KR200327686Y1 - Pipe Laying Structure Of Multi-Air Conditioner - Google Patents

Abstract

The present invention relates to a piping structure of a multi air conditioner connecting a single outdoor unit and a multi indoor unit to form a flow of refrigerant, and the present invention comprises a single main refrigerant pipe extending from a single outdoor unit; A connection module having one end coupled to an end of the main refrigerant pipe and the other end branched to branch the refrigerant flowing through the main refrigerant pipe into at least two parts; Both ends provide a piping structure of a multi-air conditioner, characterized in that it comprises an auxiliary refrigerant pipe coupled to each of the connection module and the multi indoor unit.

By providing such a piping structure, the present invention is to be able to easily install a multi-unit indoor unit in one outdoor unit while reducing the number and length of the refrigerant pipe required.

Description

Pipe Laying Structure Of Multi-Air Conditioner

The present invention relates to a piping structure of a multi-air conditioner, and more particularly, to a piping structure of a multi-air conditioner to easily install a multi-unit indoor unit in one outdoor unit while reducing the quantity and length of the refrigerant pipe required as much as possible. .

As is well known, the refrigeration system is largely composed of closed circuits such as a compressor, a condenser and an evaporator. The refrigerant compressed in the compressor is condensed into the liquid phase through the condenser, and then evaporated in the evaporator. The evaporator generates cold air by using latent latent heat in the process of evaporating the refrigerant.

Home appliances to which such a refrigeration system is applied include an air conditioner including a refrigerator.

Among them, the air conditioner is composed of an indoor unit disposed indoors and an outdoor unit disposed outdoors, and a single indoor unit is also commonly released as a pair of outdoor units.

However, in order to increase energy consumption efficiency in recent years, multi-air conditioners employing a plurality of indoor units (also referred to as "multi-room units") in a single outdoor unit have emerged.

These air conditioners have been developed as a way to reduce the burden on the outdoor unit by using only one outdoor unit while each indoor unit in the living room or room.

By the way, when looking at the piping structure of this type of air conditioner, the number of the refrigerant pipes as much as the indoor unit is used to install a plurality of indoor units in one outdoor unit, in this case, there is a problem that a lot of unnecessary refrigerant tubes.

As a result, the inconvenience of piping work, as well as the economical problem was not preferred.

The present invention is devised to solve the above problems, the object of the present invention, while reducing the number and length of the refrigerant pipe required as much as possible to easily install the multi-air conditioner in one outdoor unit multi-air piping To provide structure.

1 is a perspective view of a multi-air conditioner to which the piping structure according to the present invention is applied;

FIG. 2 is a schematic refrigerant circuit diagram of a piping structure of the multi-air conditioner illustrated in FIG. 1.

Explanation of symbols on the main parts of the drawings

10: outdoor unit 20: first room

30: second room 40: main refrigerant pipe

50: connection module 60: auxiliary refrigerant pipe

The present invention for achieving the above object, in the piping structure of the multi-air conditioner to form a flow of the refrigerant by connecting a single outdoor unit and the multi indoor unit, a single main refrigerant pipe extending from the single outdoor unit; A connection module having one end coupled to an end of the main refrigerant pipe and the other end branched to branch the refrigerant flowing through the main refrigerant pipe into at least two parts; Both ends are achieved by providing a piping structure of a multi air conditioner, characterized in that it comprises an auxiliary refrigerant pipe coupled to each of the connection module and the multi indoor unit.

Here, when the multi-indoor unit is composed of first and second indoor units, the main refrigerant pipe may include a discharge portion through which refrigerant is discharged to the first and second outdoor units, and the refrigerant from the first and second outdoor units is returned. Consisting of a return portion; A discharge branch pipe coupled to the discharge portion along a direction in which the refrigerant flows, and a return branch pipe coupled to the return portion in the connection module; The auxiliary coolant pipe is coupled to the end of the discharge branch pipe and sends first and second refrigerant pipe portions to the first and second chambers, and the return branch pipe is connected to the first and second chambers. And a third and fourth refrigerant pipe portion for guiding the refrigerant of the refrigerant into the return portion of the main refrigerant pipe.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention.

1 is a perspective view of a multi air conditioner to which a piping structure according to the present invention is applied, and FIG. 2 is a schematic refrigerant circuit diagram according to a pipe structure of the multi air conditioner illustrated in FIG. 1.

As shown in these figures, in the multi-air conditioner to which the present invention is applied, the first and second indoor units 20 and 30 are coupled to one outdoor unit 10.

The outdoor unit 10 is disposed in the outdoor main body 12 and the opening 13 region formed on the front of the outdoor main body 12, and a blowing fan for discharging heat generated in the outdoor unit 10 through the opening 13 ( Not shown).

Although not shown, the outdoor unit 10 is equipped with a compressor for compressing the refrigerant, a condenser for condensing the compressed refrigerant in the liquid phase, and other valves.

In the present embodiment, the indoor unit employs a first indoor unit 20 called a stand type and a second indoor unit 30 called a wall type.

The stand-shaped first indoor unit 20 includes a first indoor casing 21 having a predetermined device component mounted therein and having an open front surface, and a first front cover forming a front surface of the first indoor casing 21. 22).

A first suction opening 23 is formed in the lower region of the first front cover 22, and a heat exchange is formed in the upper region of the first front cover 22 facing the first suction opening 23. The first discharge port 24 for discharging the cold air is formed.

And, between the first suction port 23 and the first discharge port 24 to operate and stop the operation of the first chamber 20, and to control the strength and blowing direction of the heat exchanged air and the operation of the first shutter (not shown) The first operation panel 25 is provided.

The wall-mounted second indoor unit 30 includes a second indoor casing 31 forming an external appearance, a second front cover 32 forming a front surface of the second indoor casing 31, and a second front cover ( It is provided in the lower part of 32, and has the 2nd discharge port 34 which discharges the heat exchanged cold air, and the 2nd shutter 36 which opens and closes the 2nd discharge port 34. As shown in FIG.

A plurality of second suction openings 33 are formed at an upper portion of the second indoor casing 31 to introduce outdoor hot air into the second indoor casing 31.

In the first and second indoor chambers 20 and 30, an evaporator which forms cool air by receiving refrigerant from a compressor and a condenser of the outdoor unit 10, and cool air as the first and second discharge ports 24 and 34. Blowers for blowing air are provided, but these are not shown.

On the other hand, between the outdoor unit 10 and the first and second indoor units (20, 30) is provided with a pipe structure to enable the circulation flow of the refrigerant therebetween.

As described above, the refrigeration system actually refers to the components such as the compressor, the condenser, the evaporator and the refrigerant pipes interconnecting them as a whole.

However, the present invention relates to a piping structure interconnecting the outdoor unit 10 and the first and second indoor units 20 and 30 except for components such as a compressor, a condenser, and an evaporator.

The piping structure according to the present invention, a single main refrigerant pipe 40 extending from a single outdoor unit 10, one end is coupled to the end of the main refrigerant pipe 40 and the other end is branched main refrigerant pipe 40 Connection module 50 for branching the refrigerant flowing through the at least two parts, and the auxiliary refrigerant pipe 60 is coupled to both ends of the connection module 50 and the first and second chambers (20, 30), respectively. do.

In fact, in the conventional piping structure, the outdoor unit 10 and the first and second indoor units 20 and 30 are each continuously connected to each other through a plurality of refrigerant pipes.

However, in this case, as described above, an unnecessary refrigerant pipe region is generated, resulting in a loss due to the use of the refrigerant pipe.

Therefore, in the present invention, by providing a separate connection module 50, the quantity and length of the refrigerant pipe that is used unnecessarily is reduced.

As shown in FIG. 2, the main refrigerant pipe 40 includes discharge portions 41 through which refrigerant is discharged from the outdoor unit 10 to the first and second indoor rooms 20 and 30, and the first and second indoor rooms. And a return portion 42 in which the refrigerant from 20 and 30 is returned.

Of course, the discharge portion 41 and the return portion 42 are each wound by one insulating tape or the like to form a single main refrigerant pipe 40.

In the connection module 50, the branched refrigerant is divided into two branches, and the discharge branch pipe 51 coupled to the discharge portion 41 along the direction in which the refrigerant flows, and the return branch pipe coupled to the return portion 42 ( 52).

Each of the discharge branch pipes 51 and the return branch pipes 52 has a single pipe structure toward the outdoor unit 10 side, and a double pipe structure branched toward the first and second indoor units 20 and 30 side. Has

First and second refrigerant pipe portions 61 and 62 of the auxiliary refrigerant pipe 60 are connected to branch ends of the discharge branch pipe 51, respectively.

Both ends of the first refrigerant pipe portion 61 communicate with one side 51a and the second chamber 30 of the branch ends of the discharge branch pipe 51, respectively. Both ends are connected to the other side 51b and the 1st indoor unit 20 among the branch ends of the discharge branch pipe 51, respectively.

On the other hand, the discharge branch pipe 51 may be equipped with a plurality of valves (V; V1, V2) that is selectively opened and closed.

Of course, these valves may be check valves or service valves.

In this case, the plurality of valves V1 and V2 may adjust the amount of refrigerant through on / off of a proper time.

That is, when the cooling capacity is insufficient only by opening one side valve V1 among the plurality of valves V1 and V2, the other valve V2 is repeatedly turned on / off at an appropriate time and the valve V1 is turned on. When the cooling capacity exceeds the set capacity only by opening the valve V1, the valve V1 is turned on / off at an appropriate time by opening the valve V1. The plurality of valves V; V1 and V2 interact with each other to appropriately adjust the amount of refrigerant to compensate for the cooling capacity.

Thus, the refrigerant flowing from the outdoor unit 10 flows into the discharge branch pipe 51 via the discharge portion 41 of the main refrigerant pipe 40.

It is then divided into two branches at the end of the discharge branch pipe 51 and directed to the first chamber 20 and the second chamber 30 along the first and second refrigerant pipe portions 61 and 62, respectively.

Similar to the discharge branch 51, the third and fourth refrigerant pipe portions 63 and 64 are connected to branch ends of the return branch 52.

Both ends of the third refrigerant pipe portion 63 communicate with one side 52a and the second chamber 30 of the branched ends of the return branch pipe 52, respectively. Both ends are connected to the other side 52b and the 1st indoor unit 20 among the branch ends of the return branch engine 52, respectively.

Accordingly, gaseous refrigerants required for heat exchange in the first and second indoor chambers 20 and 30 are branched ends of the return branch pipes 52 through the third and fourth refrigerant pipe sections 63 and 64, respectively. After being introduced and merged into one in the return branch pipe 52, it may be introduced into the outdoor unit 10 along the return portion 42 of the main refrigerant pipe 40.

As described above, according to the present invention, the main refrigerant pipe 40 extending from the outdoor unit 10 is formed as a single pipe as short as possible, and the connection module 50 is provided at the end of the main refrigerant pipe 40. By connecting with the first and second indoor (20, 30), it will have the advantage of reducing the number and length of the refrigerant pipe required as possible.

In the above-described embodiment, only the first and second indoor units 20 and 30 are illustrated to describe the present invention, but the idea of the present invention may be sufficiently applied even if three or more indoor units are attached to a single outdoor unit 10. will be.

In the above-described embodiment, the first indoor unit 20, which is called a stand type, and the second indoor unit 30, which is called a wall type, are employed. You can do it.

As described above, according to the present invention, by providing a connection module for connecting a plurality of indoor units to one outdoor unit, it is possible to easily install a multi-unit indoor unit to one outdoor unit while reducing the quantity and length of the refrigerant pipe required as much as possible. It works.

Claims (3)

In the piping structure of the multi air conditioner to form a flow of refrigerant by connecting a single outdoor unit and multi indoor unit, A single main refrigerant pipe extending from the single outdoor unit; A connection module having one end coupled to an end of the main refrigerant pipe and the other end branched to branch the refrigerant flowing through the main refrigerant pipe into at least two parts; Piping structure of the multi-air conditioner, characterized in that both ends include an auxiliary refrigerant pipe coupled to each of the connection module and the multi indoor unit. The method of claim 1, When the multi- indoor unit is composed of the first and second indoors, The main refrigerant pipe includes a discharge part through which refrigerant is discharged to the first and second outdoor units, and a return part by which refrigerant from the first and second outdoor units is returned; A discharge branch pipe coupled to the discharge portion along a direction in which the refrigerant flows, and a return branch pipe coupled to the return portion in the connection module; The auxiliary coolant pipe is coupled to the end of the discharge branch pipe and sends first and second refrigerant pipe portions to the first and second chambers, and the return branch pipe is connected to the first and second chambers. And a third and fourth refrigerant pipe portions for guiding the refrigerant of the refrigerant to the return portion of the main refrigerant pipe. The method of claim 2, The first and second refrigerant pipe portions branched from the discharge branch are provided with valves that are selectively opened and closed, respectively, and the plurality of valves are turned on / off at an appropriate time, and the amount of refrigerant as necessary for each cooling capacity. The piping structure of the multi-air conditioner, characterized in that to supply the complementary control to each other.