KR100833484B1 - Heat exchanger having integrated receiver drier and the fabrication method thereof - Google Patents

Abstract

Disclosed are a heat exchanger having an integrated receiver and a method of manufacturing the same. The present invention relates to a heat exchanger and a receiver that is brazed integrally with the heat exchanger, the receiver being connected to any one of the header pipes by at least one or more connecting pipes, and a receiver tank having a locking jaw formed on an inner circumferential surface thereof; Upper and lower end caps each of which seals the lower end; and a desiccant assembly inserted into the receiver tank; and a filter assembly disposed below the desiccant assembly. It is brazed jointly with the heat exchanger in each installed state, and the receiver is integrally assembled with the heat exchanger in a state where the desiccant assembly and the filter assembly are inserted into the receiver tank, thereby greatly simplifying the manufacturing process. Accordingly, manufacturing costs can also be reduced.

Description

Heat exchanger having integrated receiver drier and the fabrication method

1 is a cross-sectional view showing a conventional heat exchanger,

2 is a perspective view showing a heat exchanger according to an embodiment of the present invention;

3 is an exploded perspective view showing a part of the receiver of FIG. 2;

4 is a cross-sectional view of the receiver of FIG.

<Brief description of symbols for the main parts of the drawings>

21,22 ... Header pipe 23 ... Tube

24 ... heat dissipation 200

210.Receiver tank 211

221,222 Inlet pipe 223 Outlet pipe

231 ... Upper end cap 232 ... Lower end cap

240 Desiccant Assembly 241 Desiccant Network

Desiccant 250 Filter assembly

251 top cap 252 bottom cap

253 ... filter

The present invention relates to a heat exchanger, and more particularly, to a heat exchanger and a method of manufacturing the same having an integrated receiver which simplifies the manufacturing process by inserting a desiccant and a filter into the receiver and brazing them integrally with the heat exchanger. .

In general, a condenser in an air conditioner is a heat exchanger that converts a heat exchange medium compressed at high temperature and high pressure from a compressor into heat exchange medium with lower ambient air and converts it into a liquid heat exchange medium. The receiver drier is installed between the condenser and the expansion valve to temporarily store the liquid heat exchange medium flowing from the condenser so that the required amount can be supplied to the evaporator according to the cooling load, and at the same time, the expansion valve provides a complete liquid heat exchange medium. It supplies and absorbs the heat exchange medium of the non-condensed gas state from the condenser.

In recent years, the receiver is located on the flow path, not the outlet side of the condenser, so that the liquid zone of the heat exchange medium is supplied until it is developed in the receiver, and the lower side of the receiver is used as a subcooling zone where the liquid is cooled. To keep it.

As shown in FIG. 1, the conventional heat exchanger 10 includes a plurality of first and second header pipes 11 and 12 disposed opposite to each other, and both ends of the header pipes 11 and 12. A plurality of tubes 13 in communication with each other, a heat dissipation fin 14 interposed on an outer surface of the tube 13, and inlet and outlet pipes 15 and 16 installed in the first header pipe 11. And a baffle 17 installed in the header pipes 11 and 12 and a receiver 100 in communication with the second header pipe 12.

The receiver 100 includes a receiver tank 110 in communication with the second header pipe 12, upper and lower end caps 121 and 122 sealing the upper and lower ends of the receiver tank 110, and the receiver. A desiccant assembly 120 having a desiccant installed inside the tank 110 and a filter 130 are provided.

The heat exchanger 10 having such a structure exchanges heat with the lower air outside while the high temperature and high pressure heat exchange medium introduced through the inlet pipe 15 flows in the tube 13 in a meandering manner by the baffle 17 which is a partition means. Then it is discharged through the outlet pipe 16 via the receiver 100.

Looking briefly at the manufacturing process of the heat exchanger 10 in which the receiver 100 having such a configuration is integrated, the brazing process may be performed in a state in which the receiver 100 is preassembled to the heat exchanger 10. do. After the brazing bonding, the desiccant assembly 120 and the filter 130 are inserted into the receiver tank 100. Next, in order to seal the receiver tank 100, the lower end cap 122 is coupled to the lower end thereof to complete the assembly.

By the way, the following problems exist conventionally.

The heat exchanger (10) is brazed by coupling the receiver (100) to the second header pipe (12), and then inserts the desiccant assembly (120) and filter (130) into the receiver tank (110), Since the end cap 122 undergoes a series of manufacturing processes to assemble, the number of manufacturing processes increases, thereby increasing the manufacturing time. In addition, since a processing step such as forming a nitric acid is added to the lower end of the receiver tank 110 to screw the lower end cap 122, the manufacturing cost is increased accordingly.

The present invention is to solve the above problems, a heat exchanger and a method for manufacturing the same having a one-piece receiver to simplify the manufacturing process by brazing joint with the heat exchanger in the state of inserting the desiccant assembly and filter assembly in the receiver. The purpose is to provide.

In order to achieve the above object, a heat exchanger having an integrated receiver according to an aspect of the present invention,

A plurality of header pipes provided with inlet and outlet pipes, tubes connected in communication with the header pipes, heat dissipation pipes interposed on the outer surface of the tubes, and receivers coupled by the header pipes and connecting pipes; In a heat exchanger having an integrated receiver,

The receiver,

A receiver tank connected to any one of the header pipes by at least one connecting tube, and having a locking jaw portion at an inner circumferential surface thereof;

Upper and lower end caps for sealing the upper and lower ends of the receiver tank, respectively;                     

A desiccant assembly inserted into the receiver tank;

And a filter assembly installed below the desiccant assembly.

It is characterized in that the braze coupled to the heat exchanger in a state where the desiccant assembly and the filter assembly are respectively installed on the upper and lower engaging jaw portion of the receiver tank.

The filter assembly may further include an upper cap having a through hole through which a heat exchange medium flows, a lower cap communicatively coupled to the upper cap, and a filter interposed between the upper and lower caps.

In addition, the filter assembly is positioned on the upper surface of the upper cap in contact with the lower surface of the locking projections, characterized in that the filter is supported by the lower end cap, it is inserted into the receiver tank is fixed.

In addition, the filter is characterized in that the reticulated downward hemisphere so that the foreign matter in the receiver tank can be filtered.

Further, the desiccant assembly is characterized in that it comprises a desiccant network formed of a heat-resistant material seated on the upper surface of the locking projections, and a desiccant stored in the desiccant network.

Method for producing an integrated heat exchanger according to another aspect of the present invention,

A method of manufacturing a heat exchanger having an integrated receiver which inserts a tube between a plurality of header pipes which are installed to face each other, interposes a heat dissipation gap between the tubes, and couples a receiver coupled by the header pipe and a connecting tube. To

Forming a receiver tank of the receiver which is communicable with any one of the header pipes, and has a locking jaw formed on an inner circumferential surface thereof;

Inserting a desiccant assembly of a desiccant network in which a desiccant is stored in the receiver tank;

Inserting a filter assembly below the desiccant assembly;

Sealing the upper and lower ends of the receiver tank with upper and lower end caps;

Connecting the receiver tank to the header pipe by at least one or more connecting tubes, and assembling the receiver tank;

And brazing all together in a state in which the receiver is integrally coupled to the heat exchanger.

In addition, in the step of inserting the filter assembly,

And an upper cap having a through hole through which the heat exchange medium flows, a lower cap communicatively coupled thereto, and a filter assembly including a filter interposed between the upper cap and the lower cap so as to be supported on the lower surface of the locking jaw. do.

Hereinafter, a heat exchanger having an integrated receiver according to a preferred embodiment of the present invention with reference to the accompanying drawings will be described in detail.

2 illustrates a heat exchanger 20 having an integrated receiver 200 in accordance with one embodiment of the present invention.

Referring to the drawings, the heat exchanger 20 is provided with a first header pipe 21 and a second header pipe 22 provided to face the first header pipe 21. The first and second header pipes 21 and 22 may be formed by joining two pieces, for example, a header part and a tank part in a longitudinal direction.

A plurality of tubes 23 are coupled between the first and second header pipes 21 and 22 so that both ends communicate with each other, and are equally spaced at equal intervals. The tube 23 can be made of a plate-shaped extruded tube. On the outer surface of the tube 23, a heat dissipation fan 24 is interposed to enlarge the heat dissipation area.

The first header pipe 21 is provided with an inlet pipe 25 coupled to the first header pipe 21 to introduce a heat exchange medium of high temperature and high pressure into a gaseous phase from the compressor. In addition, the first header pipe 21 is provided with a discharge pipe 26 through which the heat exchange medium of the liquid heat exchanged is discharged. A plurality of baffles 27 are alternately installed in the first and second header pipes 21 and 22 so as to partition the space so that the heat exchange medium can flow in the tube 23 in a meandering manner.

According to a feature of the invention, the heat exchanger 20 is coupled to the receiver 200 is integrally communicated, the receiver 200 is heat exchange in a state in which the desiccant assembly and filter assembly therein It is in brazing joint with respect to group 20.

More detailed description is as follows.

3 illustrates a receiver 200 according to an embodiment of the present invention.

Referring to the drawings, the receiver 200 is provided with a receiver tank (210). The receiver tank 210 is cylindrical and has a hollow pipe shape. The receiver tank 210 includes at least one inlet pipe 221 and 222 communicating with the second header pipe 22 shown in FIG. 2 to introduce a condensed heat exchange medium, and a heat exchange medium separated into a liquid phase. The connection pipe which consists of the discharge pipe 223 which discharges is provided. A locking jaw portion 211 is formed on an inner circumferential surface of the receiver tank 210 corresponding to the second inflow pipe 222 and the discharge pipe 223. The upper end cap 231 and the lower end cap 232 are installed in the upper and lower portions of the receiver tank 210 so as to be sealed.

The desiccant assembly 240 is inserted from the upper side of the receiver tank 210, for example, upwardly from the locking jaw portion 211. The desiccant assembly 240 is provided with a cylindrical desiccant network 241. The desiccant net 241 is preferably a material having excellent heat resistance, such as a metal material such as SUS net, and a desiccant 242 is stored therein. Both ends of the desiccant network 241 are sealed by welding or the like in a state in which the desiccant 242 is embedded.

In addition, a filter assembly 250 is installed at a lower side of the receiver tank 210 in a downward direction of the locking jaw portion 211. The filter assembly 250 includes an upper cap 251, a lower cap 252 coupled with the upper cap 251, and a filter 253 installed between the upper and lower caps 251 and 252. It is included.

The upper cap 251 is a donut shape having a through hole 251a through which a heat exchange medium may flow, and a groove portion 251b having a predetermined depth is formed on a lower surface thereof.

The filter 253 is a mesh so that foreign matters of the heat exchange medium flowing into the receiver tank 210 may be filtered out. The upper portion of the filter 253 provides a contact surface 253a which is in contact with the groove portion 251b, and has a hemispherical shape as a whole.

The lower cap 252 is coupled to the upper cap 251 with the filter 253 interposed therebetween to support the filter 253. The lower cap 252 has an annular shape having a through hole 252a communicating with the upper cap 251, and an upper surface of the lower cap 252 has a coupling surface 252b for supporting the filter 253. to be.

In this case, the upper and lower caps 251 and 252 may have a shape in which a plurality of holes are formed, not a shape in which one through hole 251a and 252a is formed in the center. In addition, the upper and lower caps 251 and 252 are metal materials having excellent workability such as Al, and the filter 253 may be made of metal materials such as SUS.

4 illustrates a state in which the receiver 200 of FIG. 3 is coupled.

Referring to the drawings, the receiver tank 210 is formed with a plurality of through holes, the through holes are connected to the first and second inlet pipe 222 and the discharge pipe 223 that can communicate with the header pipe 22 (see Fig. 2). ) Is combined.

The desiccant assembly 240 and the filter assembly 250 are installed in the receiver tank 210.

The desiccant assembly 240 is inserted into an upper side of the receiver tank 100. That is, the desiccant network 241 in which the desiccant 242 is stored is seated so as to face upward from an upper surface of the locking jaw portion 211 formed between the second inlet pipe 222 and the discharge pipe 223. The upper end of the receiver tank 210 is sealed with an upper end cap 231.                     

The filter assembly 250 is installed under the desiccant assembly 240. That is, the upper surface of the upper cap 251 is in contact with the lower surface of the locking jaw portion 211. The mounting surface 253a of the filter 253 is in contact with the groove 251b formed on the lower surface of the upper cap 251, and the coupling surface 252b of the lower cap 252 supports the lower surface thereof. Accordingly, the position of the filter 253 is set in the state interposed between the upper and lower caps 251 and 252.

The lower end of the receiver tank 210 is sealed by a lower end cap 232. At this time, the lower end cap 232 is formed with a protruding portion to the center, and supports the lower portion of the hemispherical filter 253.

Thus, the desiccant assembly 240 and the filter assembly 250 are integrally assembled with the heat exchanger 20 in a state where the desiccant assembly 240 and the filter assembly 250 are installed in the receiver tank 240.

The manufacturing process of the heat exchanger 20 in which the receiver 200 having such a structure is integrated will be described with reference to FIGS. 2 and 4 as follows.

First, the receiver tank 210 is molded into a cylindrical pipe shape. At this time, the locking jaw portion 211 is formed on the lower side of the inner circumferential surface of the receiver tank (210). In addition, the reservator tank 210 is formed with a plurality of through-holes to which at least one inlet pipe 221, 222 and the outlet pipe 223 are connected to each other so as to communicate with the heat exchanger 20.

Subsequently, the desiccant network 241 in which the desiccant 242 is stored is inserted from the upper end of the receiver tank 210. The desiccant assembly 240 is positioned above the receiver tank 210 from an upper surface of the locking jaw portion 211.

Next, the filter assembly 250 is positioned below the desiccant assembly 240. That is, the mounting surface 253a of the hemispherical filter 252 is brought into contact with the annular groove 251b formed below the upper cap 251, and the coupling surface 252b of the lower cap 252 is mounted with the mounting surface 253a. Will be coupled to the bottom. Accordingly, a filter 252 is interposed between the upper cap 251 and the lower cap 252. The filter assembly 250 is inserted from the lower end of the receiver tank 210 to contact the lower surface of the locking jaw portion 211 to set its position.

When the desiccant assembly 240 and the filter assembly 250 are inserted into and fixed in the receiver tank 210, the upper and lower ends of the receiver tank 210 are sealed with upper and lower end caps 231 and 232. Let's go. At this time, the lower end cap 232 has a convex shape protruding from the center thereof, and supports the filter 252 from the lower side.

When the preliminary assembly of the receiver 200 is completed, a plurality of connecting pipes 221 to 223 are connected between the header pipe 22 and the receiver tank 210 of the heat exchanger 20 preassembled in a general process. .

After the receiver 200 is integrally assembled to the heat exchanger 20, the brazing process is performed by entering the brazing furnace. Accordingly, the coupling of the receiver 200 to the heat exchanger 20 is completed while the desiccant assembly 240 and the filter assembly 250 are inserted into the receiver tank 210.

As described above, the heat exchanger having the integrated receiver and the manufacturing method thereof according to the present invention can greatly simplify the number of manufacturing processes by integrating the receiver with the heat exchanger while the desiccant assembly and the filter assembly are inserted into the receiver tank. have. Accordingly, manufacturing costs can also be reduced.

In addition, the desiccant assembly and the filter assembly are firmly fixed in the receiver tank, and both ends are brazed by the upper and lower end caps, thereby preventing the heat exchange medium from leaking to the outside.

Although the present invention has been described with reference to one embodiment shown in the drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

Claims (7)

A plurality of header pipes provided with inlet and outlet pipes, tubes connected in communication with the header pipes, heat dissipation pipes interposed on the outer surface of the tubes, and receivers coupled by the header pipes and connecting pipes; In a heat exchanger having an integrated receiver, The receiver, A receiver tank connected to any one of the header pipes by at least one connecting tube, and having a locking jaw portion at an inner circumferential surface thereof; Upper and lower end caps for sealing the upper and lower ends of the receiver tank, respectively; A desiccant assembly inserted into the receiver tank; A filter assembly installed below the desiccant assembly, the upper cap having a through hole through which a heat exchange medium flows, a lower cap communicatively coupled to the upper cap, and a filter interposed between the upper and lower caps; But A heat exchanger having an integrated receiver according to claim 1, wherein the desiccant assembly and the filter assembly are respectively brazed and coupled to the upper and lower surfaces of the receiving jaw of the receiver tank. delete The method of claim 1, The filter assembly has a unitary receiver, characterized in that the position is set in contact with the lower surface of the locking jaw on the upper surface of the upper cap, the filter is supported by the lower end cap, and inserted into the receiver tank. heat transmitter. The method of claim 3, The filter is a heat exchanger having a monolithic receiver, characterized in that the mesh is formed in a hemispherical downward shape to filter foreign matter in the receiver tank. The method of claim 1, And the desiccant assembly includes a desiccant net formed of a heat-resistant material seated on an upper surface of the latching jaw, and a desiccant stored in the desiccant net. A method of manufacturing a heat exchanger having an integrated receiver which inserts a tube between a plurality of header pipes which are installed to face each other, interposes a heat dissipation gap between the tubes, and couples a receiver coupled by the header pipe and a connecting tube. To Forming a receiver tank of the receiver which is communicable with any one of the header pipes and has a locking jaw formed at an inner circumferential surface thereof; After molding the receiver tank, inserting a desiccant assembly of a desiccant network in which a desiccant is stored in the receiver tank; After inserting the desiccant assembly, inserting a filter assembly below the desiccant assembly; After inserting the filter assembly, sealing the upper and lower ends of the receiver tank with upper and lower end caps; After sealing with the upper and lower end caps, pre-assembling the receiver tank by connecting the header pipe with at least one connector; After the pre-assembly, brazing together in a state in which the receiver is integrally coupled to the heat exchanger. The method of claim 6, In the step of inserting the filter assembly, And an upper cap having a through hole through which the heat exchange medium flows, a lower cap communicatively coupled thereto, and a filter assembly including a filter interposed between the upper cap and the lower cap so as to be supported on the lower surface of the locking jaw. A method of manufacturing a heat exchanger having an integrated receiver.

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