KR100740699B1 - Header pipe for heat exchanger - Google Patents

Abstract

The present invention relates to a header pipe for a heat exchanger, and a header pipe for inserting a plurality of heat dissipation tubes is separately processed by inserting the plate to which the heat dissipation tube is inserted and the cover coupled to each other separately, and then joining and brazing the heterojunction. The purpose is to reduce the failure of the header pipe by combining the two base materials through. The present invention configured for this purpose is installed between a plurality of heat dissipation tube and heat dissipation tube through which the refrigerant flowing through the inside of the header pipe is installed at regular intervals between the upper and lower header pipes and the upper and lower header pipes through which the refrigerant flows. In the heat exchanger made of heat dissipation fins, the header pipe is a fitting piece cut at regular intervals and bent upwards or downwards to each of the first joining pieces formed in a plane on both ends of the body of a predetermined length and the first joining pieces formed on both sides of the body. And a plate formed of a plurality of tube coupling holes formed through the body at a predetermined interval so that the top and bottom ends of the heat dissipation tube are inserted and coupled. A fitting groove and a body in which second joining pieces corresponding to the first joining pieces formed at both ends of the plate are formed at both ends of the body, but penetrating at regular intervals to each of the second joining pieces formed at both sides of the body, thereby fitting the fitting pieces. A cover formed with a plurality of partition grooves formed therethrough at regular intervals on the cover; And the plate fitting pieces of the plate are fitted into the fitting grooves of the cover and are formed in the form of inner end faces of the plate and the cover, which are coupled through punching, and are installed in the inner space formed by the plate and the cover through respective partition grooves. The flow consists of partition walls that allow the heat dissipation tube to flow in a zigzag.

Air conditioners, air conditioners, heat exchangers, corrugated fins, heat sink fins, header pipes

Description

Header pipe for heat exchanger

1 is a perspective view showing a general heat exchanger.

Figure 2 is a perspective view showing a first embodiment of a header pipe for a general heat exchanger.

Figure 3 is a perspective view showing a second embodiment of a header pipe for a general heat exchanger.

Figure 4 is an exploded perspective view showing a header pipe for a heat exchanger according to the present invention.

5 is a perspective view showing a header pipe for a heat exchanger according to the present invention.

6 is a cross-sectional view showing a header pipe for a heat exchanger according to the present invention.

Figure 7 is a cross-sectional view showing the installation state of the heat exchanger header pipe according to the present invention.

[Description of Symbols for Main Parts of Drawing]

100. Heat exchanger 120. Heat dissipation tube

130. Heat sink fin 200. Header pipe

210.plate 220.cover

230. Bulkhead

The present invention relates to a header pipe for a heat exchanger, and more particularly, a header pipe for inserting a plurality of heat dissipation tubes is processed by inserting a plate into which a heat dissipation tube is inserted and a cover coupled to each other to form a heterojunction brazing. The present invention relates to a heat exchanger header pipe that can reduce the defect rate during the manufacture of the header pipe by bonding through.

In general, a heat exchanger refers to a device that performs heat exchange between two fluids having different temperatures and separated by solid walls. In the narrow sense, a heat exchanger is generally used between two process flows without phase change. Refers to a device for exchanging heat, and broadly includes a cooler, a condenser, and the like. Such heat exchangers are widely used for heating, air conditioning, power generation, cooling, and waste heat recovery.

On the other hand, the types of heat exchanger, first of all, are classified according to the geometrical form of shell & tube heat exchanger, double pipe type heat exchanger, plate type heat exchanger, and air cooler. , Heated Heater and Coil Type Heat Exchanger, Heat Exchanger, Cooler, Condenser, Reboiler, Evaporator , Preheater and Two Phase Flow Heat Exchanger. The following shows a typical cold half heat exchanger.

1 is a perspective view showing a general heat exchanger, FIG. 2 is a perspective view showing a first embodiment of a header pipe for a general heat exchanger, and FIG. 3 is a perspective view showing a second embodiment of a header pipe for a general heat exchanger.

Referring to the configuration of the general heat exchanger 10 as shown in Figure 1 is installed at regular intervals between the upper and lower header pipe 20, the upper and lower header pipe 20 through which the refrigerant flows to the inside of the header pipe 20 Refrigerant inlet and refrigerant discharge pipes in which the refrigerant is introduced and discharged into the heat dissipation fins 40 and the header pipe 20 installed between the plurality of heat dissipation tubes 30 and the heat dissipation tubes 30 through which the refrigerant flows. 50a, 50b).

In the heat exchanger 10 configured as described above, the refrigerant introduced from the refrigerant inlet pipe 50a flows into the upper header pipe 20 and sequentially passes through the heat dissipation tube 30 through the zigzag, and then the refrigerant discharge pipe 50b. Is discharged through). At this time, heat is transferred by the heat to the heat radiation fins 30 in the process of the refrigerant passing through the heat radiation tube 30.

Meanwhile, in the configuration of the general heat exchanger 10 as described above, the header pipes 20 and 20a are formed in a circular shape as shown in FIG. 2 or in a “D” shape as shown in FIG. Are arranged. As such, tube joint holes 22 and 22a are formed to insert and fix the heat dissipation tube 30 on the same positions of the opposite surfaces of the header pipes 20 and 20a arranged at a predetermined distance up and down. The upper and lower ends of the heat dissipation tube 30 are inserted and coupled through 22a).

However, since the heat exchanger header pipe according to the general technique configured as described above is manufactured by using an integral clad material, there is a problem in that the manufacturing cost is high, and such an integral header pipe structure has a header pipe processing. There is a problem in that it is impossible to check the burrs generated in the processed part at the time and thus cannot detect a defect in advance.

On the other hand, if a burr is formed in the processed portion during the header pipe processing, the flow of the refrigerant is inhibited, and if the burr is eliminated by the flow of the refrigerant, the compressor of the compressor You have a problem that may cause a malfunction.

The present invention has been devised to solve the problems of the prior art, the header pipe for inserting a plurality of heat dissipation tube and the plate to which the heat dissipation tube is inserted and the cover coupled to each other by separately processing the fitting groove and the fitting It is an object of the present invention to provide a header pipe for a heat exchanger that can reduce the defect rate of the header pipe during manufacture of the header pipe by combining the two base materials by a heterojunction brazing method (brazing) after fitting through the coupling piece.

Another object of the present invention is to manufacture a prefabricated header pipe consisting of a cradle plate and an aluminum cover to reduce the manufacturing cost compared to the header pipe made of a conventional integral clad material.

In addition, the technique according to the present invention by processing the heat exchanger header pipe into two pieces of the cradle plate and aluminum cover, after the processing of the cradle plate and the aluminum cover, to visualize the jagged portion (Burr) of the processed portion It is possible to reduce the prior failure rate by making it possible to check.

The present invention configured to achieve the above object is as follows. That is, the heat exchanger header pipe according to the present invention is installed at a predetermined interval between the upper and lower header pipes and the upper and lower header pipes through which refrigerant flows, and is installed between a plurality of heat dissipation tubes and heat dissipation tubes through which refrigerant flowing through the header pipe flows. In the heat exchanger made of heat dissipation fins to radiate heat, the header pipe is cut at regular intervals on each of the first joining pieces formed in a plane on both ends of the body of a predetermined length and the first joining pieces formed on both sides of the body and bent upward or downward. Plates made of fitting coupling pieces and the body is formed through a predetermined interval through a plurality of tube coupling holes each of which is inserted and coupled to the top and bottom of the heat dissipation tube; A fitting groove and a body in which second joining pieces corresponding to the first joining pieces formed at both ends of the plate are formed at both ends of the body, but penetrating at regular intervals to each of the second joining pieces formed at both sides of the body, thereby fitting the fitting pieces. A cover formed with a plurality of partition grooves formed therethrough at regular intervals on the cover; And the plate fitting pieces of the plate are fitted into the fitting grooves of the cover and are formed in the form of inner end faces of the plate and the cover, which are coupled through punching, and are installed in the inner space formed by the plate and the cover through respective partition grooves. The flow consists of partition walls that allow the heat dissipation tube to flow in a zigzag.

The heat exchanger header pipe of the present invention configured as described above has a molten insert applied on the opposite surfaces of the first and second joining pieces and the outer circumference of the partition wall when the plate and the cover are coupled to each other, thereby heating the furnace. It is produced through the joining of the first and second joining pieces and the joining of the partition wall and the inner space surface.

On the other hand, in the configuration as described above, the plate is molded through the press working, the cover is molded through the extrusion and press working, the partition wall may be molded through the press working. The plate and the partition wall may be made of a crad material, and the cover may be made of aluminum.

Hereinafter, a heat exchanger header pipe according to a preferred embodiment of the present invention will be described in detail.

Figure 4 is an exploded perspective view showing a heat exchanger header pipe according to the present invention, Figure 5 is a perspective view showing a heat exchanger header pipe according to the present invention, Figure 6 is a sectional view showing a heat exchanger header pipe according to the present invention, Figure 7 is Sectional drawing which showed the installation state of the heat exchanger header pipe which concerns on this invention.

As shown in FIGS. 4 to 7, the header pipe 200 according to the present invention includes a first bonding piece 214 and a body formed on both sides of the first joining piece 214 formed on both ends of the body 212 of a predetermined length in plan view. 1 is joined to each of the joining pieces 214 at regular intervals and formed through the fitting piece 216 and the body 212, which are bent upwards or downwards, at regular intervals so that the top and bottom portions of the heat dissipation tube 120 are inserted and coupled. Plate 210 consisting of a plurality of tube coupling holes 218, the second bonding piece 224 corresponding to the first bonding piece 214 formed on both ends of the plate 210 is formed at both ends of the body 222 But through the second coupling piece 224 formed on both sides of the body 222 formed at a predetermined interval through the fitting coupling groove 226 and the fitting coupling 216 is formed through the predetermined interval through the body 222 The fitting piece 216 of the cover 220 and the plate 210 through which a plurality of partition grooves 228 are formed. Is fitted into the fitting coupling groove 226 of the cover 220 is formed in the form of an inner longitudinal cross-section of the plate 210 and the cover 220 are coupled through punching plate 210 through each partition groove 228 ) And the cover 220 is formed in the inner space formed by the partition 230 to allow the flow of the refrigerant to flow in the heat radiation tube 120 in a zigzag.

The heat exchanger header pipe 200 according to the present invention configured as described above, the fitting piece 216 of the plate 210 in a state in which the partition wall 230 is coupled to the inside of the cover 220 through the partition groove 228. It is inserted into the fitting groove 226 of the cover 220 to punch. At this time, the opposite surface of the first joining piece 214 and the second joining piece 224 and the outer periphery of the partition wall 230, the carbon steel is finely mixed with brass powder and silver additive powder to clean the oxide remover flux (Flux) After applying a melt insert (not shown) such as carbon steel, the first joining piece 214 and the second joining piece 224 are joined by heating using a furnace, while the plate 210 is joined. The partition wall 230 is bonded to the space surface formed by the cover 220.

As described above, the melting insert is heated and melted to bond the first joining piece 214 and the second joining piece 224 of the plate 210 and the cover 220 which are the base metals to each other, called brazing. Brazing is one of the welding methods for joining a base material using heat and a melt insert and is distinguished from soldering based on 450 degrees Celsius. That is, brazing is commonly referred to as joining a base metal by applying heat below the melting point of the base material using a filler material having a melting point temperature of 450 degrees Celsius or more. In addition, a welding method using a filler metal is welding. The difference between welding and brazing, which is commonly called welding, is whether the base material melts or melts. Because of this feature, brazing has a big advantage over welding, which means that there is little deformation or residual stress of the base material because the base material is not melted and welded only with the filler metal.

On the other hand, the header pipe 200 configured as described above is arranged in a predetermined distance of the upper and lower so that the tube coupling holes 218 are opposed to each other, the heat dissipation tube 120 between the header pipe 200 arranged at a predetermined distance of the upper and lower Inserted into each of the tube coupling hole 218 of the plate 210 forming the upper and lower ends of the upper header pipe 200 and the tube coupling hole 218 of the plate 210 forming the upper portion of the lower header pipe 200. Combined.

Then, as described above, each of the tube coupling holes 218 of the plate 210 forming the lower portion of the upper header pipe 200 and the tube coupling holes 218 of the plate 210 forming the upper portion of the lower header pipe 200, respectively. Between the top and bottom of the heat dissipation tube 120 is inserted and coupled to the heat dissipation fin 130 for dissipating heat transferred from the heat dissipation tube 120 is installed.

Hereinafter, the heat exchanger header pipe 200 according to the present invention will be described in detail. First, the plate 210 is configured to couple the heat dissipation tube 120 of the two pieces constituting the header pipe 200, the plate 210 is a body made of a predetermined length as shown in Figures 4 to 6 212, the first joining piece 214 formed in a structure that is bent in two directions in the upper or lower portion at both ends of the body 212 and outward again, and the first joining piece formed on both sides of the body 212 ( 214) a plurality of tubes which are cut at regular intervals and are formed through the fitting piece 216 and the body 212, which are bent upward or downward, at regular intervals and are respectively inserted into the upper and lower ends of the heat dissipation tube 120. It consists of a coupling hole (218).

On the other hand, the plate 210 is configured as described above is made of a material of the clad (clade) material is molded through the press working. The plate 210 formed as described above may be in the form of an opening downward, as shown in FIGS. 4 to 6, or may be formed in an arc shape having a curvature close to that of the flat plate.

The cover 220 is for fixing and fixing the partition wall 230, which will be described later, of the two pieces constituting the header pipe 200 in the space combined with the plate 210, and the cover 220 is illustrated in FIGS. 4 to 6. As shown, the body 222 having a predetermined length, the second bonding piece 224 formed in a structure that is bent in two directions in the outward direction again in a state bent in one direction of the lower or upper portion at both ends of the body 222, the body 222 A plurality of partition grooves formed through each of the second joining pieces 224 formed at both sides at a predetermined interval to penetrate the fitting coupling groove 226 and the body 222 at regular intervals. 228.

The cover 220 configured as described above is made of an aluminum material, but is molded through press processing while extruding the molten aluminum. The cover 220 formed as described above may be formed in the shape of a rectangle or a semicircle with an upper opening as shown in FIGS. 4 to 6.

The partition wall 230 blocks the flow of the refrigerant flowing through the header pipe 200 so that the refrigerant flowing in the fluid flow hole 122 inside the heat dissipation tube 120 may flow in a plurality of heat dissipation tubes 120 in a zigzag manner. In order to be able to do this, the partition wall 230 is formed in the form of an inner longitudinal section formed through the coupling of the plate 210 and the cover 220, but through each partition groove 228, the plate 210 and the cover ( 220 is installed in the inner space formed. At this time, the partition wall 230 is made of a clad (clade) material but is molded through the press working.

The header pipe 200 according to the present invention having the above-described configuration inserts and fixes one end of the partition wall 230 in which the molten insert is applied on the outer circumferential surface of each of the partition grooves 228 of the cover 220. , By applying a melt insert material on the first and second joining pieces 214 and 224 facing the plate 210 and the cover 220 to cover the fitting piece 216 of the plate 210 with the cover 220. It is inserted into the fitting groove 226 to punch. In this manner, the plate 210 and the cover 220 are bonded to each other on the outer periphery of the first joining piece 214, the second joining piece 224, and the wall 230 through heating using a furnace. The molten insertion material is melted to allow the first joining piece 214 and the second joining piece 224 to be joined, while the partition wall 230 is joined to the space surface formed by the plate 210 and the cover 220.

The header pipe 200 configured as described above is arranged at a predetermined distance up and down in the direction in which the tube coupling holes 218 are opposed to each other when arranged.

On the other hand, look at the arrangement position of the partition wall 230 as follows. First, it is assumed that the refrigerant flows from the right side of the upper header pipe 200 as illustrated in FIG. 7. The refrigerant introduced from the upper header pipe 200 flows to the first heat dissipation tube 120. Because it must be introduced, it must be blocked between the first heat dissipation tube 120 and the second heat dissipation tube 120. Then, the refrigerant introduced into the first heat dissipation tube 120 flows to the lower side of the heat dissipation tube 120 and flows into the lower header pipe 200 to flow again from the bottom of the second heat dissipation tube 120 to the top. In order to do this, the partition wall 230 formed in the lower header pipe 220 should block between the second and third heat dissipation tubes 120. As such, the partition wall 230 has the refrigerant flowing from the top to the bottom of the first heat dissipation tube 120, from the bottom to the top of the second heat dissipation tube 120, and from the top to the bottom of the third heat dissipation tube 120 again. It is installed in a position that allows it to flow in repetitive zigzag.

As described above, the heat exchanger header pipe 200 according to the present invention may not only improve durability, but also increase the contact area with the heat dissipation tube 120 to reduce the occurrence of leaks, and also improve the assembly workability. The manufacturing cost can be reduced.

The present invention is not limited to the above embodiments, and various modifications can be made within the scope of the technical idea of the present invention.

As described above, according to the present invention, the header pipe for inserting a plurality of heat dissipation tubes is separately processed by fitting the plate through which the heat dissipation tube is inserted and the cover coupled with the plate through the fitting groove and the fitting coupling piece, respectively. By combining the two base materials by the bonding brazing method (brazing) there is an effect that can reduce the failure rate of the header pipe during the manufacture of the header pipe.

In addition, the present invention has an effect of reducing the manufacturing cost compared to the header pipe made of a conventional integral clad material by manufacturing a prefabricated header pipe made of a cradle plate and an aluminum cover.

In addition, the technique according to the present invention by processing the heat exchanger header pipe into two pieces of the cradle plate and aluminum cover, after the processing of the cradle plate and the aluminum cover, to visualize the jagged portion (Burr) of the processed portion It can be confirmed by the effect of reducing the prior failure rate.

Claims (3)

The heat exchanger is composed of heat dissipation fins disposed between the heat dissipation tubes and the heat dissipation tubes installed at regular intervals between the upper and lower header pipes through which the refrigerant flows, and the upper and lower header pipes. In The header pipe has a first joining piece formed in a planar shape on both ends of the body of a predetermined length, a fitting piece cut in a predetermined interval on each of the first joining pieces formed on both sides of the body and bent upwardly or downwardly, and fixed to the body. A plate formed of a plurality of tube coupling holes formed at intervals through which upper and lower ends of the heat dissipation tube are inserted and coupled; A second joining piece corresponding to the first joining piece formed at both ends of the plate is formed at both ends of the body, but is formed through each of the second joining pieces formed at both sides of the body at regular intervals so that the fitting piece is fitted. A cover formed with a plurality of partition grooves formed therethrough through the groove and the body at a predetermined interval; And An inner space of the plate and the second cover formed through the respective partition wall grooves is formed in the form of an inner end face of the plate and the cover, which are fitted through the punching by fitting the fitting piece of the plate into the fitting groove of the cover. Is installed in the partition is made of a partition wall to allow the flow of the refrigerant flow in the zig-zag, When the plate and the cover are joined, the molten insert is applied on the opposite surfaces of the first and second joining pieces and the outer periphery of the partition wall to join the first and second joining pieces and heat the partition wall and the inside by heating using a furnace. Header pipe for heat exchangers, characterized in that produced through the joining of the space surface. The heat exchanger header pipe of claim 1, wherein the plate is formed by pressing, the cover is formed by extrusion and pressing, and the partition wall is formed by pressing. The heat exchanger header pipe according to claim 1 or 2, wherein the plate and the partition wall are made of a crad material, and the cover is made of aluminum.

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