KR20160145214A

KR20160145214A - A Accumulator Having a Structure of a Coupling Tap

Info

Publication number: KR20160145214A
Application number: KR1020150080973A
Authority: KR
Inventors: 김승희; 이상목; 이창우; 정익찬
Original assignee: 주식회사 화승알앤에이
Priority date: 2015-06-09
Filing date: 2015-06-09
Publication date: 2016-12-20

Abstract

[0001] The present invention relates to a silencer of a connection tab structure, and more particularly to a silencer of a connection tab structure, which is formed at a connection site on a connection tab capable of welding at low temperatures, thereby enabling easy connection of pipes and improving durability. A muffler of a connection tab structure applied to a refrigeration and air-conditioning apparatus includes a body (11) having a flow space formed therein; 1 and 2 connecting tubes 12a and 12b having a smaller diameter than the body 11; And the first and second connection tabs 13a and 13b of the first and second connection tubes 12a and 12b and the connection tabs 13a and 13b are the same as the pipes to which the connection tubes 12a and 12b are coupled Or the like, and the body 11 has a different material characteristic from the pipe, and a part of the connection tabs 13a and 13b is inserted and coupled into the connection tubes 12a and 12b .

Description

[0001] The present invention relates to a muffler having a connection tab structure,

[0001] The present invention relates to a silencer of a connection tab structure, and more particularly to a silencer of a connection tab structure, which is formed at a connection site on a connection tab capable of welding at low temperatures, thereby enabling easy connection of pipes and improving durability.

A muffler or an accumulator used in a refrigerator that uses evaporation heat due to the expansion of compressed air has a function of reducing noise due to a change in phase while preventing the inflow of refrigerant. Mufflers or accumulators can be applied to various refrigerating and air-conditioning products such as refrigerator, air conditioner, dehumidifier, water purifier or air purifier to which the refrigeration or refrigeration principle is applied, and mufflers having various structures are known in this field.

Japanese Patent Laid-Open Publication No. 10-1998-0014679 discloses a refrigerator having both ends connected to a refrigerant circulation path of a refrigerator and a central portion having a diameter gradually increasing from the central portion thereof, The silencer for a refrigerator according to claim 1, wherein the muffler has an annular engaging jaw which is continuous along the inner wall surface of the muffler main body in order to block liquid refrigerant moving along the inner wall surface of the muffler main body .

Japanese Patent Application Laid-Open No. 10-2008-0103278 discloses a silencer provided in a refrigerant pipe connecting a compressor and a condenser. In this silencer, the oil introduced together with the refrigerant does not accumulate continuously, The present invention relates to a silencer for a refrigerant pipe.

The muffler is connected to a metal pipe of the system which is connected to the compressor or the condenser. The muffler can be made of copper or steel so as to be durable while being connected to such a pipe. In case of copper or steel material, it may be electrodeposited on the outer surface to prevent corrosion. The silencer having such a structure is disadvantageous in that it has a low durability and a high manufacturing cost and a low noise effect. The above-mentioned prior art has such disadvantages.

The present invention has been made to solve the problems of the prior art and has the following purpose.

Prior Art 1: Patent Publication No. 10-1998-0187199 (published by Samsung Electronics Co., Ltd. on May 25, 1998) Silencer for refrigerator Prior Art 2: Patent Publication No. 10-2008-0103278 (published by LG Electronics Co., Ltd. on Nov. 27, 2008) Silencer and refrigerator containing the same

It is an object of the present invention to provide a silencer of a connection tab structure having a connection tab having the same or similar coupling characteristics as a pipe to be connected and made of a material having a corrosion resistance.

According to a preferred embodiment of the present invention, a muffler of a connection tab structure applied to a refrigerating and air-conditioning apparatus comprises: a body having a flow space formed therein; 1 and 2 connecting tubes having a smaller diameter than the body; And the first and second connection tabs of the first and second connection tubes, wherein the connection tab is made of a metal material having the same or similar material characteristics as the pipe to which the connection tube is coupled, And a part of the connection tab is inserted and coupled to the inside of the connection tube.

According to another preferred embodiment of the present invention, the connection tab comprises a joint rim which is in contact with the pipe and an insertion portion which is smaller in thickness than the rim and which is joined with the inner surface of the connection tube.

According to another preferred embodiment of the present invention, the connection tab is made of copper and the body is made of stainless steel.

The muffler according to the invention makes the body to be designed on the basis of characteristics such as corrosion resistance or thermal conductivity by making the connection tab the same or similar material as the pipe to which it is connected. This not only improves workability and durability of the silencer but also reduces the manufacturing and maintenance costs of the silencer.

1 shows an embodiment of a muffler according to the present invention.
2A shows an embodiment in which the muffler according to the present invention is connected to a pipe.
Figure 2b illustrates another embodiment of a connection tab according to the present invention.
FIG. 3 shows an embodiment of a manufacturing process of a muffler according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the accompanying drawings, but the present invention is not limited thereto. In the following description, components having the same reference numerals in different drawings have similar functions, so that they will not be described repeatedly unless necessary for an understanding of the invention, and the known components will be briefly described or omitted. However, It should not be understood as being excluded from the embodiment of Fig.

1 shows an embodiment of a muffler 10 according to the present invention.

1, a silencer 10 according to the present invention includes a body 11 having a flow space formed therein; 1 and 2 connecting tubes 12a and 12b having a smaller diameter than the body 11; And the first and second connection tabs 13a and 13b of the first and second connection tubes 12a and 12b and the connection tabs 13a and 13b are the same as the pipes to which the connection tubes 12a and 12b are coupled Or the like, and the body 11 has a different material characteristic from the pipe, and a part of the connection tabs 13a and 13b is inserted and coupled into the connection tubes 12a and 12b .

The silencer 10 according to the present invention may be connected to a pipe through which the refrigerant is moved in various devices having a freezing or refrigerating function to reduce the inflow of the refrigerant or reduce the noise. For example, the silencer 10 according to the present invention can be applied to devices such as a refrigerator, an air conditioner, a dehumidifier, a water purifier or an air purifier, but is not limited thereto.

The body 11 can be in the form of a hollow cylinder and the one and two connecting tubes 12a and 12b can also have a hollow cylinder shape. The body 11 and the connecting tubes 12a and 12b may be connected to allow movement of the fluid, and may be made of a material such as stainless steel, for example. The body 11 and the connection tubes 12a and 12b may be integrally formed so that a transition region may be formed at a connection portion between the body 11 and the connection tubes 12a and 12b.

The connection tabs 13a and 13b can be coupled to the ends of the connection tubes 12a and 12b. The connection tabs 13a and 13b may be made of a material having different material properties from the body 11 or the connection tubes 12a and 12b. For example, the connection tabs 13a and 13b may be made of a material such as copper, bronze or brass, or may be made of a material having a material characteristic similar to a pipe to which the connection tubes 12a and 12b are connected. As used herein, the material properties may include properties that are readily combined by means such as welding or bonding, ranges of melting or softening points, thermal conductivity or electrical conductivity, density or specific heat.

The inside of the connection tabs 13a and 13b may have a cylindrical shape and a rim may be formed at the end of the connection tabs 13a and 13b. The portion excluding the rim can be inserted into the connecting tubes 12a and 12b and be firmly coupled to the connecting tubes 12a and 12b. The connection tabs 13a, 13b can be coupled to the connection tubes 12a, 12b through means such as, for example, high frequency welding or furnace welding. The connection tabs 13a and 13b and the connection tubes 12a and 12b can be firmly coupled in various ways, and the present invention is not limited to the embodiments shown. The rims of the connection tabs 13a and 13b can be brought into contact with the end portions of the connection tubes 12a and 12b and can be made to have the same height as the connection tubes 12a and 12b or a large height.

The pipe connected to the silencer 10 is inserted into the connection tabs 13a and 13b and can be connected to the connection tabs 13a and 13b by a method such as high frequency welding or furnace welding. The pipe and the connection tabs 13a and 13b can be easily combined due to the same or similar material characteristics and the body 11 and the connection tubes 12a and 12b are made of a material having high properties for the external environment or refrigerant . Accordingly, the pipe and the muffler 10 can be firmly coupled with each other, and the durability of the muffler 10 can be improved.

FIG. 2A illustrates an embodiment in which the silencer 10 according to the present invention is connected to a pipe.

2A shows a cross section of a body 11, a connecting tube 12a and a connecting tab 13a, and a cross section of a pipe 21 connected to the muffler 10.

2A, the connection tabs 13a are joined to the inner surfaces of the connection tubes 12a and 12b with a thickness smaller than that of the junction edge 131 and the junction edge 131 that are in contact with the pipe 21 And an insertion portion 132. One connecting tab 13a and connecting tube 12a are shown in the embodiment shown in Figure 2a and the other connecting tab 13b and connecting tube 12b can be made in the same or similar structure.

The pipe 21 may have the same thickness as the joining rim 131 and the end of the connecting tube 12a may be made to have a step corresponding to the thickness of the inserting portion 132. [ Due to such a structure, when the pipe 21 is coupled to the connection tab 13a, the inner surfaces of the pipe 21, the connection tab 13a, and the connection tube 12a may be curved surfaces having no step. As a result, the fluid or the refrigerant, which is transferred from the pipe 21 to the muffler, forms a natural strip, thereby preventing the generation of noise due to the formation of the connection portion. The connecting tabs 13a and the connecting tubes 12a can be joined in advance in the manner of high frequency welding or furnace welding and the pipes 21 and the connecting tabs 13a can likewise be welded or otherwise combined.

It is advantageous that the inner surface of the pipe 21 through which the fluid flows and the inner surface of the silencer 10 be curved so as to be smoothly connected, but it is advantageous that the outer surface maintains a firm coupling. For example, as shown in the enlarged portion (A) of FIG. 2, an induction guide 133 may be formed at the end of the connection tab 13a. The induction guide 133 may be formed at the end of the connection tab 13a, for example, in the shape of a ring protruding outward while being thinner than the thickness of the pipe. The induction guide 133 stably fixes the pipe 21 and the connection tab 13a in the process of coupling the pipe 21 and the connection tab 13a. The pipe 21 may be temporarily coupled to the guide 133 in a forced fit or interference fit manner and then permanently joined in a manner such as welding. The induction guide 133 may be selectively formed, and when the induction guide 133 is formed, the thickness of the joint edge 131 may be larger than the thickness of the pipe.

FIG. 2B shows another embodiment of the connection tab 13a according to the present invention.

2B, the connection tab 13a includes an insertion portion 132 inserted and fixed in the connection tube 12a and an insertion portion 132 formed at an end portion of the insertion portion 132, And a connecting edge 131 having a relatively large diameter as compared with the connecting edge 131. The connection tab 13a can be fitted in the connection tube 12a by a forced insertion method. Strips may be formed along the outer circumferential surface of the insertion portion 132 as required and the depth of the stripes may be adjusted by connecting the connection tabs 12a and the pipes 21 by the high- As will be described in greater detail below. The depth of the stripe may be set so as to be equal to the thickness to be softened or melted by the applied heat. The connection tab 13a is inserted into the connection tube 12a by a forced insertion method and can be coupled to the connection tube 12a by an appropriate welding method. The joining rim 131 may be made to have the same height as the connecting tube 12a in a state of being coupled to the connecting tab 13a.

2B, the joining edge 131 may have a ring shape having the same thickness as that of the pipe 21, and the insertion portion 132 may have a thickness smaller than the thickness of the connection tube 12a And can be extended. And the end portion of the connecting tube 12a may be made to have a step in a portion corresponding to the extending length of the insertion portion 132 in the longitudinal direction. In such a structure, the connection tab 13a, the pipe 21, and the connection tube 12a may be in the form of a circular tube having the same or similar diameter while being coupled to each other. And the noise that can be generated due to the change in the inner diameter is reduced as compared with the embodiment shown in Fig. 2B (a). The muffler according to the present invention can preferably be made in the structure shown in (b) of Fig. 2b. However, the embodiment shown in Fig. 2 (b) can be made if the thicknesses of the pipe 21 and the connecting tube 12a may be different from each other and the inner diameter can not be made the same in the coupled state. In such a case, the thickness of the insertion portion 132 may be reduced along the extending direction, thereby reducing noise generation.

As described above, the pipe 21 can be made of the same or similar material as the connecting tabs and can be coupled to the connecting tube 12a through the connecting tabs 13a in a variety of ways such as welding, have.

FIG. 3 shows an embodiment of a manufacturing process of a muffler according to the present invention.

Referring to FIG. 3, a body material may be selected for manufacturing the silencer (P31). The body material may be, for example, a material such as stainless steel (SUS) and may be determined based on the level of rust generation, ease of molding, thermal expansion level or thermal conductivity. Stainless steel may comprise from 15 to 22 wt% chromium and from 5 to 10 wt% nickel, further comprising from 0.10 to 0.18 wt% carbon, up to 0.15 wt% silicon, up to 1.0 wt% magnesium, Or less phosphorus or 0.03 wt% or less sulfur. In order to further improve the corrosion resistance, processability and weldability, it may contain 0.3 to 0.7 wt% of molybdenum, 0.5 to 2.5 wt% of titanium, or 0.1 to 0.5 wt% of niobium (Nb). The amount of carbon can be reduced to an appropriate level depending on the amount of titanium added as needed. When the material for the body is selected (P31), the connection tab can be selected (P32). The connection tab may be made of the same or similar material as the pipe connected to the silencer. As described above, the connection tabs can be formed of a joint edge and an insert part having different thicknesses. As required, stripes may be formed on the surface of the joining rim that is in contact with the pipe or on the outer circumferential surface of the joining portion, but this is not necessarily required. The thickness of the connection tab can be made equal or similar to the thickness of the pipe. When the connection tab is selected, the length to be inserted into the connection tube in the connection tab can be determined (P33). The insertion length can be appropriately determined according to the binding stability of the connection tab and the stream characteristics of the fluid. And the connection tabs can be coupled to the connection tubes in a forced insertion manner. And the connection tab can be permanently connected to the connection tube (P34). Permanent bonding may be accomplished in a manner such as, for example, high frequency welding or furnace welding, but is not limited thereto, and may be accomplished in a variety of ways using the welding characteristics of the connection tabs. When the connection tab is coupled to the body, the inner surface of the connection tab can be finished by proper grinding. And a pipe connected to the compressor or inflator may be coupled to the joining rim of the connection tab (P35). The combination of the pipe and the connection tab can be made by the melting characteristics of the material, such as high frequency welding or furnace welding, in the same or similar manner as the connection of the connection tab and the connection tube.

The muffler according to the present invention can be manufactured in various ways and the present invention is not limited to the embodiments shown.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention . The invention is not limited by these variations and modifications, but is limited only by the claims appended hereto.

10: silencer 11: body
12a, 12b: 1, 2 connection tubes 13a, 13b: first and second connection tabs
21: Pipe 131: Joint Border
132: insertion portion 133: guide guide

Claims

In a silencer applied to a refrigerating and air-conditioning apparatus,
A body 11 having a flow space formed therein;
1 and 2 connecting tubes 12a and 12b having a smaller diameter than the body 11; And
And first and second connection tabs (13a, 13b) of the first and second connection tubes (12a, 12b)
The connection tabs 13a and 13b are made of a metal material having the same or similar material characteristics as those of the pipes to which the connection tubes 12a and 12b are coupled. The body 11 has different material properties from the pipe, (13a, 13b) are inserted into the connecting tubes (12a, 12b).

The connector according to claim 1, wherein the connection tabs (13a, 13b) have a thickness smaller than the junction edge (131) and the junction edge (131) that are in contact with the pipe (21) And an inserting portion (132) formed on the inner surface of the inserting portion.

The muffler according to claim 1, wherein the connection tabs (13a, 13b) are made of copper and the body (11) is made of stainless steel.