during the operation of the cooling main body of the multi-type air conditioner according to the present invention.

16 is a view showing the operation of the refrigerant flow during the operation of the heating main body of the multi-type air conditioner according to the present invention.

Figure 17 is a perspective view showing a state in which the refrigerant pipe is connected from three directions to the outdoor unit constituting the multi-type air conditioner according to the present invention.

Explanation of symbols on the main parts of the drawings

100. Outdoor unit 102. Outdoor solenoid valve

110. Base Fan 112. Front Panel

112 '. Front Porthole 112 ". Front Porthole Cover

114. Front Grill 116. Front Upper Bracket

120. Constant speed compressor 120 '. Inverter Compressor

122. Oil separator 124. Four-way valve

126. Piping support 128. Service valve

130. Outdoor Supercoolers 132. Accumulators

134,134 '. Front frame 136. Center frame

140. Left control box 140 '. Right control box

142. Voltage Transformers

146 '. Heat dissipation

148. Heat Sink Fan 150. Barrier

152. Air Guide 154. Air Guide Cover

160. Top panel 162. Ventilation

164. Shroud 166. Discharge Grill

170. Blowing fan 172. Fan motor

174. Motor Mount 180. Outdoor Heat Exchanger

182. Front heat exchanger 184. Rear heat exchanger

186. Drain pan 188. Side panel

188 '. Side Through Hole 188 ". Side Through Hole Cover

190. Rear Grill 192. Rear Panel

194. Rear upper bracket 196. Rear frame

198. Air conditioning piping 198 '. Cooling valve

200. Indoor unit 202. Indoor heat exchanger

204. Expansion valve 210. Liquid pipe

210 '. Chamber liquid pipe 212.

212 '. Indoor engine 214. High pressure engine

300. Splitter 310. Splitter Case

320. Divider cover 330. Main valve

332. Auxiliary valves 340. Branch pipes

350. Simultaneous supercooler 352. Bypass tube

354. Supercooling control valve 360. Refrigerant connector

The present invention relates to an air conditioner, and more particularly, to a multi-type air conditioner configured to allow refrigerant pipes to be drawn out and connected from various directions of an outdoor unit.

In general, an air conditioner is a cooling / heating system that cools a room by a repetitive action of inhaling hot air in a room, exchanging heat with a low temperature refrigerant, and then discharging it into the room. -Condenser-Expansion valve-Evaporator which forms a series of cycles.

Recently, in addition to heating and cooling, there are various additional functions such as the air purifying function that inhales and filters contaminated air in the room and makes it into clean air and reinjects it into the room, and the dehumidification function of making humid air into wet and dry air again. It also functions.

Meanwhile, as is well known, an air conditioner may be classified into a separate type air conditioner in which an outdoor unit and an indoor unit are separately installed, and an integrated air conditioner in which the outdoor unit and the indoor unit are installed integrally.

Recently, multi-type air conditioners have been released that can be effectively applied when two or more air conditioners are installed in a home or when an air conditioner is installed in each office in a building having several offices. This multi-type air conditioner is connected to a plurality of indoor units in one outdoor unit, it is possible to obtain the same effect as installing a plurality of separate air conditioner.

1 is a schematic view showing an installation state of a conventional multi-type air conditioner, and FIG. 2 is a block diagram showing a configuration of a conventional multi-type air conditioner and a flow of a refrigerant. Referring to this, the outdoor unit 1 includes a compressor 10, an accumulator 20, an outdoor heat exchanger 30, and the like, and the indoor unit 50 includes an indoor heat exchanger 60 and an expansion valve 70.

In the multi-type air conditioner, a plurality of indoor units 50 are connected to one outdoor unit 1, and a high pressure pipe 80 having a high pressure and a relatively low pressure are connected between the outdoor unit 1 and the indoor unit 50. The low pressure pipes 90 are respectively connected.

When the air conditioner of the configuration described above performs the cooling action, the outdoor heat exchanger 30 of the outdoor unit 1 serves as a condenser to condense the high-temperature / high pressure gaseous refrigerant fed from the compressor 10. The refrigerant condensed as described above is expanded to a low-temperature / low-pressure gas while passing through the expansion valve 70 and is sent to the indoor heat exchanger 60.

The refrigerant introduced into the indoor heat exchanger 60 is converted into a two-phase refrigerant in which gaseous and liquid states of low temperature / low pressure are mixed as heat is exchanged with indoor air. The refrigerant is passed through the accumulator 20 and then sent back to the compressor 10 to form one cycle of the refrigerant.

Next, when the air conditioner performs the heating operation, the flow of the refrigerant and the action of the heat exchanger are reversed. That is, the refrigerant compressed by the compressor 10 flows in the order of the accumulator 20-> indoor heat exchanger 60-> expansion valve 70-> outdoor heat exchanger 30.

At this time, the indoor heat exchanger 60 serves as a condenser for heat exchange between the high temperature and high pressure refrigerant passing through the inside and the indoor air, and the outdoor heat exchanger 30 heat exchanges the low temperature low pressure refrigerant and the outdoor air therein. It acts as an evaporator.

3 and 4 show a conventional outdoor unit 1 in an external perspective view and an exploded perspective view. As shown in these figures, the base fan 2 is formed in the lower portion is seated a number of parts, the front end of the base fan 2 is provided with a front panel 4 to form a front appearance. The front panel 4 includes an upper front panel 4 'provided at an upper side and a front lower panel 4 "provided at a lower side thereof.

The front lower panel 4 "is further provided with a pipe bracket 4" a. That is, the lower end of the front lower panel 4 "is cut to a certain portion, and the cutout is configured to shield the pipe bracket 4" a, and the pipe bracket 4 "a is connected to the high pressure pipe 80. The low pressure pipe (90) is guided to be installed in communication with the indoor unit (50).

A center bracket 6 is installed between the front upper panel 4 'and the front lower panel 4 "to guide the installation. Meanwhile, an upper bracket 6' is provided at the top of the front upper panel 4 '. It is further installed, the end portion of the motor mount 48 'to be described below is fastened to the upper bracket (6').

The front frame 8 is provided at the left and right ends of the front panel 4, that is, at the front left and right edges of the base pan 2. The front frame 8 is formed long and vertically to support the front panel 4 and the side grill 34 to be described below.

The base fan 2 is provided with a compressor 10. The compressor 10 is to compress the refrigerant to be a high temperature and high pressure, respectively provided on the left and right sides. That is, a constant speed compressor 10 'for constant speed operation is installed on the right side, and an inverter compressor 10 "is installed on the left side.

One side of the compressor 10 is provided with an oil separator 12, respectively. The oil separator 12 filters the oil mixed in the refrigerant discharged from the compressor 10 to be recovered to the compressor 10.

A pipe support 14 is installed at a predetermined height at the left rear end of the base fan 2, and the refrigerant pipe inside the outdoor unit 1 and the refrigerant pipe outside are connected to each other at an upper end of the pipe support 14. Pipe connecting portions 16 are respectively installed and supported. That is, the end of the high pressure pipe 80 and the low pressure pipe 90 to guide the refrigerant flows between the outdoor unit 1 and the indoor unit 50 is coupled to the pipe connection 16.

An accumulator 20 is installed between a central portion of the base fan 2, that is, between the constant speed compressor 10 ′ and the inverter compressor 10 ″. The accumulator 20 filters the liquid refrigerant to form a gaseous refrigerant. Only flow into the compressor 10.

The control box 22 is installed above the compressor 10. Although not shown, the control box 22 includes control components such as voltage transformers and capacitors, and a circuit board. The control box 22 has a rectangular box shape with an open front, and a control cover 22 'is provided at the front to shield the inside.

The outdoor end heat exchanger 30 is provided at the side end and the rear end of the base fan 2. The outdoor heat exchanger (30) is provided in pairs on the left and right to allow heat exchange between the refrigerant flowing inside and the outside air.

That is, the left outdoor heat exchanger 30 'in the' ┏ 'shape (viewed from the top) is installed on the left side, and the right outdoor heat exchanger 30 "in the' ┓ 'shape (viewed from the top) is installed on the right side. And the tube assembly 32 for guiding the introduction of the refrigerant is further formed at the inlet of the outdoor heat exchanger 30, the receiver 33 is formed at the outlet.

The side grille 34 is installed at the left end and the right end of the base fan 2, and the rear grille 36 is installed at the rear end thereof. The rear grill 36 is provided with a pair to correspond to the outdoor heat exchanger (30). That is, the left rear grill 36 'is installed at the rear of the left outdoor heat exchanger 30' and the right rear grill 36 'is installed at the rear of the right outdoor heat exchanger 30'.

A rear frame 38 is provided between the left rear grill 36 ′ and the right rear grill 36 ″ to fix the rear grill 36, and the rear end left and right edges of the base fan 2 are rearward. Frames 38 'are each formed.

The top face of the outdoor unit 1 is formed by the top panel 40. The top panel 40 is formed of a square flat plate corresponding to the base pan 2, and a pair of vent holes 40 'are formed at left and right sides of the center.

The shroud 42 is installed on the upper surface of the vent hole 40 '. The shroud 42 has a cylindrical shape protruding upward, and guides the air discharged to the outside by the blowing fan 46 to be described below. The discharge grill 44 is provided at the top of the shroud 42.

The blowing fan 46 is installed inside the shroud 42. The blowing fan 46 is rotated by the fan motor 48 provided below, and serves to discharge the internal air to the outside. Meanwhile, the fan motor 48 is mounted by the motor mount 48 '.

However, the prior art as described above has the following problems.

A pipe support 14 is installed at the left rear end of the base pan 2 to a predetermined height to support the pipe connecting portion 16. However, the position of the pipe support 14 is located at the rear end and the surrounding space. It is also narrow. Therefore, it is not easy to fasten the ends of the high pressure pipe 80 and the low pressure pipe 90 to the pipe connecting portion 16, the high pressure pipe 80 and the low pressure pipe 90 to the side of the outdoor unit (1). It is difficult to configure to be withdrawn.

Accordingly, an object of the present invention is to solve the problems of the prior art as described above, and to provide a multi-type air conditioner in which cooling and heating are simultaneously performed.

Another object of the present invention, to provide a multi-type air conditioner that can be installed by connecting the refrigerant pipe in various directions of the outdoor unit.

According to an aspect of the present invention, there is provided a multi-type air conditioner, including: an air conditioner including one or more outdoor units and one or more indoor units including cycles corresponding to the outdoor units; The outdoor unit is characterized in that the refrigerant pipe for guiding the flow of the refrigerant has a configuration that can be installed in several directions.

The refrigerant pipe is characterized in that the liquid pipe for guiding the flow of the liquid refrigerant, a high pressure engine for guiding the flow of the high-pressure gas refrigerant, and a low pressure engine for guiding the flow of the low-pressure gas refrigerant.

The front panel and the side panel forming the exterior of the outdoor unit are characterized in that the through-holes through which the refrigerant pipe passes.

The pipe through hole is characterized in that selectively shielded by the through-hole cover.

The refrigerant pipe is characterized in that the connection is installed in at least one direction of the front and both sides of the outdoor unit.

The outdoor unit is provided with a pipe support for supporting the refrigerant pipe, characterized in that the pipe support is installed in the first half of the upper surface of the base fan forming the bottom of the outdoor unit.

According to the multi-type air conditioner according to the present invention having such a configuration, since the refrigerant pipes can be connected in various directions of the outdoor unit, the air conditioner can be easily installed.

Hereinafter, exemplary embodiments of the present invention as described above will be described in detail with reference to the accompanying drawings.

FIG. 5 schematically shows an installation state of the multi-type air conditioner according to the present invention, and FIG. 6 is a block diagram of the multi-type air conditioner according to the present invention.

As shown, the multi-type air conditioner is provided between at least one or more outdoor units 100, one or more indoor units 200, and a distributor 300 installed between the outdoor unit 100 and the indoor unit 200 to control the flow of the refrigerant. It consists of. And between the outdoor unit 100 or the indoor unit 200, or between each outdoor unit 100 and the indoor unit 200, a refrigerant such as a liquid pipe 210, a high pressure engine 214 or a low pressure engine 212 to be described below Pipes are installed in communication.

The outdoor unit 100 is generally installed outdoors of a building, and includes a constant speed compressor 120, an inverter compressor 120 ′, an accumulator 132, an outdoor heat exchanger 180, and an outdoor solenoid valve 102 (LEV: linear). expansion valve, hereinafter referred to as 'outdoor LEV').

In addition, the indoor unit 200 is generally installed inside the building to discharge air directly into the space for air conditioning, the indoor heat exchanger 202, expansion valve 204 and the like are provided respectively.

Between the outdoor unit 100 and the distributor 300, the liquid pipe 210 which is a single pipe through which liquid refrigerant flows, the high pressure engine 214 through which the high pressure gas refrigerant flows, and the low pressure engine 212 through which the low pressure gas refrigerant flows are in communication. It is installed.

The indoor unit 200 includes an indoor liquid pipe 210 'through which liquid refrigerant flows, and an indoor engine 212' through which gas refrigerant flows, and the indoor liquid pipe 210 'and the indoor engine 212' are respectively connected to the liquid pipe. 210 is installed to communicate with the high pressure engine 214 and the low pressure engine (212).

In addition, the plurality of indoor units 200 as described above may be installed in different types and characteristics, and accordingly, the indoor liquid pipe 210 'and the indoor engine 212' may be installed according to the capacity of the indoor unit 200 connected thereto. The diameters are different from each other.

That is, the indoor unit 200 includes a first indoor unit 200a, a second indoor unit 200b, a third indoor unit 200c, and a fourth indoor unit 200d. Each indoor unit 200 includes a first indoor unit. 212'a, 2nd indoor engine 212'b, 3rd indoor engine 212'c, 4th indoor engine 212'd, 1st indoor liquid pipe 210'a, 2nd indoor The liquid pipe 210'b, the third indoor liquid pipe 210'c, and the fourth indoor liquid pipe 212'd are connected to each other to guide the flow of the refrigerant, and each indoor unit 200 and the indoor liquid pipe 210 '. ) And the indoor engine 212 ′ may be configured differently in size and capacity.

Meanwhile, each expansion valve 204 provided in the indoor unit 200 controls the refrigerant flowing into each indoor heat exchanger 202. That is, the first indoor heat exchanger 202a and the first expansion valve 204a are provided in the first indoor chamber 200a, and the second indoor heat exchanger 202b and the second expansion valve are provided in the second indoor chamber 200b. 204b, a third indoor heat exchanger 202c and a third expansion valve 204c are provided in the third indoor chamber 200c, and a fourth indoor heat exchanger 202d in the fourth indoor chamber 200d. ) And a fourth expansion valve 204d. Therefore, each of the expansion valve 204 is controlled differently according to the user's selection, and adjusts the flow rate of the refrigerant flowing into the indoor heat exchanger (202).

7 to 10 show the configuration of a multi-type air conditioner according to the present invention. As shown in these figures, a base fan 110 forming a bottom surface is provided at the bottom to support a plurality of parts, and the front panel 112 forming a front lower exterior at the tip of the base fan 110. ) Is provided.

At the center lower end of the front panel 112, a front pipe through hole 112 'is formed to pass back and forth. That is, the front pipe through hole 112 ′ through which the liquid pipe 210, the high pressure pipe 214, and the low pressure pipe 212 penetrate, respectively, is formed, and such a front pipe through hole 112 ′ is not used. Shielded by a front through-hole cover 112 ".

The front grill 114 is installed above the front panel 112. Therefore, the outside air is sucked through the front grill 114, and passes through the outdoor heat exchanger 180 to be described below. On the other hand, the upper front bracket 116 is further installed on the upper side of the front grill 114, the front end bracket 116 is fastened to the front end of the motor mount 174 to be described below.

Compressors 120 and 120 'are installed on an upper surface of the base fan 110. The compressors 120 and 120 'are configured to compress the refrigerant to be high temperature and high pressure, and are provided at left and right sides, respectively. That is, a relatively constant speed compressor 120 for constant speed operation is installed on the right side, and an inverter compressor 120 ', which is a variable speed heat pump, is installed on the left side.

A refrigerant injector 120a is installed at the inlet side of the compressors 120 and 120 '. The refrigerant injector 120a prevents the compressor from being burned by supplying a refrigerant when the compressors 120 and 120 'are overheated according to operating conditions. The refrigerant used herein is an outdoor heat exchanger 180 to be described below. It is preferred that the refrigerant discharged from is configured to be used.

A constant oil compressor 121 is installed between the constant speed compressor 120 and the inverter compressor 120 'such that the constant speed compressor 120 and the inverter compressor 120' communicate with each other. Therefore, when oil supply shortage occurs in one of the compressors, the compressor 120 is replenished from the other compressor to prevent burnout of the compressors 120 and 120 'due to the insufficient flow rate.

As the compressors 120 and 120 ', a low noise and excellent scroll compressor is used. In particular, the inverter compressor 120' is an inverter scroll compressor whose rotation speed is adjusted according to the load capacity. Therefore, when a small number of indoor units 200 are used and the load capacity is small, the inverter compressor 120 'is operated first, and the constant speed compressor is not available when the load capacity is gradually increased and cannot be handled by the inverter compressor 120'. 120 is activated.

At the outlet side of the constant speed compressor 120 and the inverter compressor 120 ', the compressor discharge temperature sensors 120b and 120'b and the oil separator 122 respectively measure the temperature of the refrigerant discharged from the compressors 120 and 120'. do. The oil separator 122 filters the oil mixed in the refrigerant discharged from the compressors 120 and 120 'to be recovered to the compressors 120 and 120'.

That is, the oil (oil) used to smoothly drive the pistons (not shown) of the compressors 120 and 120 'and cool the frictional heat generated during the driving is discharged to the outlet of the compressors 120 and 120' together with the refrigerant. The oil in the refrigerant is separated from the oil separator 122 and sent back to the compressors 120 and 120 'through the oil return pipe 123.

In addition, a check valve 122 ′ is further installed at an outlet side of the oil separator 122 to prevent a backflow of the refrigerant. That is, when only one of the constant speed compressor 120 or the inverter compressor 120 'is operated, the compressed refrigerant is not flowed back into the compressor 120/120' that is stopped.

The oil separator 122 is configured to communicate with the four-way valve 124 by the pipe. The four-way valve 124 is disposed to change the flow direction of the refrigerant according to the cooling and heating operation, each port is an outlet (or oil separator) of the compressor (120, 120 '), the inlet (or the compressor 120, 120') Accumulator), outdoor heat exchanger 180 and the indoor unit 200 is connected.

Therefore, the refrigerant discharged from the constant speed compressor 120 and the inverter compressor 120 'is collected in one place and then flows into the four-way valve 124. At the inlet of the four-way valve 124, compressors 120 and 120' A high pressure sensor 124 'for checking the pressure of the refrigerant to be discharged is installed.

Meanwhile, the four-way valve has a hot gas pipe 125 that allows a part of the refrigerant flowing into the four-way valve 124 from the oil separator 122 to be directly introduced into the accumulator 132 which will be described below. 124 is installed across.

When the hot gas pipe 125 needs to increase the pressure of the low pressure refrigerant flowing into the accumulator 132 during the operation of the air conditioner, the high pressure refrigerant at the discharge port of the compressors 120 and 120 'is directly directed to the inlet side of the compressor 120 and 120'. In order to be supplied, such a hot gas pipe 125 is provided with a hot gas valve 125 ′, which is a bypass valve, to open and close the pipe.

The pipe support 126 is installed at the center of the first half of the upper surface of the base fan 110. The pipe support 126 is formed in a rectangular cylinder, the liquid pipe coupling portion 210c and the low pressure engine coupling portion 212c to which one end of the liquid pipe 210 and the low pressure engine 212 and the high pressure engine 214 are fastened. The high pressure engine coupling part 214c is supported, and a service valve 128 is also installed there. More specifically, the liquid pipe coupling part 210c is fixed to the left side of the pipe support 126, and the low pressure engine coupling part 212c is fixed to the upper surface of the pipe support 126. The high-pressure engine coupling part 214c is fixed to the right side of 126.

Accordingly, the liquid pipe 210 connected to the inside of the outdoor unit 100 through the side pipe passage 188 'of the side panel 188 or the front pipe passage 112' of the front panel 112 to be described below. One end of the low pressure engine 212 and the high pressure engine 214 is fastened to the liquid pipe coupling part 210c, the low pressure engine coupling part 212c and the high pressure engine coupling part 214c to guide the flow of the refrigerant.

Although not shown in the drawing, the liquid pipe coupling part 210c, the low pressure engine coupling part 212c, and the high pressure engine coupling part 214c are fastened with the liquid pipe 210, the low pressure engine 212, and the high pressure engine 214. It may be further provided with a connector for guiding.

For example, the liquid pipe 210, the low pressure engine 212, and the high pressure engine 214 from both sides of the outdoor unit 100 through the side pipe through holes 188 ′ of the left and right side panels 188 to be described below. ) Is connected, it is preferable that three more '⊥' shaped pipes are provided. In this case, ends of the liquid pipe 210 and the low pressure engine 212 and the high pressure engine 214 are coupled to the left and right sides of the connection pipe, and the liquid pipe coupling part 210c and the low pressure engine coupling part 212c and the high pressure are connected to the rear side. The engine coupling part 214c is coupled.

Of course, when the liquid pipe 210 and the low-pressure engine 212 and the high-pressure engine 214 is connected only to one side of the outdoor unit 100, not both sides of the '' 'shape,' b ' It would be sufficient if a connector of the shape was provided.

On the other hand, the liquid pipe 210, the low pressure pipe 212 and the high pressure pipe 214, the side pipe passage hole 188 'and the front pipe hole 112 of the side panel 188, which will be described below. When connected at the same time through ') it will be preferable that the' + 'shaped connector is provided.

The outdoor supercooler 130 is formed at the right rear end of the upper surface of the base fan 110. The outdoor supercooler 130 to further cool the refrigerant heat exchanged in the outdoor heat exchanger 180 to be described below, formed at any position of the liquid pipe 210 connected to the outlet side of the outdoor heat exchanger 180. do.

The outdoor supercooler 130 is formed of a double pipe. That is, an inner tube (not shown) in communication with the liquid pipe 210 is formed in the center, and an outer tube (not shown) communicates with an outer tube (130 ') to be described below on the outside of the inner tube (not shown) ( Not shown) is formed.

On the other hand, in the liquid pipe 210 formed at the outlet of the outdoor supercooler 130, the reverse transfer pipe 130 'is formed in communication. The reverse conveying pipe 130 'serves to guide the refrigerant flowing out of the outdoor heat exchanger 180 and flowing through the liquid pipe 210 to flow into the outer pipe (not shown) and flow back.

The reverse transfer pipe 130 ′ is provided with a supercooled expansion valve 130 ′ a that converts the liquid refrigerant into a low temperature gas refrigerant by expansion. The subcooled expansion valve 130 ′ may control the amount of refrigerant flowing back through the back transfer pipe 130 ′. Therefore, the refrigerant passing through the outdoor supercooler 130 is a temperature desired by the user. That is, as the amount of refrigerant flowing back through the back transfer pipe 130 ′ increases, the temperature of the refrigerant passing through the outdoor supercooler 130 will be lowered.

When a part of the refrigerant discharged from the outdoor supercooler 130 is introduced into the reverse conveying pipe 130 'by the above configuration, the low temperature gas refrigerant is expanded while passing through the subcooling expansion valve 130'a. The low temperature gas refrigerant flows back through the outer tube (not shown) of the outdoor supercooler 130 to further cool the liquid refrigerant flowing through the inner tube (not shown) through heat exchange.

As such, the liquid refrigerant discharged from the outdoor heat exchanger 180 is further cooled by the heat conduction while passing through the outdoor supercooler 130, and is supplied to the indoor unit 200, and the outer tube of the outdoor supercooler 130 is provided. The reflux refrigerant discharged from (not shown) is supplied back to the compressors 120 and 120 'through the accumulator 132 to be described below, and circulated.

Meanwhile, a liquid pipe temperature sensor 130a for measuring a temperature of the refrigerant discharged from the outdoor unit 100 is installed at an outlet of the outdoor supercooler 130, and a supercooling inlet sensor 130 is located at an outlet of the subcooling expansion valve 130 ′ a. 'b) is provided to measure the temperature of the reverse flow refrigerant flowing into the outdoor supercooler 130, and the subcooling outlet sensor 130'c is provided at the outlet of the outdoor supercooler 130.

A dryer 131 is provided at one side of the outdoor supercooler 130, that is, one side of the liquid pipe 210 through which the refrigerant discharged from the outdoor heat exchanger 180 is guided to the indoor unit 200. The dryer 131 serves to remove moisture contained in the refrigerant flowing through the liquid pipe 210.

An accumulator 132 is installed between a central portion of the base fan 110, that is, between the constant speed compressor 120 and the inverter compressor 120 ′. The accumulator 132 filters the liquid refrigerant so that only the gaseous refrigerant flows into the compressors 120 and 120 '.

That is, when the refrigerant remaining in the liquid phase without being evaporated into gas among the refrigerant flowing from the indoor unit 200 directly flows into the compressors 120 and 120 ', the compressor is formed into a gaseous refrigerant having a high temperature and high pressure. ), The load is increased, resulting in damage to the compressor (120 120 120).

Therefore, among the refrigerants introduced into the accumulator 132, the refrigerant which is not evaporated and remains in the liquid phase is stored in the lower part of the accumulator 132 because it is relatively heavier than the refrigerant in the gas phase, and only the gaseous refrigerant in the upper portion of the compressor 120, 120 Flows into '). On the other hand, the inlet side of the accumulator 132 is provided with a suction pipe temperature sensor 132 ′ for measuring the temperature of the refrigerant sucked and a low pressure sensor 132 ″ for checking the pressure of the refrigerant.

Front frames 134 and 134 'are formed at both ends of the base pan 110, respectively. The front frames 134 and 134 'are formed vertically long at the tip of the base fan 110, and are divided into a front left frame 134 installed at the left end and a front right frame 134' installed at the right end. .

The front frames 134 and 134 'support the front upper bracket 116, the front grill 114, and the control boxes 140 and 140' to be described below. On the other hand, the center frame 136 is provided at the center of the front left frame 134 and the front right frame 134 '.

Control boxes 140 and 140 ′ are installed below the central frame 136. The control boxes 140 and 140 'are formed in pairs on the left and right sides. That is, the left control box 140 provided on the left side and the right control box 140 'provided on the right side, the left control box 140 is fixed to the front left frame 134 by a hinge 140a. The right control box 140 'is fixed to the front right frame 134' by a hinge 140'a.

The control boxes 140 and 140 'each have a rectangular box shape whose front is opened, and the front is shielded by the front panel 112. The left control box 140 is provided with a control component such as a voltage transformer 142 and a capacitor 144 and a heating element plate (not shown).

A heat radiating portion 146 ′ formed of heat radiating fins is formed on a rear surface of the heat generating element plate (not shown). On the other hand, the heat radiation fan 148 is installed on the rear upper end of the left control box 140, the heat radiation fan 148 is composed of a cross flow fan. Therefore, when the heat radiating fan 148 sucks air and discharges it upward, heat exchange in the heat radiating portion 146 'is promoted to cool the heat generating element plate (not shown).

Since the side ends of the control boxes 140 and 140 'are mounted to the front frames 134 and 134' by hinges 140a and 140'a, the hinges 140a and 140'a can be pivoted forward on the axis. Done. Therefore, when after-sales service of the internal parts is required, the control boxes 140 and 140 'can be rotated forward.

The barrier 150 is installed in the central frame 136. The barrier 150 divides the inside of the outdoor unit 100 into an upper space and a lower space. That is, the compressor 120 and 120 'and the control box 140, 140' and the lower side is installed, and the outdoor heat exchanger 180 to be described below is partitioned.

The barrier 150 is provided on the left and right sides similarly to the control boxes 140 and 140 '. The barrier 150 has a horizontal portion 150 'formed rearward from the center frame 136 and an inclined portion 150 "formed to be inclined downward from the rear end of the horizontal portion 150' at a predetermined angle. Is made of.

Meanwhile, an air guide hole 152 is formed in the horizontal portion 150 ′ of the left barrier 150 of the barrier 150, and an air guide cover 154 is installed above the air guide hole 152. The air guide cover 154 is configured such that the front and the top is shielded and the rear is opened, so that the air forcedly blown from the heat radiating fan 148 provided at the bottom is guided to the rear.

The upper surface of the outdoor unit 100 is formed by the upper panel 160. The top panel 160 has a square flat plate shape and is provided in pairs on the left and right sides. In addition, the upper panel 160 has a ventilation hole 162 formed, and the edge of the ventilation hole 162 extends downward to form a cylindrical shroud 164. The shroud 164 is formed integrally with the upper panel 160, preferably made of a plastic material.

The shroud 164 is formed in a cylindrical shape to guide the air forcedly blown by the blowing fan 170 to be described below. Meanwhile, a circular discharge grill 166 corresponding to the ventilation hole 162 is mounted on the shroud 164, that is, the ventilation hole 162.

The blowing fan 170 is installed inside the shroud 164. The blowing fan 170 is rotated by the fan motor 172 provided at the bottom, and discharges the air therein upward. That is, when the fan motor 172 generates a rotational force by the power applied from the outside, the blowing fan 170 fixed to one end of the rotation shaft of the fan motor 172 rotates to discharge the air upward.

The fan motor 172 is fixed by the motor mount 174. The motor mount 174 is composed of a fixed plate 174 'of a square plate and a support 174 "for supporting the fixed plate 174'. The support 174" is formed in a pair on the left and right, The fixing plate 174 'is mounted at the center of the pair of supports 174 ". The front and rear ends of the support 174 " are bent upwards to allow the front upper bracket 116 and the rear surface to be described below. It is fixed to the upper bracket 194 respectively.

An outdoor heat exchanger 180 is provided below the upper panel 160. The outdoor heat exchanger 180 is installed in pairs before and after the heat exchange between the refrigerant flowing inside and the outside air. That is, the front heat exchanger 182 is installed below the front end of the upper panel 160, and the rear heat exchanger 184 is installed below the rear end of the upper panel 160.

The lower half of the front heat exchanger 182 is bent backwards. That is, it consists of a vertical portion 182 'extending downwardly from the front end of the front panel 112 at a predetermined length, and an inclined portion 182 " formed to be inclined backward at a predetermined angle from the bottom of the vertical portion 182'. do.

Accordingly, the lower end of the inclined portion 182 ″ and the lower end of the rear heat exchanger 184 are adjacent to each other, and the lower end of the outdoor heat exchanger 180 has a predetermined distance from the base fan 110. Meanwhile, a tube assembly 180 'is further formed at a side surface of the outdoor heat exchanger 180 to distribute the refrigerant supplied from the compressors 120 and 120' to each part.

On the other hand, the heat exchanger temperature sensor 180a for measuring the temperature of the heat exchanger is installed inside the outdoor heat exchanger 180, and the outdoor temperature sensor 180b for measuring the temperature of the outside is further provided.

A drain pan 186 is provided below the bottom of the outdoor heat exchanger 180. The drain pan 186 is formed long to the left and right and collects the condensed water generated in the outdoor heat exchanger 180 and discharges it to the side.

Side panels 188 are installed at left and right ends of the upper surface of the base fan 110. The side panel 188 is to form a side appearance of the outdoor unit 100, the lower side is formed with a side pipe through hole 188 'before and after. And the side through hole 188 'is shielded by a side through hole cover 188 "when not in use.

The rear grill 190 is installed at the rear end of the base fan 110. The rear grill 190 is formed to correspond to the size of the rear heat exchanger 184, the rear panel 192 is provided below the rear grill 190.

The upper rear bracket 194 is formed to the left and right at an upper end of the rear grill 190. The upper rear bracket 194 is installed on the upper front surface of the rear grill 190 to support the rear end of the support 174 ″ of the motor mount 174.

Meanwhile, a rear frame 196 is installed at the rear end corner of the base fan 110. The rear frame 196 is elongated upward and downward to support the rear grill 190, the rear panel 192, and the upper panel 160.

On the other hand, as shown in Figure 10, one side of the outdoor LEV 102 is further provided with a cooling dedicated pipe 198 bypassing the outdoor LEV (102). In addition, a cooling valve 198 ′, which is a bypass valve, is further installed in the cooling dedicated piping 198 to control the refrigerant passing through the cooling dedicated piping 198. That is, when the air conditioner is operated in the cooling only mode, the cooling valve 198 'is opened so that the refrigerant flows through the cooling only pipe 198.

11 and 12 show a distributor of a multi-type air conditioner according to the present invention. As shown in FIG. 2, the distributor 300 is called a H Recovery Unit, and is provided in a rectangular distributor case 310 and an upper side of the distributor case 310 to shield the inside thereof. The exterior is formed by the cover 320.

Both side surfaces of the distributor case 310 are connected to the liquid pipe 210 and the high pressure engine 214 and the low pressure engine 212 communicated with the outdoor unit 100, respectively, the front of the distributor case 310, the indoor unit An indoor engine 212 ′ and a chamber liquid pipe 210 ′ communicating with 200 are connected to each other.

The low pressure engine 212 is provided with a plurality of main valves 330 and auxiliary valves 332 consisting of bypass valves. That is, as shown, a first main valve 330a is installed in the first indoor engine 212'a connected to the first indoor chamber 200, and a second indoor engine connected to the second indoor chamber 200 ( The second main valve 330b is installed at 212'b). A third main valve 330c is installed in the third indoor engine 212'c connected to the third indoor chamber 200, and the fourth indoor engine 212'd connected to the fourth indoor chamber 200. The fourth main valve 330d is installed to selectively pass the refrigerant.

Meanwhile, the indoor engine 212 ′ is branched inside the distributor 300 to form a branch pipe 340. That is, the first branch pipe 340a is branched from the first indoor engine 212'a, and the first branch pipe 340a is provided with a first auxiliary valve 332a so as to first branch pipe 340a. Selectively control the refrigerant passing through.

In addition, the second branch pipe 212'b, the third indoor pipe 212'c, and the fourth indoor pipe 212'd also have a second branch pipe 340b, a third branch pipe 340c, and a third one. Four branch pipes 340d are branched, and each of the branch pipes 340 also has a second auxiliary valve 332b, a third auxiliary valve 332c, and a fourth having the same function as the first auxiliary valve 332a. Auxiliary valves 332d are provided respectively.

The branch pipe 340 is in communication with the high pressure engine 214. That is, one end of each branch pipe 340 is connected to the indoor engine 212 ', respectively, and the other end is connected to the high pressure engine 214, respectively.

The distributor 300 is further provided with a simultaneous supercooler 350. The simultaneous supercooler 350 is operated when the air conditioner is simultaneously heated and cooled to serve to improve the cooling efficiency. The simultaneous supercooler 350 is connected to the liquid pipe 210, and is configured as a double pipe like the outdoor supercooler 130 to further cool the refrigerant flowing through the liquid pipe 210.

And although not shown, the liquid pipe 210 provided in the interior of the simultaneous supercooler 350 is preferably made of a spiral tube. The spiral tube improves the cooling rate and the cooling efficiency. A bypass pipe 352 branched from the liquid pipe 210 is further formed at the inlet of the simultaneous supercooler 350, and the bypass pipe 352 is provided with a supercooling control valve 354. The supercooling control valve 354 is opened during the simultaneous operation of air conditioning and heating to further cool the refrigerant flowing through the liquid pipe 210. That is, the two-phase (gas + liquid) refrigerant flowing through the liquid pipe 210 is cooled in the simultaneous supercooler 350 to be converted into a complete liquid phase.

In the distributor 300, a refrigerant connection pipe 360 is further formed to remove the condensate. The refrigerant connection pipe 360 is provided with a connection pipe opening and closing valve 362 for controlling the flow of the refrigerant, and a capillary tube 364 for expanding the refrigerant flowing through the refrigerant connection pipe 360. The connection pipe open / close valve 362 opens the refrigerant connection pipe 360 when an air conditioner is operated in a cold discharge chamber operation, and the refrigerant flowing through the refrigerant connection pipe 360 flows in the capillary tube 364. Will expand.

Hereinafter, the operation of the multi-type air conditioner according to the present invention having the configuration as described above will be described with reference to FIGS. 13 to 16.

First, with reference to Figure 13 looks at the operating state during the operation of the cooling room. In the cooling chamber operation, as shown in FIG. 13, the first indoor chamber 200a, the second indoor chamber 200b, the third indoor chamber 200c, and the fourth indoor chamber 200d are all used for cooling.

First, referring to the refrigerant flow in the outdoor unit 100, the gas refrigerant flowing from the indoor unit 200 is compressed and discharged from the compressors 120 and 120 ', and the refrigerant discharged from the compressors 120 and 120' As the oil passes through the oil separator 122, oil is separated and recovered to the compressors 120 and 120 '. That is, as the refrigerant is compressed in the compressors 120 and 120 ', oil is mixed in the refrigerant. Since the oil is in the liquid state and the refrigerant is in the gas state, the oil is separated from the oil separator 122 which is the gas-liquid separator.

The refrigerant passing through the oil separator 122 flows into the outdoor heat exchanger 180 through the four-way valve 124. Since the outdoor heat exchanger 180 functions as a condenser (in the cooling mode), the refrigerant is cooled through heat exchange with external air to become a liquid refrigerant.

The refrigerant discharged from the outdoor heat exchanger 180 passes through the cooling only pipe 198. That is, since the cooling valve 198 ′ is opened during the operation of the cooling chamber, the refrigerant passing through the outdoor heat exchanger 180 does not pass through the outdoor LEV 102 and passes through the cooling dedicated pipe 198. Will pass.

In the cooling and discharging chamber operation, the subcooling expansion valve 130 ′ a is opened to operate the outdoor supercooler 130. Therefore, the refrigerant passing through the cooling exclusive pipe 198 is further cooled in the outdoor supercooler 130 to become a liquid refrigerant. The refrigerant passing through the outdoor supercooler 130 passes through a dryer (not shown) for removing moisture contained in the refrigerant, and then flows into the distributor 300 through the liquid pipe 210.

The distributor 300 distributes and supplies a refrigerant to the plurality of indoor units 200. That is, the first indoor chamber 200a through the first indoor liquid pipe 210'a, the second indoor liquid pipe 210'b, the third indoor liquid pipe 210'c and the fourth indoor liquid pipe 212'd, Refrigerants are supplied to the second indoor chamber 200b, the third indoor chamber 200c, and the fourth indoor chamber 200d, respectively.

The refrigerant introduced into each indoor unit 200 is expanded by the expansion valve 204 to be decompressed, and heat exchange is performed in each indoor heat exchanger 202. At this time, since the first indoor heat exchanger 202a, the second indoor heat exchanger 202b, the third indoor heat exchanger 202c, and the fourth indoor heat exchanger 202d all serve as evaporators, the refrigerant is exchanged through heat exchange. Low pressure gas.

The refrigerant discharged from the indoor heat exchanger 202 is introduced back into the distributor 300 via the respective indoor engines 212 ′. At this time, since each of the auxiliary valves 332 in the distributor 300 are all in an off state, the refrigerant passes through each of the main valves 330.

Air passing through the distributor 300 enters the accumulator 132 through the low pressure engine 212. In the accumulator 132, the liquid refrigerant that has not been evaporated is filtered out, and only the refrigerant in the gaseous state is selected and supplied to the compressors 120 and 120 '. Through this process, one cycle is completed.

On the other hand, during the operation of the cold discharge chamber as described above, a part of the high pressure refrigerant discharged from the compressors 120 and 120 'is also partially moved to the high pressure engine 214. However, the flow of the refrigerant through the high pressure engine 214 is blocked in the distributor 300. That is, since the first main valve 330a, the second main valve 330b, the third main valve 330c, and the fourth main valve 330d in the distributor 300 are turned off, the inside of the high pressure engine 214 is turned off. The refrigerant condenses and accumulates therein.

In addition, since the connection pipe opening / closing valve 362 is opened during the operation of the cooling chamber, the flow of the refrigerant occurs through the refrigerant connection pipe 360. That is, the refrigerant inside the high pressure engine 214 moves to the low pressure engine 212 through the refrigerant connection pipe 360, and the refrigerant condensed by the capillary tube 364 is expanded to the low pressure engine 212. It is recovered. As such, when the refrigerant flows through the refrigerant connection pipe 360, the air conditioner maintains a stable cycle as a whole.

Next, with reference to Figure 14 looks at the operating state during the heating room operation. As shown in FIG. 14, the first indoor chamber 200a, the second indoor chamber 200b, the third indoor chamber 200c, and the fourth indoor chamber 200d are used for heating. In addition, since the functions of the respective components have been described in the state description during the cooling and discharging chamber operation, detailed functions of the respective components will be omitted.

First, referring to the refrigerant flow in the outdoor unit 100, the refrigerant discharged from the compressors 120 and 120 ′ passes through the oil separator 122 and flows into the distributor 300 through the high pressure engine 214.

In the distributor 300, each main valve 330 is turned off, and each auxiliary valve 332 is turned on to open. Therefore, the refrigerant introduced into the distributor 300 through the high pressure engine 214 flows into the indoor engine 212 ′ through the branch pipe 340 and is supplied to the indoor unit 200.

The refrigerant passing through the indoor heat exchanger 202 inside the indoor unit 200 is condensed through heat exchange with indoor air. That is, in the case of heating, the indoor heat exchanger 202 acts as a condenser to warm the internal air by heat generation. Since the expansion valves 204 are all open, the refrigerant changed into the liquid phase while passing through the indoor heat exchanger 202 flows into the distributor 300 through the indoor liquid pipe 210 '.

The liquid refrigerant in the distributor 300 is introduced into the outdoor unit 100 through the liquid pipe 210. The refrigerant introduced into the outdoor unit 100 passes through the outdoor LEV 102 and is supplied to the outdoor heat exchanger 180 to generate heat exchange. At this time, since the outdoor heat exchanger 180 acts as an evaporator, the liquid refrigerant is changed to the gas phase by heat exchange with external air.

The low-pressure refrigerant in the gas phase discharged from the outdoor heat exchanger 180 passes through the four-way valve 104 and is supplied to the compressors 120 and 120 'through the accumulator 132. Through this process, one heating cycle is formed.

15 shows the flow of the refrigerant during the operation of the cooling main body.

During operation of the cooling main body, the first indoor unit 200a, the second indoor unit 200b, and the third indoor unit 200c of the four indoor units 200 operate in the cooling mode, and only the fourth indoor unit 200d is heated. It works.

Therefore, the refrigerant discharged from the compressors 120 and 120 'in the outdoor unit 100 passes through the oil separator 122, and oil is separated and recovered to the compressors 120 and 120'.

The refrigerant passing through the oil separator 122 flows into the outdoor heat exchanger 180 through the four-way valve 124. Since the outdoor heat exchanger 180 functions as a condenser (in the cooling mode), the refrigerant is cooled through heat exchange with external air to become a liquid refrigerant.

The refrigerant discharged from the outdoor heat exchanger 180 passes through the outdoor LEV 102. At this time, the amount of refrigerant is controlled by the outdoor LEV 102, and the cooling exclusive pipe 198 is blocked by the cooling valve 198 ′. In addition, since the supercooled expansion valve 130 ′ is turned off, the refrigerant flows into the distributor 300 through the liquid pipe 210.

The refrigerant introduced into the distributor 300 is supercooled by the simultaneous supercooler 350. That is, since the subcooling control valve 354 is opened, a part of the refrigerant introduced through the liquid pipe 210 is introduced into the bypass pipe 352 and expanded. Therefore, the refrigerant flowing in the simultaneous supercooler 350 is further cooled.

The coolant further cooled while passing through the simultaneous supercooler 350 is passed through the first, second and third indoor liquid pipes 210'a, 210'b and 210'c. , 200c). The refrigerant passes through the first, second and third indoor heat exchangers 202a, 202b and 202c of the first, second and third indoor chambers 200a, 200b and 200c to realize cooling through heat exchange with the indoor air. That is, since the first, second and third indoor heat exchangers 202a, 202b and 202c act as evaporators, the refrigerant becomes a low pressure gas through heat exchange.

The refrigerant passing through the first, second, and third indoor chambers 200a, 200b, and 200c is introduced into the distributor 300 again. At this time, the first, second and third main valves 330a, 330b and 330c of the distributor 300 are opened and the fourth main valve 330d is off. The first, second, and third auxiliary valves 332a, 332b, and 332c are turned off, and the fourth auxiliary valve 332d is turned on to open.

Therefore, the low pressure refrigerant introduced into the distributor 300 flows into the outdoor unit 100 through the low pressure engine 212 and enters the accumulator 132. In the accumulator 132, the liquid refrigerant that has not been evaporated is filtered out, and only the refrigerant in the gaseous state is selected and supplied to the compressors 120 and 120 '. Through this process, one cycle is completed.

Meanwhile, in the cooling main body operation, a part of the high pressure refrigerant discharged from the compressors 120 and 120 'is also partially moved to the high pressure engine 214. This refrigerant is introduced into the distributor 300.

At this time, the first, second and third auxiliary valves 332a, 332b and 332c are all turned off in the distributor 300, and only the fourth auxiliary valve 332d is opened. It is introduced into the fourth indoor chamber 200d through the four branch pipes 340d. At this time, since the fourth indoor heat exchanger 202d of the fourth indoor chamber 200d acts as a condenser, the refrigerant is changed into a liquid phase and flows into the distributor 300 through the fourth indoor liquid pipe 212'd. The liquid refrigerant flowing into the distributor 300 is mixed with the refrigerant flowing through the liquid pipe 210 and flows to the first, second, and third indoor chambers 200a, 200b, and 200c as described above, and used for cooling. do.

The reason why the liquid refrigerant of the distributor 300 does not flow back to the fourth indoor liquid pipe 212'd is due to the pressure difference of the refrigerant. That is, the pressure of the refrigerant in the fourth indoor liquid pipe 212'd is larger than the pressure of the refrigerant in the first, second and third indoor liquid pipes 210'a, 210'b, and 210'c.

16 shows an operating state in the heating main body operation. During the heating main operation, the first indoor unit 200a, the second indoor unit 200b, and the third indoor unit 200c of the four indoor units 200 operate in a heating mode, and only the fourth indoor unit 200d is cooled. It works.

Therefore, when first described as a heating reference, the refrigerant discharged from the compressor (120, 120 ') is introduced into the distributor 300 through the high pressure engine 214 through the oil separator 122.

At this time, in the distributor 300, the first, second and third main valves 330a, 330b and 330c are turned off and only the fourth main valve 330d is turned on, and the first, second and third auxiliary valves 332a are used. , 332b, 332c are on and the fourth auxiliary valve 332d is off. Therefore, the refrigerant of the high-pressure engine 214 passes through the first, second, and third branch pipes 340a, 340b, and 340c to the first, second, and third indoor engines 212'a, 212'b, and 212'c. Inflow is supplied to the first, second, third indoor (200a, 200b, 200c).

The refrigerant passing through the first, second and third indoor heat exchangers 202a, 202b and 202c in the first, second and third indoor chambers 200a, 200b and 200c is condensed through heat exchange with indoor air. That is, in the case of heating, the first, second and third indoor heat exchangers 202a, 202b, and 202c act as condensers to warm internal air by heat generation. Since the first, second, and third expansion valves 204a, 204b, and 204c are all open, the refrigerant changed into a liquid phase while passing through the first, second, and third indoor heat exchangers 202a, 202b, and 202c is the first. 2, 3 are introduced into the distributor 300 through the indoor liquid pipes 210'a, 210'b, and 210'c.

Some of the refrigerant discharged from the compressors 120 and 120 ′ also flow into the outdoor heat exchanger 180 via the four-way valve 124. Since the outdoor heat exchanger 180 functions as a condenser (in the cooling mode), the refrigerant is cooled through heat exchange with external air to become a liquid refrigerant.

The refrigerant discharged from the outdoor heat exchanger 180 passes through the outdoor LEV 102. At this time, the amount of refrigerant is controlled by the outdoor LEV 102, and the cooling exclusive pipe 198 is blocked by the cooling valve 198 ′. In addition, since the supercooled expansion valve 130 ′ is turned off, the refrigerant flows into the distributor 300 through the liquid pipe 210.

As such, the refrigerant introduced into the distributor 300 through the liquid pipe 210 passes through the first, second and third indoor chambers 200a, 200b, and 200c, and the first, second and third indoor liquid pipes 210'a, 210 '. b, 210'c) is combined with the liquid refrigerant flowing into the distributor 300.

As described above, the refrigerant introduced into the distributor 300 is supercooled by the simultaneous supercooler 350. That is, since the supercooling control valve 354 is opened, a portion of the refrigerant introduced through the liquid pipe 210 flows into the bypass pipe 352 and expands and flows while flowing inside the simultaneous supercooler 350 by heat exchange. Allow the refrigerant to cool further.

The refrigerant further cooled while passing through the simultaneous supercooler 350 flows into the fourth indoor chamber 200d through the fourth indoor liquid pipe 212'd. At this time, since the fourth expansion valve 204d is open, the refrigerant passes through the fourth indoor heat exchanger 202d to realize cooling through heat exchange with indoor air. That is, since the fourth indoor heat exchanger 202d acts as an evaporator, the refrigerant becomes low pressure gas through heat exchange.

The refrigerant passing through the fourth indoor chamber 200d is introduced into the distributor 300 again. At this time, since the fourth main valve 330d of the distributor 300 is opened and the fourth auxiliary valve 332d is off, the low pressure refrigerant is supplied to the outdoor unit 100 through the low pressure engine 212.

The refrigerant flowing into the outdoor unit 100 through the low pressure engine 212 enters the accumulator 132. In the accumulator 132, the liquid refrigerant that has not been evaporated is filtered out, and only the refrigerant in the gaseous state is selected and supplied to the compressors 120 and 120 '. Through this process, one cycle is completed.

On the other hand, in the outdoor unit 100 having the above configuration, a plurality of indoor units 200 may be installed to communicate with each other. Therefore, the liquid pipe 210, the high pressure engine 214, and the low pressure engine 212, which allow the refrigerant to flow through the outdoor unit 100 and the indoor unit 200, may also be configured to be connected to various aspects of the outdoor unit 100. Do. Therefore, if necessary, the liquid pipe coupling part 210c, the low pressure engine coupling part 212c, and the high pressure engine coupling part 214c provided in the outdoor unit 100 are further provided with connection tubes having various shapes. It is also possible to be easily coupled to the 210 and the high pressure engine 214 and the low pressure engine (212).

For example, in the above-described embodiment, the liquid pipe 210, the high pressure engine 214, and the low pressure engine 212 pass through the side panel 188 of the outdoor unit 100, but the liquid pipe as shown in FIG. The 210 and the high pressure engine 214 and the low pressure engine 212 may also be configured to penetrate the front panel 112 as well as the side panel 188 of the outdoor unit 100. That is, the liquid pipe 210, the high pressure engine 214, and the low pressure engine 212 may be configured to be simultaneously connected to the front and both sides of the outdoor unit 100.

The scope of the present invention is not limited to the above-exemplified embodiments, and many other modifications based on the present invention will be possible to those skilled in the art within the above technical scope.

As described above, in the multi-type air conditioner according to the present invention, a plurality of indoor units are provided in at least one outdoor unit, and a distributor is provided between the indoor unit and the outdoor unit to guide the flow of the refrigerant. Thus, according to the present invention, it is possible to allow a part of the indoor unit to be operated by cooling and the other part by heating. That is, there are advantages that a plurality of indoor units can be individually operated for different uses at the same time.

In the present invention, the liquid pipe coupling portion and the high pressure engine coupling portion and the low pressure engine coupling portion coupled to the ends of the liquid pipe and the high pressure engine and the low pressure engine are supported by a pipe support installed in the first half of the outdoor unit base fan, and the side panel and the front panel of the outdoor unit. There is formed a pipe through-hole through which the liquid pipe, the high pressure engine and the low pressure engine respectively pass. Therefore, the liquid pipe, the high pressure engine and the low pressure engine can be connected through both sides as well as the front of the outdoor unit, there is an advantage that the installation of the air conditioner is convenient.

Claims (11)

At least one outdoor unit having an outdoor heat exchanger that undergoes heat exchange, and an outdoor supercooler configured to further cool the refrigerant heat-exchanged in the outdoor heat exchanger; At least one indoor unit having an indoor heat exchanger in which heat exchange takes place; A refrigerant pipe installed in communication with each other of the outdoor unit or the indoor unit or between the outdoor unit and the indoor unit to guide the flow of the refrigerant; It is provided with the outdoor unit, and has a configuration including a pipe support for supporting the refrigerant pipe; The outdoor unit is a multi-type air conditioner, characterized in that the refrigerant pipe has a configuration that can be installed in various directions. The method of claim 1, wherein the refrigerant pipe, A liquid pipe for guiding the flow of the liquid refrigerant, A high pressure engine for guiding the flow of the high pressure gas refrigerant, Multi-type air conditioner, characterized in that the low pressure engine for guiding the flow of low-pressure gas refrigerant. [3] The multi-type air conditioner of claim 2, wherein the front and side panels forming the exterior of the outdoor unit are formed with pipe passages through which the refrigerant pipe passes. The multi-type air conditioner of claim 3, wherein the pipe through hole is selectively shielded by a through hole cover. The multi-type air conditioner according to claim 4, wherein the refrigerant pipe is connected to at least one of the front and both sides of the outdoor unit. The multi-type air conditioner according to claim 5, wherein the pipe support is installed in the first half of the upper surface of the base fan forming the bottom of the outdoor unit. The method according to any one of claims 1 to 6, Between the indoor unit and the outdoor unit, a multi-type air conditioner, characterized in that connected to the distributor for controlling the flow of the refrigerant in accordance with the operating conditions. The method of claim 7, wherein the distributor, The air conditioner is a multi-type air conditioner further comprises a simultaneous supercooler is operated when heating and cooling is performed at the same time to improve the cooling efficiency. The pipe support according to any one of claims 2 to 6, wherein Multi-type air conditioner, characterized in that for supporting the liquid pipe coupling portion and the low pressure engine coupling portion and the high pressure engine coupling portion to which one end of the liquid pipe and the low pressure engine and the high pressure engine. 10. The method of claim 9, wherein the liquid pipe coupling portion is fixed to the left side of the pipe support, the low pressure engine coupling portion is fixed to the upper surface of the pipe support, characterized in that the high pressure engine coupling portion is fixed to the right side of the pipe support Multi air conditioner. The multi-type air conditioner of claim 10, wherein the liquid pipe coupling unit, the low pressure engine coupling unit, and the high pressure engine coupling unit are further provided with a connecting pipe for guiding the coupling between the liquid pipe, the low pressure engine, and the high pressure engine.

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