KR101620072B1 - Distribution structure of refrigerant pipe - Google Patents

Abstract

The present invention relates to a distribution structure of a refrigerant pipe, capable of: reducing manufacturing and producing costs as the distribution structure of the refrigerant pipe is easily processed and bonded; improving productivity; and preventing a distribution part and a bonding part from being damaged or deformed due to an inner pressure, thereby improving reliability on a product by reducing percent defective. The distribution structure of the refrigerant pipe includes: a refrigerant supply pipe having an inlet in which a refrigerant flows, an outlet from which the refrigerant flowing through the inlet is discharged, and a cutting groove formed on both ends facing each other in the outlet; and a pair of refrigerant distribution pipes fixed by enclosing the outer circumference of the outlet on both sides while being inserted into the cutting groove and supported in order for the refrigerant flowing into the refrigerant supply pipe to be discharged b being distributed, wherein the pair of refrigerant distribution pipes is welded and combined with the refrigerant supply pipe.

Description

Distribution structure of refrigerant pipe < RTI ID = 0.0 >

The present invention relates to a refrigerant pipe distributing structure for distributing refrigerant used in an air conditioner or a refrigerator. More specifically, the present invention relates to a refrigerant pipe distributing structure for distributing refrigerant used in an air conditioner or a refrigerator, And to a refrigerant pipe distributing structure capable of preventing a deformation or breakage of a joint portion due to an internal pressure and increasing a reliability of a product due to a decrease in a defective ratio.

2. Description of the Related Art Generally, an apparatus having a cooling function such as an air conditioner or a refrigerator includes a compressor for compressing a low-pressure gaseous refrigerant into a high-temperature and high-pressure gaseous state, and a compressor A condenser for converting the refrigerant into a liquid state at a middle temperature and a high pressure, an expansion valve for converting the condensed refrigerant into a low-temperature low-pressure liquid state through a capillary tube, And an evaporator for exchanging heat (heat absorption) to a gaseous state and returning the gas to the compressor, and a cooling cycle for circulating the refrigerant sequentially.

In this case, a refrigerant pipe is connected to the evaporator and the condenser to form a refrigerant passage. Particularly, a partition is provided at a connection portion between the expansion valve and the evaporator so that the refrigerant expanded in the expansion valve is distributed and supplied in two strands.

1, an aluminum material is die-cast to form an inlet 3 having a large diameter at one side of the main body 2 and a small-diameter inlet 3 at the other side thereof, There has been proposed an air conditioner refrigerant distributor in which two or more outlets 4 are formed and conical guide projections 5 are formed so as to be positioned at the center of the inlet 3 at the part where the outlets 4 are split.

However, since the refrigerant pipe connected to the expansion valve and the evaporator is made of copper (Cu), it is difficult to uniformly and firmly bond the refrigerant pipe with the distributor made of aluminum, thereby increasing the defect rate due to breakage of the joint.

2, the distributor 1 is composed of an inlet pipe 2 and an outlet pipe 3, 4 arranged linearly in an in-line shape, and the refrigerant introduced through the inlet pipe 2 flows into each of the outlet pipes 2, 3, 4) and then flows into the heat exchanger.

The distributor 1 according to FIG. 2 is made of brass, and the expansion valve and the evaporator connected to both sides of the distributor 1 are connected by a copper tube 5, and brass and copper ), It has been necessary to use a special electrode containing a high-priced silver component, thereby increasing costs such as a construction cost and a material cost.

Korean Patent Laid-Open Publication No. 1995-0010995 (May 15, 1995) discloses a branch pipe for circulating a refrigerant and a method for manufacturing the same. Korean Utility Model Application Publication No. 2010-0008045 (Dec. 12, 2010. Disclosed refrigerant distributor for air conditioner) Korean Unexamined Patent Application Publication No. 2010-0118384 (disclosed on May 5, 2010. Disclosure for refrigeration and air conditioning)

SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above-mentioned problems occurring in the prior art, and it is an object of the present invention to provide a refrigerant pipe which is uniformly and firmly coupled to a refrigerant pipe, The present invention provides a refrigerant pipe distribution structure capable of reducing the manufacturing cost, increasing the ease of processing, and improving the productivity, while preventing the refrigerant distribution site from being deformed or broken by the pressure inside the pipe.

In addition to ensuring a firm connection, the joint is also prevented from interfering with the movement of the refrigerant, so that the movement of the refrigerant is not impeded by the penetration of the welding liquid into the pipe, and the pressure acting on the joint is minimized And to provide a refrigerant pipe distribution structure capable of effectively withstanding the pressure acting on the dispensing site.

According to an aspect of the present invention, there is provided an air conditioner comprising: an inlet port through which a refrigerant is introduced; an outlet port through which the refrigerant introduced through the inlet port is discharged; and a cutout groove formed at both ends of the outlet port facing each other And a pair of refrigerant supply pipes which are welded to the refrigerant supply pipe and are welded to the refrigerant supply pipe, respectively, the outer periphery of the discharge port being fixedly held on both sides thereof while being inserted into the cut- Of the refrigerant pipe.

Preferably, the refrigerant distribution pipe is formed with a cutting portion cut at a predetermined height from the end of the refrigerant pipe.

The refrigerant distribution pipe may have a cut-out portion that is cut in a thickness corresponding to the discharge port to be fitted and fixed to the cut-out groove, and a corresponding side between the cut- It is preferable to form the bent portion bent into the inner region of the side wall.

In addition, it is preferable that the coolant supply pipe has a cross section of the discharge port wider than a cross section of the inflow port.

'형 중 어느 하나의 형상으로 형성된 것이 바람직하다.In addition, the outlet may be circular, elliptical,

Shaped 'shape, as shown in FIG.

As described above, according to the refrigerant pipe distribution structure of the present invention, even if a separate distributor is not provided, the refrigerant can be distributed and supplied uniformly and firmly through the shape modification of the refrigerant pipe, And the refrigerant distribution pipe are made of the same material, so that the ease of processing can be increased. At the same time, a general welding electrode can be used, and manufacturing cost is reduced.

In addition, the pair of refrigerant distribution pipes are joined to each other so that the area of the refrigerant distribution portion is minimized, while the joint portions are not located on the refrigerant flow path when the refrigerant supply pipe and the refrigerant distribution pipe are joined Thereby minimizing the pressure acting on the joint portion between the refrigerant and the refrigerant, thereby reducing the defective rate and preventing the deformation of the dispensing portion and increasing the reliability of the product, and preventing the welding fluid from penetrating into the pipe to prevent the refrigerant from moving The heat exchange efficiency is increased.

1 is a side view of a conventional refrigerant distributor for an air conditioner,
2 is a perspective view showing a conventional distributor for a refrigeration air conditioning system,
3 is a perspective view illustrating a refrigerant pipe distribution structure according to the first embodiment of the present invention,
4 is a partially exploded perspective view of FIG. 3,
FIG. 5 is an exploded perspective view of FIG. 3,
FIG. 6 is an exploded perspective view showing a state in which FIG. 5 is viewed in the opposite direction,
FIG. 7 is a cross-sectional view showing the AA sectional state of FIG. 3,
Fig. 8 is a longitudinal sectional view showing the cross-sectional state of Fig. 3B,
9 is a longitudinal sectional view showing a state where the refrigerant supply pipe and the refrigerant distribution pipe according to the first embodiment of the present invention are welded together,
FIG. 10 is an exploded perspective view showing a refrigerant supply pipe and a refrigerant distribution pipe according to a second embodiment of the present invention, FIG.
11 is a cross-sectional view showing a state in which a portion to which a refrigerant is divided according to a second embodiment of the present invention is cut in the lateral direction and is directed toward the refrigerant supply pipe side,
12 is a longitudinal sectional view of the refrigerant supply pipe and the refrigerant distribution pipe according to the second embodiment of the present invention,
13 is a vertical sectional view showing a state in which a coolant supply pipe and a coolant distribution pipe according to a second embodiment of the present invention are welded together in a longitudinal direction.

Prior to the description, components having the same configuration are denoted by the same reference numerals as those in the first embodiment. In other embodiments, configurations different from those of the first embodiment will be described do.

Hereinafter, a refrigerant pipe distribution structure according to a first embodiment of the present invention will be described in detail with reference to FIGS. 1 to 9 attached hereto.

The refrigerant pipe distribution structure according to the first embodiment of the present invention is configured such that the refrigerant is dispensed and discharged even if a separate distributor is not provided. The refrigerant pipe is mainly composed of a refrigerant supply pipe 100 and a refrigerant distribution pipe 200.

Here, the refrigerant supply pipe 100 and the refrigerant distribution pipe 200 are made of copper (Cu) like a refrigerant pipe installed in a device having a conventional cooling function.

The refrigerant supply pipe 100 includes an inlet 110 through which the refrigerant flows, an outlet 120 through which the refrigerant introduced through the inlet 110 flows out, and an inlet 110 at opposite ends of the outlet 120, (Not shown).

' 형 중 어느 하나의 형상으로 형성될 수 있는 것으로, 본 제1실시예에 따른 배출구(120)는 '

' 형상인 것으로 설명한다.Here, the outlet 120 may be circular, oval, rectangular,

The discharge port 120 according to the first embodiment may be formed in any shape of '

'Shape.

In this case, it is preferable that the cutout grooves 121 are formed at the centers of the opposite sides of the mutually facing surfaces. When the cutouts 121 are divided into two different regions through the cutout grooves 121, So that the refrigerant can be smoothly moved.

The refrigerant distribution pipe 200 is formed in a pair so that the refrigerant introduced into the refrigerant supply pipe 100 is discharged and discharged. The refrigerant is supplied to and supported by the cutout groove 121 and the outer peripheral surface of the discharge port 120 is wrapped So as to be welded in a fixed state.

In other words, the refrigerant distribution pipe 200 is supported by one side of the incision groove 121, and is connected to the first distribution port 211 and the first distribution port 211 which are fixed by surrounding one outer circumferential surface of the discharge port 120, A first distribution member 210 formed of a first discharge port 215 through which the refrigerant discharged from the first discharge port 215 is discharged, a second distribution port 221 which is held by being supported on the other side of the discharge surface, And a second dispensing member 220 formed of a second dispensing opening 225 through which the refrigerant introduced into the second dispensing opening 221 is discharged so that the refrigerant introduced into the refrigerant supply pipe 100 flows into the first dispensing member 210 And the second distribution member 220 and discharged.

Here, the first distribution member 210 and the second distribution member 220 are formed as a pair and are not necessarily formed to have the same size, but may be formed of a material that can be fitted so as to surround the outer peripheral surface of the discharge port 120 When the first distribution member 210 and the second distribution member 220 are formed to have different sizes, the size of the cutout groove 121 may be determined in consideration of the position where the first distribution member 210 and the second distribution member 220 are fitted to the discharge port 120. [ The formation position should be changed.

Although the side surfaces of the first and second distribution members 210 and 220 according to the first embodiment are positioned adjacent to each other in the incision groove 121, And may be formed as closely as possible.

The first distribution port 211 and the second distribution port 221 are welded to the refrigerant supply pipe 100 and the first distribution port 211 and the second distribution port 211, And is also welded to the volleyballs 221 to prevent deformation or breakage of the first distribution port 211 and the second distribution port 221 which are inserted and supported by the incision surface while the refrigerant is moving.

At this time, the side where the refrigerant distribution pipe 200 is inserted into and supported by the incision groove 121, that is, each side where the first distribution port 211 and the second distribution port 221 face each other, Cutting portions 212 and 222 cut to height can be formed.

The cut portions 212 and 222 are formed in such a manner that the first and second distribution ports 211 and 221 are inserted further into the discharge port 120 to increase the contact area. The pipe 100 and the refrigerant distribution pipe 200 are more firmly engaged with each other so that they can more effectively bear the pressure inside the pipe.

Here, the refrigerant supply pipe 100 may have a cross section of the discharge port 120 that is wider than the cross section of the inlet 110, so that the refrigerant supplied through the inlet 110 can be smoothly moved .

The operation of the refrigerant pipe distribution structure having the above structure will be described below.

The refrigerant flowing through the inlet 110 is moved to the outlet 120 by the supply pressure and the outlet 120 is connected to a pair of refrigerant distributing pipes 210 composed of the first distributing member 210 and the second distributing member 220, The first discharge port 215 and the second discharge port 225 can be discharged in a state of being distributed.

Since the coolant supply pipe 100 and the coolant distribution pipe 200 are made of the same copper material, they can be easily processed so that the parts to be coupled with each other have a shape corresponding to each other, By ensuring a firm connection, it is possible to withstand the pressure inside the pipe efficiently.

In addition, since there is no need to provide a separate distributor for distributing the refrigerant, the manufacturing cost is reduced and the production cost can be reduced. Also, the portion to be welded is also divided into the refrigerant supply pipe 100 and the refrigerant supply pipe 100, And the first distributing member 210 and the second distributing member 220 are joined to the cutout groove 121 so as to be adjacent to each other. Therefore, welding can be performed more easily than when using the conventional distributor And the productivity is greatly improved as the number of welding is reduced by reducing the welding area.

The refrigerant supply pipe 100 and the refrigerant distribution pipe 200 are fitted and fixed in a state where the outer surface of the discharge port 120 is in contact with the inner surfaces of the first distribution port 211 and the second distribution port 221, By being welded in the fixed state as described above, the welded state can be maintained and the welded liquid can be prevented from penetrating into the pipes.

In addition, since the refrigerant distribution pipe 200 is joined to the outer surface of the refrigerant supply pipe 100 except for a portion where the pair of refrigerant distribution pipes 200 are joined, the refrigerant discharged through the discharge port 120 The first and second distribution ports 211 and 221 are connected to each other in a state of being supported by the cutout groove 121 so that the refrigerant can be branched. And the end portions of the first distribution port 211 and the second distribution port 221 are firmly joined to each other by the welding liquid permeated by the capillary phenomenon, The pressure acting on the junction W between the refrigerant and the refrigerant is minimized to prevent deformation and breakage due to the internal pressure of the refrigerant during the refrigerant movement, guy By out of the way on the joint by the welding while there is an effect that the heat exchange efficiency is enhanced.

That is, in the case where the refrigerant pipe is welded through the conventional distributor, since the joint surface of the distributor and the refrigerant pipe is located on the moving path (refrigerant path) where the refrigerant is distributed, the inner surface of the pipe is not uniform, And the pressure is increased due to the eddy phenomenon at the distributing portion and a large pressure directly acts on the connecting portion to break the joint portion between the distributor or the distributor and the refrigerant pipe there was.

However, in the refrigerant pipe distribution structure according to the first embodiment of the present invention, the ends of the first distribution member 210 and the second distribution member 220 are connected to the discharge port 120 The first distribution port 211, which is positioned in front of the end of the cut-out groove 121 to minimize the pressure acting on the joint W and which is connected to the cut- And the joining portion W of the second branch portion 221 are firmly joined with each other with a small area, so that the pressure inside the pipe can be prevented from increasing, and the refrigerant can be smoothly distributed and moved.

9, the joint portions W of the first and second distribution ports 211 and 221, which are joined together while being supported by the cutout groove 121 through the cutout portions 212 and 222, By the development, the welding liquid is uniformly penetrated to the end portions together with the surfaces facing each other, so that the welding can be more uniformly and firmly bonded.

In this way, the pressure acting on the joint W can be minimized, thereby preventing the deformation or breakage of the portion where the refrigerant is distributed from being more effectively prevented, thereby improving the reliability of the product as well as the defect rate.

Hereinafter, a refrigerant pipe distribution structure according to a second embodiment of the present invention will be described with reference to FIGS.

The refrigerant pipe distribution structure according to the second embodiment of the present invention is configured such that the refrigerant pipe 200 is inserted into the cutout groove 121 and the first and second distribution ports 211 and 221 are connected to each other Cuts 213 and 223 are formed on the opposite sides of the discharge port 120 so as to be fitted and fixed in the cutout groove 121. The cutout portions 213 and 223 are formed in respective inner regions where the coolant is distributed, 213 and 223 are formed by bending portions 214 and 224 which are bent obliquely to each other.

The cutouts 213 and 223 prevent the first distribution port 211 and the second distribution port 221 from moving arbitrarily at the time of welding due to the stable and firm fit of the first and second distribution ports 211 and 221 .

13, when the first and second distribution ports 211 and 221 are coupled to the discharge port 120, the bending portions 214 and 224 are connected to the first distribution port 211 So that the welding liquid flowing down to the inclined portions 214 and 224 so as to be spaced apart from each other along the interval between the first branch portion 221 and the second branch portion 221 forms the arc-shaped welding portion W.

Here, the arc-shaped joint W through the bent portions 214 and 224 allows the joint to be formed in a wider area, so that a firm connection state can be established, and the refrigerant introduced through the refrigerant supply pipe 100 The first and second distributor members 210 and 220 are prevented from flowing into the second distribution member 220 so that the refrigerant is smoothly distributed and moved so that heat exchange efficiency is increased. Thereby preventing erosion and extending service life.

The scope of the present invention is not limited to the above-described embodiments, but may be embodied in various forms of embodiments within the scope of the appended claims. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the appended claims.

100: refrigerant supply pipe 110: inlet
120: outlet 121: incision groove
200: refrigerant distribution pipe 210: first distribution member
211: first minute volleyball 212, 222:
213, 223: incision part 214, 224:
215: first discharge port 220: second distribution member
221: second minute volleyball 225: second outlet
W: joint area

Claims (5)

A discharge port 120 through which the refrigerant introduced through the inlet port 110 is formed and an incision groove 121 formed at both ends of the discharge port 120 opposite to each other, A refrigerant supply pipe (100) formed with the refrigerant pipe (100);
A pair of refrigerant distributing pipes 121 and 122 which are fitted into the cutout groove 121 so that the refrigerant introduced into the refrigerant supply pipe 100 is distributed and transported and discharged, And a pipe (200) connected to the refrigerant pipe. The method according to claim 1,
Wherein a cut portion (212) (222) cut at a predetermined height at an end portion is formed on a surface of the refrigerant distribution pipe (200) where the refrigerant distribution pipe (200) is inserted and supported by the cutout groove (121). The method according to claim 1,
A cutout portion 213 and a cutout portion 223 cut into a thickness corresponding to the discharge port 120 and fixed to the cutout 121 by being fixed to the surface of the refrigerant distribution pipe 200 which is inserted into the cutout 121, And bent portions 214 and 224 are formed between the cutouts 213 and 223 so that the side surfaces of the cutouts 214 and 223 are bent obliquely to the inner region of the refrigerant distribution pipe 200. [ rescue. The method according to claim 2 or 3,
Wherein a cross section of the discharge port (120) is formed wider than an end surface of the inlet (110) in the refrigerant supply pipe (100). 5. The method of claim 4,
The outlet 120 may be circular, oval, rectangular,

The refrigerant pipe connecting structure according to any one of the preceding claims,

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