KR101092712B1 - Multi type air conditioner - Google Patents

Abstract

The present invention relates to a multi-type air conditioner having a distributor for controlling the flow of refrigerant between an outdoor unit and a plurality of indoor units, and having an electromagnetic expansion valve and a silencer connected to each indoor unit.

The present invention, the outdoor unit 100 is provided with an outdoor heat exchanger 110 for heat exchange with the outdoor air; A plurality of indoor units 200 equipped with an indoor heat exchanger 210 for exchanging heat with indoor air; Comprising a distributor 300 for controlling the flow of refrigerant between the outdoor unit 100 and a plurality of indoor unit 200, a plurality of electromagnetic expansion valve 650 for controlling the flow rate of the refrigerant in the distributor 300 ) And a plurality of silencers 660 for removing noise. In addition, the distributor 300 is formed separately from the outdoor unit 100 and the indoor unit 200. According to the multi-type air conditioner according to the present invention having such a configuration, there is an advantage that the structure of the indoor unit and the outdoor unit is improved and the noise is reduced, thereby greatly improving the installability.

Air Conditioner, Multi Type, Distributor, Electronic Expansion Valve

Description

Multi type air conditioner {Multi type air conditioner}

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

Figure 2 is a perspective view showing the shape of a distributor of a multi-type air conditioner according to the prior art.

Figure 3 is a schematic diagram showing the internal structure of the distributor of the multi-type air conditioner according to the prior art.

Figure 4 is a block diagram showing the configuration of a multi-type air conditioner according to the present invention.

5 is a perspective view showing an upper shape of a distributor which is a main component of a multi-type air conditioner according to a preferred embodiment of the present invention.

6 is a perspective view showing a lower shape of a distributor which is a main component of a multi-type air conditioner according to a preferred embodiment of the present invention.

7 is a perspective view showing an internal structure of a distributor which is a main component of a multi-type air conditioner according to a preferred embodiment of the present invention.

8 is a perspective view showing a high-pressure side pipe of a distributor which is a main component of a multi-type air conditioner according to a preferred embodiment of the present invention.

9 is a perspective view showing a low pressure side pipe of a distributor which is a main component of a multi-type air conditioner according to a preferred embodiment of the present invention;

10 is a perspective view showing an exposed portion and a filling portion of a distributor which is a main component of a multi-type air conditioner according to a preferred embodiment of the present invention.

11 is a detailed configuration diagram showing an entire cycle of a multi-type air conditioner according to a preferred embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

100. Outdoor unit 110. Outdoor heat exchanger

120. Constant Speed Compressor 122. Inverter Compressor

130. Outdoor Solenoid Valve 140. Four-way Valve

150. Accumulator 160. Oil Separator

162. Oil return pipe 170. Receiver

180. Dryer 200. Indoor unit

210. Indoor heat exchanger 220. Connector

300. Dispenser 310. Casing

320. Top panel 322. Mounting bracket

324. Screw holes 326. Hanging groove

330. Control cover 332. Control PCB

334. PCB case 340. Foam inlet

350.Cablehole 360.Vary

370. Filling 380. Exposed

400. High pressure pipe 420. Low pressure pipe

500. High Pressure Connector 520. Low Pressure Connector                 

600. High pressure side pipe 620. Outdoor side high pressure socket

640. Indoor high pressure socket 650. Electronic expansion valve

652. Connecting line 660. Silencer

670. Branch Pipes 680. Strainers

700. Low pressure side piping 720. Outdoor side low pressure socket

740. Indoor low pressure socket 800. Insulation

R. Indoor space P. Foam

The present invention relates to an air conditioner, and more particularly, a multi-type air having a distributor for controlling a refrigerant flow between an outdoor unit and a plurality of indoor units, and having an electromagnetic expansion valve and a silencer connected to each indoor unit in the distributor. It's about harmonics.

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, air conditioners can be broadly classified into a separate type air conditioner in which the outdoor unit and the indoor unit are separately installed, and an integrated air conditioner in which the outdoor unit and the indoor unit are integrally installed.

In addition, recently, a multi-type air conditioner has been released that can be effectively applied when installing two or more air conditioners in a home or when installing an air conditioner 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.

Therefore, a multi-type air conditioner has been developed, in which only one large outdoor unit having a sufficient refrigerant supply capacity is installed outside the building, and a distributor for distributing and supplying refrigerant from the outdoor unit to the indoor unit of each room is provided.

1 is a block diagram showing a refrigerant path of a conventional multi-type air conditioner. As shown in the figure, an outdoor unit 10 having an outdoor heat exchanger (not shown) for exchanging heat with outdoor air and a compressor (not shown) for compressing a refrigerant at high temperature and high pressure is formed on the outdoor side.

An indoor unit 20 having an indoor heat exchanger (not shown) that exchanges heat with indoor air by a refrigerant supplied from the outdoor unit 10 is formed on the indoor side, and the outdoor unit 10 and the plurality of indoor units 20 are provided. Distributors 30 are formed in front of each indoor unit 20 to control the flow between the outdoor unit 10 and the indoor unit 20.

Therefore, the refrigerant supplied from the one outdoor unit 10 performs air conditioning in each indoor space R requiring air conditioning through the plurality of indoor units 20, wherein the outdoor unit 10 and The refrigerant flow between the indoor unit 20 and the outdoor unit 10 is controlled by the distributor 30 formed between each indoor unit 20.

That is, the refrigerant of the outdoor unit 10 flows into the indoor unit 20 at an appropriate flow rate through the distributor 30, and each indoor unit 20 is provided with a distributor 30 corresponding to each indoor unit 20. The flow rate of the refrigerant flowing into is individually controlled.

2 and 3 show the structure of a distributor which is a main component of the multi-type air conditioner according to the prior art. As shown in the drawing, the distributor 30 includes a casing 40 forming an outer shape and an outdoor pipe connecting portion 42 and an indoor pipe connecting portion 44 connected to the refrigerant pipes 52 and 54 through which the refrigerant flows. Is formed.

The casing 40 is formed in a substantially rectangular shape to protect the components inside the distributor 30. In addition, one side surface of the casing 40 is formed with an outdoor pipe connection part 42 connected to the outdoor side pipe 52 through which the refrigerant flows from the outdoor unit 10, and supplies the refrigerant to the indoor unit 20. An indoor pipe connection part 44 connected to the side pipe 52 is formed.

An input pipe 56 is formed inside the casing 40 to be a passage through which the refrigerant flows to the electronic expansion valve 60, which will be connected to the outdoor pipe connecting portion 42 and will be described below. At one side of the) is formed a strainer 50 for filtering foreign matter contained in the refrigerant flowing through the input pipe 56.

In addition, an electromagnetic expansion valve 60 is formed on a part of the input pipe 56. The electromagnetic expansion valve 60 reduces the refrigerant flowing from the outdoor unit 10 and adjusts the flow rate of the refrigerant supplied to the indoor unit 20.

One side of the electromagnetic expansion valve 60 is connected to the input pipe 56 and the other side is connected to the output pipe 62. The output pipe 62 is a pipe for guiding the refrigerant decompressed through the electronic expansion valve 60 inside the distributor 30 to the outside of the distributor 30, and one side thereof is connected to the electromagnetic expansion valve 60. The other side is connected to the indoor pipe connection 44.

In addition, dew condensation may be prevented from occurring on the surfaces of the input pipe 56 and the output pipe 62 by the refrigerant entering and exiting the casing through the outdoor pipe connection part 42 and the indoor pipe connection part 44. In order to form a heat insulating material 70 on the outer peripheral surface of the input pipe 56 and the output pipe 62.

On the other hand, since the operation of the electromagnetic expansion valve 60 is controlled by an external control unit (not shown), the connection line 72 connecting the electromagnetic expansion valve 60 and the control unit casing 40 of the distributor 30. Exposed to) extends to the control unit of the indoor unit (20).

Hereinafter, the operation of the conventional multi-type air conditioner having the configuration as described above will be described.

Referring to the cooling operation of the multi-type air conditioner, the compressor (not shown) provided inside the outdoor unit 10 compresses the refrigerant at high temperature and high pressure, and the refrigerant compressed at high temperature and high pressure is an outdoor heat exchanger ( After the heat exchange with the outdoor air is carried out (not shown), it is transferred to each indoor space (R) where air conditioning is required through a high-pressure pipe (12) which is a passage through which a high-pressure refrigerant moves.

In addition, the refrigerant transferred through the high pressure tube 12 is branched into each indoor space (R) and flows into the indoor unit (20) provided in each indoor space (R).

At this time, the distributor 30 is provided between the outdoor unit 10 and the indoor unit 20 is provided with an electronic expansion valve 60 for adjusting the refrigerant flow rate. Therefore, the refrigerant of the outdoor unit 10 is supplied to the indoor unit 20 through the distributor 30 as much as necessary. The distributor 30 is connected to one indoor unit 20 of each indoor space R to individually control refrigerant flow to each indoor unit 20.

The refrigerant introduced into the indoor unit 20 cools the indoor space R by heat-exchanging with indoor air through the indoor heat exchanger (not shown), and the refrigerant passage passing through the indoor heat exchanger is a low pressure refrigerant moving passage again. The low pressure pipe 14 is introduced into the outdoor unit 10 to complete the cycle.

On the other hand, in more detail with respect to the operation inside the distributor, the outdoor pipe (52) branched from the high-pressure pipe 12 connected to the outdoor unit 10 by the outdoor pipe connecting portion 42 and conveys the refrigerant and the distributor ( 30) The input pipe 56 therein is coupled so that the high pressure refrigerant flows into the distributor 30.

The high pressure refrigerant introduced into the distributor 30 passes through the strainer 50, and foreign substances contained in the refrigerant are filtered and introduced into the electromagnetic expansion valve 60. The electronic expansion valve 60 controls the amount of refrigerant flowing into the indoor unit 20 by supplying the required amount of refrigerant to the indoor unit 20 according to the temperature of each indoor space R to provide cooling performance of the indoor unit 20. Adjust

The output pipe 62 for guiding the refrigerant passing through the electromagnetic expansion valve 60 from the inside of the distributor 30 to the outside and the indoor side pipe 52 for supplying the refrigerant to the indoor unit 20 are indoor pipe connection parts 44. Combined by). Then, the refrigerant passing through the distributor 30 is introduced into the indoor unit 20 through the indoor side pipe 52.

However, the above conventional technologies have the following problems.

In the conventional configuration as described above, since the distributor 30 for controlling the refrigerant flow between the outdoor unit 10 and the plurality of indoor units 20 is configured for each indoor unit 20, one distributor 30 is provided for each indoor unit 20. Will be required.

Therefore, in order to provide the indoor unit 20 in the plurality of indoor spaces (R) there is a problem that the cost required to configure the entire system of the multi-type air conditioner increases.

In addition, since each distributor 30 is formed adjacent to each indoor unit 20 and distributedly installed in various places, a problem arises that it is difficult to efficiently manage the distributor 30, thereby degrading serviceability.

In addition, a control unit for controlling each of the electromagnetic expansion valve 60 is configured separately so that a separate connection line 72 for connecting to the control unit is formed for each distributor 30. This causes not only an increase in production cost but also a problem of impairing serviceability and deteriorating a customer's satisfaction because of poor appearance.

Accordingly, an object of the present invention is to solve the problems of the prior art as described above, and to form a distributor for controlling the refrigerant flow between the outdoor unit and the plurality of indoor units as one and the electronic expansion valve connected to each indoor unit in the distributor It is to provide a multi-type air conditioner is formed with a silencer.

According to a feature of the present invention for achieving the above object, the present invention is an outdoor unit having an outdoor heat exchanger for heat exchange with the outdoor air; A plurality of indoor units provided with an indoor heat exchanger which exchanges heat with indoor air; Comprising a distributor for controlling the flow of refrigerant between the outdoor unit and a plurality of indoor units, the casing forming the appearance of the distributor is a plurality of electromagnetic expansion valve for controlling the flow rate of the refrigerant, a plurality of silencers to remove noise Is provided, the inside of the casing is divided into a filling portion filled with the foaming liquid and the silencer is located, the electromagnetic expansion valve is located and not exposed foaming, the internal pipe of the distributor is exposed to the outside It is characterized in that both ends are surrounded by a heat insulating material.

The distributor is formed separately from the outdoor unit and the indoor unit.

The outer side of the distributor, characterized in that the socket for connecting the pipes to the input and output the inner pipe is formed.

One side of the casing is characterized in that the control unit for controlling the electronic expansion valve is formed.

The control unit, the control PCB for controlling the electronic expansion valve; A PCB case formed on one side of the casing to receive the control PCB; And a control part cover that shields the PCB case and is removable.

delete

The distributor can be connected in parallel with an additional distributor.

According to the multi-type air conditioner according to the present invention having such a configuration, the installability of the indoor unit and the outdoor unit of the multi-type air conditioner is improved and the serviceability is improved.

Hereinafter, the configuration of a preferred embodiment of a multi-type air conditioner according to the present invention as described above will be described in detail with reference to the accompanying drawings.

4 is a block diagram showing the configuration of a multi-type air conditioner according to the present invention. According to the drawings, the multi-type air conditioner exchanges heat with the outdoor air and the outdoor unit 100 having the outdoor heat exchanger 110 performing heat exchange with the outdoor air and the compressors 120 and 122 for compressing the low temperature and low pressure refrigerant into the high temperature and high pressure refrigerant. An indoor unit 200 equipped with an indoor heat exchanger 210, and a distributor 300 for controlling the flow of refrigerant from the outdoor unit 100 to each indoor unit 200.

The refrigerant compressed by the compressors 120 and 122 in the outdoor unit 100 is heat-exchanged with the outdoor air by the outdoor heat exchanger 110. The outdoor unit 100 is in communication with one end of the high pressure pipe 400.

The high pressure pipe 400 is a single pipe through which a high pressure refrigerant flows to the distributor 300, and the other end of the high pressure pipe 400 communicates with the distributor 300. Therefore, the high pressure refrigerant is guided from the outdoor unit 100 to the distributor 300.

The refrigerant introduced into the distributor 300 uses the electronic expansion valve 650 formed inside the distributor 300 to provide refrigerant to the indoor unit 200 and the distributor 300 by the flow rate required for each indoor unit 200. It is supplied to the indoor unit 200 through the high-pressure connecting pipe 500 to connect.

Then, the refrigerant introduced into the indoor unit 200 is heat-exchanged with the indoor air through the indoor heat exchanger 210 to control the temperature of the indoor space (R). The refrigerant passing through the indoor unit 200 is guided back to the distributor 300 through the low pressure connection pipe 520.

The plurality of low pressure connection pipes 520 communicate with the low pressure side pipe 700 inside the distributor 300, and the low pressure side pipe 700 is connected to the low pressure pipe 420 outside the distributor 300. . Therefore, the refrigerant flows back into the outdoor unit 100 through the low pressure pipe 420 to complete the cycle.

5 and 6 are perspective views showing the external appearance of the distributor which is a main component of the multi-type air conditioner according to the preferred embodiment of the present invention. It is formed by the casing 310 and the upper panel 320 to form the outer appearance of the upper surface and the control unit cover 330 to form a portion of the lower surface.

The casing 310 is formed in a substantially hexahedral shape having an upper opening, and an open end portion of the upper casing 310 is bent inward to be easily coupled to the upper panel 320 that shields the upper surface.                     

Each corner portion of the upper panel 320 is provided with a mounting bracket 322 for attaching the distributor 300 to the ceiling or wall. One side of the mounting bracket 322 is coupled to the upper panel 320 and the other side is formed to extend outwardly horizontally with the upper panel 320. A screw hole 324 for screwing is formed on the outer side of the extended portion, and a hook groove 326 for installing the distributor 300 on a support (not shown) formed separately is formed on the inner side.

On the other hand, the lower portion of the casing 310 is formed to be stepped, the stepped surface control PCB (332) and PCB case (334) to be described below is formed. Then, the control cover 330 for shielding the PCB case 334 is formed to be removable. When the control unit cover 330 is mounted, the overall appearance of the distributor 300 is completed in a substantially hexahedral shape.

An outdoor side high pressure socket 620 is formed on the left side of the casing 310 (see FIG. 5). The outdoor side high pressure socket 620 has a high pressure pipe 400 for transferring the high pressure refrigerant compressed by the compressors 120 and 122 in the outdoor unit 100 to the distributor 300 and the high pressure side of the distributor 300. It is preferable to use a flare socket as a socket to facilitate the connection with the pipe 600.

An outdoor side low pressure socket 720 is formed at a side of the outdoor high pressure socket 620. The outdoor side low pressure socket 720 is a low pressure refrigerant after the heat exchange in the indoor unit 200 through the low pressure side pipe 700 inside the distributor 300 through the low pressure pipe 420 through the outdoor unit 100 It is preferable to use a flare socket as a socket for facilitating the connection of the low pressure pipe 420 and the low pressure side pipe 700 to be introduced into.

An indoor high pressure socket 640 is formed on the opposite side corresponding to one side of the casing 310 in which the outdoor low pressure socket 720 and the outdoor high pressure socket 620 are formed. The indoor high pressure socket 640 allows the high pressure side pipe 600 inside the distributor 300 and the high pressure connecting pipe 500 for transferring the high pressure refrigerant to the indoor unit 200 to be easily coupled to each other. . In addition, the indoor high pressure socket 640 preferably uses a flare socket.

An indoor low pressure socket 740 is formed below the indoor high pressure socket 640. The indoor low pressure socket 740 allows the low pressure connection pipe 520 to which the refrigerant which has completed heat exchange in the indoor unit 200 to be transferred, and the low pressure side pipe 700 inside the distributor 300 can be easily coupled. . In addition, the indoor low pressure socket 740 also preferably uses a flare socket.

The indoor high pressure socket 640 and the indoor low pressure socket 740 are formed by the number of indoor units 200 connected to the distributor 300, and each of the indoor high pressure socket 640 and the indoor low pressure socket 740 Are arranged side by side at the top and bottom, respectively.

In addition, both ends of the inner pipes 600 and 700 of the distributor 300 connected to the plurality of sockets 620, 640, 720 and 740 formed on the outside of the distributor 300 are different from each other in the temperature of the refrigerant transferred from the inside of the pipes 600 and 700. The heat insulating material 800 for preventing dew condensation by is formed.

On the other hand, the side of the portion formed to protrude downward from the casing 310 is formed with a foam liquid main inlet 340 for injecting the foaming liquid (P) to prevent the noise inside the casing (310). The foam liquid P is filled through the foam liquid inlet 340 to foam the inside of the casing 310.

On the side surface of the casing 310, the control cover 330 is formed, the entrance and exit of the connection line 652 for connecting the electronic expansion valve 650 in the casing 310 and the control PCB 332 to be described below The cable hole 350 to be formed.

The PCB case 334, on which the control PCB 332 will be described, is formed on the stepped surface of the casing 310 in which the cable hole 350 is formed, and more specifically, the casing 310 in which the control cover 330 is formed. do. The control PCB 332 is a circuit for controlling the electronic expansion valve 650 in the casing 310, the control PCB 332 and the PCB case 334 is shielded by the control cover 330. .

7 is a plan view showing the internal structure of the dispenser according to the present invention. According to the drawing, the inside of the dispenser 300 is filled with a foam liquid P filled by a barrier 360 having a substantially square plate shape ( 370 and the electronic expansion valve 650 is divided into two parts of the exposed portion 380 is exposed. A plurality of through holes are formed in the barrier 360, and the high pressure side pipe 600 and the low pressure side pipe 700 are formed through the through holes.

On the inner bottom surface of the casing 310 is formed a low pressure side pipe 700 which is a passage through which the refrigerant that has completed heat exchange in the indoor unit 200 flows inside the distributor 300, and the low pressure side pipe 700 is formed. The high-pressure side pipe 600 is formed to be a passage through which the high-pressure refrigerant supplied from the outdoor unit 100 flows inside the distributor 300.

At both ends of the low pressure side pipe 700, an indoor low pressure socket 740 and an outdoor low pressure socket 720 are formed, so that the low pressure side pipe 700 and the external pipes 520 and 420 are easily connected. In addition, the inner side high pressure socket 640 and the outdoor side high pressure socket 620 are formed at both ends of the high pressure side pipe 600, respectively, so that the high pressure side pipe 600 and the external pipes 500 and 400 are easily connected. do.

On the other hand, the low-pressure side pipe 700 and the high-pressure side pipe 600, the heat insulating material 800 is formed in the portion adjacent to each of the sockets (620, 640, 720, 740) formed at both ends. The heat insulating material 800 is formed so as to surround the outer peripheral surfaces of the low pressure side pipe 700 and the high pressure side pipe 600 so that the low pressure side pipe 700 and the high pressure side pipe 600 are not exposed to the outside.

8 is a perspective view showing a low pressure side pipe of a distributor which is a main component of a multi-type air conditioner according to a preferred embodiment of the present invention. As shown in the drawing, a part of the low pressure side pipe 700 is branched into a plurality of pipes. The low pressure socket 740 is formed at each end and is formed to be joined to one pipe in the filling part 370.

A portion of the low pressure side pipe 700 formed by joining a plurality of pipes is inside of the filling part 370 to prevent a flow rate of the internal flow flowing from the low pressure side pipe 700 branched into a plurality into one place. It is formed to bypass once. The length of the barrier 360 extends through the through hole formed in the barrier 360 to pass through the exposed portion 380.

In addition, at the end of the extended portion of the low pressure side pipe 700, an outdoor side low pressure socket 720 capable of easily connecting the low pressure pipe 420 connected to the outdoor unit 100 and the low pressure side pipe 700 is provided. Formed.

9 is a perspective view showing the high-pressure side pipe of the distributor which is a main component of the multi-type air conditioner according to the preferred embodiment of the present invention. According to the drawing, the high-pressure side pipe 600 is an outdoor side high pressure socket 620 at both ends. And a high pressure side socket 640 is formed, and the high pressure side pipe 600 connected to the outdoor high pressure socket 620 is branched into a plurality of high pressure side pipes 600 by a branch pipe 670.

Each of the branched high pressure side pipes 600 is connected to the electromagnetic expansion valve 650 and the silencer 660 in turn, and each of the branched high pressure side pipes 600 supplies refrigerant to each indoor unit 200. An indoor high pressure socket 640 is formed at the end of the high pressure side pipe 600 for easy coupling with the high pressure connection pipe 500 for supplying.

The outdoor high pressure socket 620 is formed of a flare socket to easily connect the high pressure pipe 400 and the high pressure side pipe 600. The high pressure side pipe 600 is formed to extend by a predetermined length, and a portion of the high pressure side pipe 600 is formed with a strainer 680 for filtering foreign matter in the flowing refrigerant.

After passing through the strainer 680, the high-pressure side pipe 600 is formed to be bent in a substantially '⊃' shape when viewed from the front, the branch pipe 670 is formed at the end of the bent portion. The branch pipe 670 is formed of brass, the conical shape of the tap portion is connected to a single pipe portion of the high-pressure side pipe 600 and the bottom portion is branched into a plurality of pipes.

In the high pressure side pipe 600 branched into the plurality of pipes, an electromagnetic expansion valve 650 is formed in a portion of each pipe to control the flow rate of the refrigerant flowing through the high pressure side pipe 600. After the electromagnetic expansion valve 650, a silencer 660 is formed to remove noise generated during the flow of the refrigerant.

The silencer 660 is formed in a somewhat larger cylindrical shape than the high pressure side pipe 600. The silencer 660 is a refrigerant flowing through the high-pressure side pipe 600 having a relatively narrow cross-sectional area suddenly diffuses through a wide cross-section pipe to remove the noise.

On the other hand, the high-pressure side pipe 600 connected to one side of the muffler 660 is extended by a predetermined length end is connected to the indoor side high-pressure socket 640. The indoor high pressure socket 640 connects the high pressure side pipe 600 and the high pressure connection pipe 500 so that the high pressure refrigerant transferred through the high pressure side pipe 600 can be supplied to the indoor unit 200. do.

The indoor high pressure socket 640 preferably uses a flare socket to facilitate coupling of the high pressure side pipe 600 and the high pressure connection pipe 500.

FIG. 10 is a perspective view showing one side of the distributor, which is a main component of the multi-type air conditioner, foamed according to a preferred embodiment of the present invention. As shown in the drawing, the upper panel 320 of the casing 310 is shown. Removing and exposing the inside of the distributor 300, the casing 310 is divided into two parts, the exposed portion 380 and the filling portion 370 by the barrier (360).

The exposed part 380 is formed on the side surface on which the indoor high pressure socket 640 and the indoor low pressure socket 740 are formed based on the barrier 360, and is opened upward. A plurality of electromagnetic expansion valves 650 formed on one side of the high pressure side pipe 600 are formed in the exposed part 380.                     

The electromagnetic expansion valve 650 is formed in the same number as the indoor unit 200 connected to the distributor 300, and is connected to the high pressure side pipe 600 passing through the barrier 360. The connection line 652 connected to each of the electromagnetic expansion valves 650 is connected to the control PCB 332 formed on the bottom surface of the casing 310 through the cable hole 350 formed on one side of the casing 310. .

In addition, a portion of the low pressure side pipe 700 and the high pressure side pipe 600 passes through the side portion of the casing 310 opposite to the barrier 360 above the electromagnetic expansion valve 650. The low pressure side pipe 700 is a portion coming out through the indoor unit 200 and the high pressure side pipe 600 is connected to the outdoor unit 100 is a portion where the high-pressure refrigerant flows into the distributor 300.

The filling part 370 has a portion of the low pressure side pipe 700 and the high pressure side pipe 600 formed therein, and the high pressure side pipe 600 is branched into a plurality of pipes therein. One silencer 660 is attached to each of the plurality of branched pipes.

In addition, in addition to installing a silencer 660 in order to prevent noise generated when the high temperature and high pressure refrigerant passes through a narrow tube, the foaming liquid (P) through the foam liquid inlet 340 formed at one side of the casing 310. ) Is injected to foam the entire filling part 370.

In this case, the reason why the entire casing 310 is not foamed is to improve serviceability of the electromagnetic expansion valve 650. In addition, the barrier 360 dividing the exposed part 380 and the filling part 370 prevents the foaming liquid P of the filling part 370 from entering the exposed part 380.

Hereinafter, the operation of the air conditioner according to the present invention having the configuration as described above will be described with reference to FIG.

As described above, in the multi-type air conditioner according to the present invention, a plurality of indoor units 200 are connected to one outdoor unit 100, and some or all indoor units 200 are operated according to a user's selection.

When the air conditioner is operated (cooling operation), the outdoor solenoid valve 130 is opened so that the refrigerant flows between the outdoor unit 100 and the indoor unit 200. At this time, the amount of refrigerant is controlled by the electronic expansion valve 650 formed in the distributor 300, and the electronic expansion valve 650 inside the distributor 300 which is not used is closed.

First, referring to the refrigerant flow in the outdoor unit 100, the gas refrigerant flowing from the indoor unit 200 passes through the four-way valve 140 and then enters the accumulator 150. The gas refrigerant passing through the accumulator 150 is introduced into the compressors 120 and 122.

The compressors 102 and 122 are composed of a constant speed compressor 120 rotating at a constant frequency according to a required cooling capacity and an inverter compressor 122 rotating at an adjustable frequency. Only 120 and 122 operate to compress the amount of refrigerant required.

The refrigerant compressed by the compressors 120 and 122 passes through the oil separator 160 after passing through the compressors 120 and 122. In the oil separator 160, oil contained in the refrigerant is separated and recovered to the compressors 120 and 122 through the oil recovery pipe 162.

That is, as the refrigerant is compressed in the compressors 120 and 122, the 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 160, which is a gas-liquid separator.

The refrigerant passing through the oil separator 160 flows into the outdoor heat exchanger 110 through the four-way valve 140. Since the outdoor heat exchanger 110 acts as a condenser (in the cooling mode), the refrigerant is cooled through heat exchange with external air to become a liquid refrigerant. The refrigerant heat-exchanged through the outdoor heat exchanger 110 is introduced into the receiver 170 by opening the outdoor solenoid valve 130.

The receiver 170 is a device for temporarily storing the refrigerant liquefied in the condenser so that the operation of the air conditioner operates smoothly even if the amount of refrigerant consumed in the indoor heat exchanger 210 used as the evaporator is changed.

The refrigerant passing through the receiver 170 passes through a dryer 180 to remove moisture contained in the refrigerant, and then connects a refrigerant flow between the outdoor unit 100 and the distributor 300 outside the outdoor unit 100. It is introduced into the distributor 300 by the 220.

The connector 220 is formed in a substantially 'Y' shape, and is used when the plurality of distributors 300 are connected in parallel. Therefore, the branched to both sides is connected to the distributor 300 and the other side is connected to the outdoor unit 100 so that one or two distributors 300 can be connected. And if necessary, it is also possible to connect two or more distributors 300 by connecting the plurality of connectors 220.                     

The refrigerant passing through the connector 220 is transferred to the outdoor high pressure socket 620 formed on the outside of the distributor 300 by the high pressure pipe 400 and flows into the distributor 300. The refrigerant introduced into the distributor 300 flows along the high pressure side pipe 600 inside the distributor 300.

At this time, the refrigerant passing through the outdoor side high pressure socket 620 passes through a strainer 680 for removing foreign matters contained in the refrigerant, and the refrigerant passing through the strainer 680 by a branch pipe 670 formed of brass. As many as the indoor unit 200 is branched into a plurality of high-pressure side pipe (600). Each branch of the high pressure side pipe 600 branched in this way is provided with an electromagnetic expansion valve 650, respectively.

The flow rate of the refrigerant distributed to each of the high pressure side pipes 600 by the branch pipe 670 is controlled by the electromagnetic expansion valve 650. That is, the amount of refrigerant required to achieve the cooling effect required by the indoor unit 200 connected to each of the high pressure side pipes 600 is supplied.

As much as the refrigerant controlled by the electromagnetic expansion valve 650 passes through the silencer 660 provided next to the electromagnetic expansion valve 650. The silencer 660 is formed to remove the noise generated while passing through the high-pressure side pipe 600 to primarily remove the noise generated during the flow of the refrigerant.

In addition, the space inside the distributor 300 in which the silencer is formed, that is, the filling part 370 partitioned by the barrier 360 is filled by the foaming liquid P again, so that the silencer 660 does not have noise. Secondary removal prevents noise from leaking to the outside.

The refrigerant passing through the silencer 660 reaches the indoor side high pressure socket 640 outside the distributor 300 along the high pressure side pipe 600. The indoor side high pressure socket 640 connects the high pressure connecting pipe 500 connected to the indoor unit 200 and the high pressure side pipe 600 inside the distributor 300 to the indoor side high pressure socket 640 and the Refrigerant is introduced into each indoor unit 200 via a high-pressure connecting pipe 500 connected to each indoor unit 200.

The refrigerant introduced into each indoor unit 200 performs heat exchange with the air in the indoor space R requiring cooling by the indoor heat exchanger 210 inside the indoor unit. At this time, since the indoor heat exchanger 210 serves as an evaporator, the refrigerant becomes low pressure gas through heat exchange.

The refrigerant converted into a low pressure gas is introduced into the indoor low pressure socket 740 outside the distributor 300 along the low pressure connection pipe 520 connected to the indoor unit 200, and then into the inside of the distributor 300. Inflow. The refrigerant introduced into the distributor 300 passes through the low pressure side pipe 700, and the low pressure side pipe 700, which is divided into a plurality, is joined to a single pipe, so that the outdoor low pressure socket outside the distributor 300 ( 720).

The refrigerant passing through the outdoor low pressure socket 720 is transferred along the low pressure pipe 420 coupled to the outdoor low pressure socket 720, and passes through a connector 220 for parallel connection of the distributor 300. It flows into the outdoor unit 100. The refrigerant introduced into the outdoor unit 100 through the connector 220 enters the accumulator 150 through the four-way valve 140.                     

In the accumulator 150, 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 122. Through this process, one cycle is completed.

On the other hand, when it is operated by heating operation, the refrigerant flows in the opposite direction to the above.

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

In the air conditioner according to the present invention as described in detail above, by separating the electromagnetic expansion valve and the silencer mounted inside the outdoor unit or indoor unit separately to form a separate distributor, the installation and quietness and miniaturization of the indoor unit and the outdoor unit, Significantly improved.

In addition, the electronic expansion valve and the silencer are formed as many as the number of indoor units used, so that each indoor unit can be independently controlled, and a plurality of indoor units can be used more effectively simultaneously or individually, thereby improving operating performance.

In addition, the distributor is provided with all the electromagnetic expansion valve connected to each indoor unit, the control unit for controlling the electromagnetic expansion valve is mounted on the distributor not only to reduce unnecessary wiring, but also generated in the electromagnetic expansion valve or control unit When service is needed due to a problem, it is possible to take an action more easily, so that serviceability can be greatly improved.

In addition, a plurality of spaces requiring air conditioning are formed, and when the positions vary, the distributors can be connected in parallel by using connectors, so that more indoor units can be connected and actively applied to various installation environments and forms. You can do it.

In addition, the electromagnetic expansion valve is separated from the indoor unit and formed at a distance from the indoor unit, and provided with a silencer to remove noise generated during refrigerant flow, and to minimize the generation of noise by filling the mounting portion inside the distributor with the silencer with foaming liquid. Can be reduced.

Therefore, it is possible to solve the noise problem that is a problem when using the air conditioner and by configuring the indoor unit with a minimum of components it is possible to configure the product more compact can be expected to the effect that can maximize the customer's satisfaction.

Claims (7)

An outdoor unit having an outdoor heat exchanger which exchanges heat with outdoor air; A plurality of indoor units provided with an indoor heat exchanger which exchanges heat with indoor air; Comprising a distributor for controlling the flow of refrigerant between the outdoor unit and the plurality of indoor units, The casing forming the exterior of the distributor is provided with a plurality of electromagnetic expansion valve for adjusting the flow rate of the refrigerant, a plurality of silencers for removing noise, The inside of the casing is divided into a filling part filled with a foaming liquid and a foaming liquid, and an exposed portion that is not foamed and the electromagnetic expansion valve is located, the inner pipe of the distributor so that both ends are not exposed to the outside A multi-type air conditioner, characterized by being surrounded by insulation. The multi-type air conditioner of claim 1, wherein the distributor is formed separately from the outdoor unit and the indoor unit. The outer side of the dispenser according to claim 1 or 2, The multi-type air conditioner, characterized in that the socket for connecting the inner pipe and the input and output pipes are formed. The multi-type air conditioner according to claim 3, wherein a control unit for controlling the electromagnetic expansion valve is formed at one side of the casing. The apparatus of claim 4, wherein the controller comprises: a control PCB for controlling the electromagnetic expansion valve; A PCB case formed on one side of the casing to receive the control PCB; And A multi-type air conditioner for shielding the PCB case and comprising a removable control cover. delete 4. The multi-type air conditioner of claim 3, wherein the distributor is connected in parallel with an additional distributor.

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