KR20120016519A - Heat exchanger with joining-branch tank to join for header pipe - Google Patents

Abstract

PURPOSE: A heat exchanger having a branch joint tank is provided to stabilize a structure for an intake and a discharge of refrigerants and reduce a loss of the refrigerants by joining refrigerant supply and discharge pipes to a branch joint tank. CONSTITUTION: The heat exchanger comprises a branch joint tank(30). The refrigerant supply pipe(12) or the refrigerant discharge pipe(13) is connected to one side of the branch joint tank. The refrigerant inlet and outlet are formed in the branch joint tank. A tank connecting hole corresponding to the branch joint tank is formed in a header pipe(20). In the state of joining the tank connection hole of the header pipe and the refrigerant inlet/outlet of the branch joint tank, the header pipe and branch joint tank are joined in a body so that a leak of refrigerant is prevented at a joining part of the header pipe and branch joint tank.

Description

Heat Exchanger with Junction Branch Tank {HEAT EXCHANGER WITH JOINING-BRANCH TANK TO JOIN FOR HEADER PIPE}

The present invention relates to a heat exchanger, and more particularly, a junction branch tank is further provided to smoothly supply the refrigerant supplied to and discharged from the heat exchanger, so that the conventional refrigerant supply and discharge pipe is not directly connected to the header pipe. Since these pipes are coupled to the tank, the structure for the inflow and outflow of the refrigerant is stable, and the loss of the refrigerant is reduced, and the heat exchanger is provided with a junction branch tank for the overall quality of the heat exchanger.

In general, the heat exchanger is applied to various heat exchangers such as a car air conditioner, a household air conditioner, and a refrigerator, and is provided to release heat of a refrigerant flowing into the outside or absorb heat from the outside.

In addition, the refrigerant flowing into the heat exchange is achieved by forming a state change, a temperature change, or a pressure change. In particular, the refrigerant may be made to have a structure in which a heat exchanger may have a good heat exchanger, and a heat exchanger may have a good heat exchanger.

In addition, in order to achieve a heat exchange operation, there is a condenser or an evaporator, which is a heat exchanger installed inside or outside to perform heat exchange, and a plurality of members such as a pump are connected to each other by a refrigerant flow pipe. Therefore, most refrigerant flow pipes are made of copper material for flow characteristics.

On the other hand, most heat exchangers are made of aluminum to improve heat exchange characteristics, and heat exchange cores in which heat exchange with external air is made of a plurality of heat exchange tubes through which refrigerant flows.

Accordingly, the refrigerant flowing in the refrigerant flow pipe is branched into the plurality of heat exchange tubes, and the header pipe is coupled to the upper and lower portions so that the plurality of heat exchange tubes are coupled. Therefore, the refrigerant is divided into a plurality of heat exchange tubes by the header pipe, or the refrigerant is supplied or discharged to smoothly flow while performing a heat exchange action.

However, the conventional header pipe is mostly folded to form a pipe and the seams are joined by welding, and the joined portion is welded while forming a thin contact portion like a line. Therefore, if there is a shape deformation such as the welding part is bent at the time of welding or the welding situation becomes unstable at the time of welding, some welding defects occur in the narrow welding part. As described above, when there is a welding defect in the conventional header pipe, a high pressure refrigerant flows out, resulting in poor refrigerant flow characteristics and a decrease in heat exchange rate.

In addition, the header pipe is formed so that the refrigerant is divided into a plurality of heat exchange tubes for the refrigerant flow pipe for the inflow and discharge of the refrigerant. As a result, the shape of the header pipe is complicated, so that the joints of many members are complicated. A poor welding part may occur, and the structure in which the refrigerant flows is also complicated, resulting in poor heat exchange characteristics of the refrigerant.

In particular, the conventional header pipe for manufacturing a heat exchanger is not only combined with many members but also complicated in the manufacturing process, which leads to excessive equipment and mold investment costs, and complicated manufacturing process. There is a disadvantage in that the production capacity is significantly reduced, such as the need to add a welding process.

The present invention for solving the above problems is further provided with a junction branch tank to smoothly supply the refrigerant supplied and discharged to the heat exchanger, the conventional refrigerant supply and discharge pipe is not directly connected to the header pipe junction branch Since these pipes are coupled to the tank, the structure for the inflow and outflow of the refrigerant is stable and the loss of the refrigerant is reduced, so that the quality of the heat exchanger as a whole is good.

In addition, since the header pipe coupled to the junction branch tank only forms a configuration branched into a plurality of heat exchange tubes, the structure of the entire header pipe is simplified to have a stable refrigerant flow structure.

In addition, the header pipe according to the present invention is formed by fitting two members of the outer pipe and the inner pipe, and the joint area of the outer pipe and the inner pipe is widened so that the joint part has a stable shape, There is no leakage of refrigerant.

In addition, a protrusion having a groove and an inclined surface is formed in the fastening portion of the inner pipe and the inner pipe of the header pipe so that the protrusion is coupled by fitting, so that the coupling is performed by a pushing process, but is not easily separated after being combined once. The characteristic is good.

Furthermore, in the case of the junction branch tank, a separate pipe fastening port for providing a coolant supply pipe and a coolant discharge pipe, which are external coolant flow pipes, is provided, so that the pipe fastening hole may be provided as an integral part of the coolant flow pipe. On the other hand, a pipe fitting hole or a pipe fitting hole formed with a plate fitting groove into which the fitting plate is fitted to one side of the joint branch tank is provided. This allows the external coolant flow pipe to be coupled to the junction branch tank by simply fitting, simplifying the assembling process and ensuring a stable structure between the external refrigerant flow pipe and the junction branch tank. There is no loss.

In addition, there are a large number of holes in the header pipe, the junction branch tank, etc. of the present invention, so that a draw extension jaw protruding outwardly is formed in some of these holes, and a draw extension is extended to a hole of another member to which the draw extension jaw is coupled. The jaw is inserted into the coupling to prevent the leakage of the refrigerant.

In addition, the draw extension device is provided so that the draw extension jaw has a predetermined standard shape while being easily formed, and a draw extension jaw is formed in a standard size and shape so that the loss of refrigerant does not occur even during the fastening process and the fastening process. It is to avoid.

In the present invention for achieving the above object, the refrigerant is supplied from the refrigerant supply pipe 12, the heat exchanged refrigerant is discharged to the refrigerant discharge pipe 13, the upper portion of the heat exchange core (15) where heat exchange is performed while the refrigerant flows In the heat exchanger having a header pipe 20 and the lower portion, the junction branch tank 30 is formed in a pipe shape by connecting the refrigerant supply pipe 12 or the refrigerant discharge pipe 13 to one side, the junction branch tank The coolant outlet 31 is formed to allow the refrigerant contained therein to be introduced or discharged into the header pipe 20, and the coolant outlet of the junction branch tank 30 is formed in the header pipe 20. A tank connection hole 21 through which refrigerant flows in and out corresponding to the 31 flows is formed, such that the tank connection hole 21 of the header pipe 20 and the refrigerant outlet port 31 of the junction branch tank 30 are formed. The header in the engaged state The pipe 20 and the junction branch tank 30 is integrally bonded to the junction between the header pipe 20 and the junction branch tank 30, the refrigerant leakage is prevented to be provided so that the airtight state is provided A heat exchanger with a branch tank is provided.

In the tank connection hole 21 of the header pipe 20, a pull extension jaw 22 is formed to protrude outwardly, and the refrigerant flows out of the junction branch tank 30 coupled to the tank connection hole 21. In the state in which the drawing extension jaw 22 is inserted into the inlet 31, the contact area between the drawing extension jaw 22 and the coolant outlet 31 is widened and fixed, thereby preventing the outflow of the flowing refrigerant.

In addition, the side of the header pipe 20 is formed with a circulating through-hole 25 through which the refrigerant flows to other header pipes, and is isolated so as to isolate the internal space of the header pipe 20 in front of or behind the circulating through-hole 25. The plate 26 is further provided, and the outflow header pipe 201 through which the refrigerant flows in and out of the header pipe 20, and the refrigerant passing through the heat exchange core 15 on the opposite side of the heat exchange core 15 are returned to the heat exchange core. Between the return header pipe 202 and the heat exchange core 15 to be circulated, a single circulation structure, or a plurality of separators 26, to allow the supplied refrigerant to be circulated only once and the outflow header pipe 201 The return header pipe 202 may be provided to be implemented as one of a plurality of circulation structures configured to circulate a refrigerant over a plurality of times.

The header pipe 20 is formed to have a semi-circular cross section to cover the outside and to be coupled to the inside of the outpipe member 24 and the outpipe member 24 having the out fastening groove 241 for fastening therein. An inner pipe member 23 having an inner fastening protrusion 231 coupled to the out fastening groove 241 is formed, and the separator 26 or the end cap isolating plate 26 'is passed out through the inner pipe member 23. The inner fastening protrusion 231 prevents detachment from the out fastening groove 241 while pushing the inner pipe member 23 while being inserted into the pipe member 24 and preventing the inner pipe member 23 from being separated from the outer pipe member 24. The inner surface of the round contact portion to be in close contact with each other, the inner pipe member 23 and the out pipe member 24 after the assembly can be prevented from being separated and fully brazed can be provided to prevent unfusion.

In addition, the present invention, in the heat exchanger header pipe, the outer pipe member 24 is formed long in a semi-circular cross section to cover the outside, and coupled to the inside of the out pipe member 24 and coupled to the out pipe member 24 Two-piece by the combination of the outpipe member 24 and the inner pipe member 23 as the inner pipe member 23 to which the entire shape is formed in a pipe shape and the heat exchange tube 151 of the heat exchanger core 15 is coupled. It is provided in two pieces (Two Pieces Type), one side of the out pipe member 24 is formed with an out fastening groove 241, one side of the inner pipe member 23, the out pipe member 24 Inner fastening protrusions 231 protruding outward are formed so as to correspond to the out fastening grooves 241 of the inner fastening protrusions, and the inner fastening protrusions 231 form an inclined surface in the outpipe member 24 side direction to form an outpipe member. 24 and easy to fasten There will be provided a heat exchanger header pipe, characterized in that provided.

Furthermore, the present invention is provided with a draw device 50 for forming a draw extension 22 formed in the heat exchanger header pipe 20, the pull device 50, the inside of the header pipe 20 A pull molding tool 51, which is positioned and is prepared by being inserted into one side of the tank connection hole 21, is located outside the header pipe 20, and is pulled by the pull molding tool 51 with the pull molding tool 51. Is provided with a pull operation bolt 52 to move outwardly, the pull forming tool 51, a thread is formed therein and a screw threading portion 511 is inserted into the tank connection hole 21 and the header, A pull operation body 512 located inside the pipe 20 and having a diameter equal to an inner diameter of the pull extension jaw 22 of the tank connecting hole 21 formed by the pull operation; and the pull operation body 512; A narrow tank connection hole 21 is formed by forming an inclined surface connecting the pull screw connection part 511 to be wide. The drawings inclined working surface 513 for drawing the heat exchanger header pipes, characterized in that is provided with the forming apparatus so as to form a radial projection extends jaw (22) outwardly drawing is provided.

The present invention configured as described above is further provided with a junction branch tank so that the supply of the refrigerant to be supplied to and discharged from the heat exchanger is smooth, the conventional refrigerant supply and discharge pipes are not directly connected to the header pipe these are in the junction branch tank Since the pipe is combined, the structure for the inflow and outflow of the refrigerant is stable, and the loss of the refrigerant is reduced, so that the quality of the heat exchanger as a whole is excellent.

In particular, since the header pipe coupled to the junction branch tank only forms a configuration branched into a plurality of heat exchange tubes, the structure of the entire header pipe is also simplified to have a stable refrigerant flow structure.

In addition, the header pipe according to the present invention is formed by fitting two members of the outer pipe and the inner pipe, and the joint area of the outer pipe and the inner pipe is widened so that the joint part has a stable shape, There is no refrigerant leakage.

In addition, a protrusion having a groove and an inclined surface is formed in the fastening portion of the inner pipe and the inner pipe of the header pipe so that the protrusion is coupled by fitting, so that the coupling is performed by a pushing process, but is not easily separated after being combined once. The characteristic is good.

Furthermore, in the case of the junction branch tank, a separate pipe fastening port for providing a coolant supply pipe and a coolant discharge pipe, which are external coolant flow pipes, is provided, so that the pipe fastening hole may be provided as an integral part of the coolant flow pipe. On the other hand, a pipe fitting hole or a pipe fitting hole formed with a plate fitting groove into which the fitting plate is fitted to one side of the joint branch tank is provided. This allows the external coolant flow pipe to be coupled to the junction branch tank by simply fitting, simplifying the assembling process and ensuring a stable structure between the external refrigerant flow pipe and the junction branch tank. There is an excellent effect that there is no loss.

In addition, there are a large number of holes in the header pipe, the junction branch tank, etc. of the present invention, so that a draw extension jaw protruding outwardly is formed in some of these holes, and a draw extension is extended to a hole of another member to which the draw extension jaw is coupled. The jaw is inserted into the coupling to prevent the leakage of the refrigerant.

In addition, the draw extension device is provided so that the draw extension jaw has a predetermined standard shape while being easily formed, and a draw extension jaw is formed in a standard size and shape so that the loss of refrigerant does not occur even during the fastening process and the fastening process. It is to avoid.

1 is a schematic perspective view of a heat exchanger according to the present invention.
2 is a schematic exploded perspective view of a heat exchanger according to the present invention;
3 is a front view of a heat exchanger according to the present invention.
4 is a side view of a heat exchanger according to the present invention;
Figure 5 is a schematic perspective view of a single stage heat exchanger according to the present invention.
Figure 6 is a view of the separated state of the junction branch tank and the header pipe of the heat exchanger according to the present invention, a perspective view of an embodiment in which the pipe fastener of the junction branch tank is integrally formed.
Figure 7 is a view of a separated state for the junction branch tank and the header pipe of the heat exchanger according to the present invention, a perspective view of an embodiment consisting of a pipe fastener of the junction branch tank fitting assembly.
8 is an exploded perspective view of an embodiment in which the pipe joints of the junction branch tank are fitted and assembled in a state in which the junction branch tank and the header pipe of the heat exchanger according to the present invention are separated.
9 is an exploded perspective view of a junction branch tank of an embodiment in which the pipe fastener of the junction branch tank is fitted in the heat exchanger according to the present invention;
Figure 10 is an exploded perspective view in the direction of the core coupling portion of the pair of return header pipe in the heat exchanger according to the present invention.
Figure 11 is an exploded perspective view in the direction of the junction of the junction branch tank of the pair of inner-out coupling type return header pipe in the heat exchanger according to the present invention.
12 is an exploded perspective view of the inner-out coupled header pipe in the heat exchanger according to the present invention.
Figure 13 is an exemplary cross-sectional view of the inner-out coupling header pipe in the heat exchanger according to the present invention.
Figure 14 is an exploded view of the inner-out coupled header pipe in the heat exchanger according to the present invention.
Figure 15 is an illustration of a fastening cross section for the inner-out coupling header pipe in the heat exchanger according to the present invention.
16 is an exemplary view illustrating a coupling process for an inner-out coupled header pipe in a heat exchanger according to the present invention.
Figure 17 is an exemplary cross-sectional view of the separated state for the extraction device applied to the heat exchanger according to the present invention.
18 is an exemplary view of a state in which a drawing device applied to a heat exchanger according to the present invention is mounted on a header pipe;
19 is an exemplary view showing a state in which a pulling extension is formed in the header pipe by a drawing device applied to a heat exchanger according to the present invention.
20 is an exemplary view of a refrigerant flow in the heat exchanger according to the present invention.

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

That is, the heat exchanger 10 having the junction branch tank 30 according to the present invention has a refrigerant supply pipe 12 connected to refrigerant supply devices (generally known compressors, pumps, etc.) as shown in FIGS. 1 to 19. The refrigerant is supplied from the heat exchanger, and the heat-exchanged refrigerant is discharged to the refrigerant discharge pipe 13 to be recycled to the refrigerant supply device, and the header pipe is heated to the upper and lower portions of the heat exchange core 15 during which the heat is exchanged during the flow of the refrigerant. It relates to a heat exchanger (10) provided with (20). Of course, the heat exchanger according to the present invention may be applied as a condenser (condenser, an outdoor unit in the case of an air conditioner, a radiator in the rear of a refrigerator, a radiator of an engine part in an automobile), etc., which emits heat. Part, a heat exchanger in a refrigerating compartment or a freezer compartment in the case of a refrigerator, or a heat exchanger in a room of a car). In general, the material is preferably made of a material having excellent heat exchange. In particular, the long refrigerant flow pipe between the condenser and the evaporator is mostly made of the same material, and the header pipe of the heat exchanger, the tube of the heat exchange core, Fins and junction branch tanks are made of aluminum.

Of course, as in the embodiment of the present invention, some of the members may be implemented by using a stainless steel joint member in order to solve the joint instability between the refrigerant flow tube of the same material and the aluminum material of the heat exchanger.

The heat exchanger 10 having the junction branch tank 30 according to the present invention provided as described above is particularly connected to the refrigerant supply pipe 12 or the refrigerant discharge pipe 13 on one side of the junction branch tank 30 formed in a pipe shape. Will be provided.

In addition, the junction branch tank 30 has a refrigerant outlet inlet 31 to allow the refrigerant contained therein to be introduced into or discharged from the header pipe 20, and thus the header pipe 20 has the junction branch tank. The tank connection hole 21 in which the coolant flowing out flows in correspondence with the coolant outlet inlet 31 of 30 is formed. That is, the coolant outlet 31 and the tank connection hole 21 are integrally coupled to each other to form a state where the junction branch tank 30 and the header pipe 20 are integrally coupled to each other.

Thus, the header pipe 20 and the junction branch tank 30 are integrally formed in a state where the tank connection hole 21 of the header pipe 20 and the refrigerant outlet inlet 31 of the junction branch tank 30 are coupled to each other. It is bonded to the refrigerant pipe at the junction of the header pipe 20 and the junction branch tank 30 is to be provided so that the airtight state is achieved.

In addition, in the tank connection hole 21 of the header pipe 20, a pull extension jaw 22, which is a stepped outwardly, is formed, and the refrigerant flows out of the junction branch tank 30 coupled to the tank connection hole 21. In the state in which the drawing extension jaw 22 is inserted into the inlet 31, the bonding area between the drawing extension jaw 22 and the coolant outlet 31 is widened and fixed to prevent the outflow of the flowing refrigerant.

In particular, since the header pipe 20 and the junction branch tank 30 are integrally coupled as described above, even when vibration external forces such as an engine or a motor are applied, there is no fluctuation with respect to each other. There is no gap between the 21 and the refrigerant outlet 31 of the junction branch tank 30, so that there is no fear of refrigerant leakage. Thus, there is no refrigerant loss, while the heat transfer characteristics are good, resulting in superior heat exchange performance.

In addition, the side of the header pipe 20 may be formed with a circulation hole 25 through which the refrigerant flows to the other header pipe.

In addition, the separator 26 is further provided so that the inner space of the header pipe 20 is isolated to the front or rear of the circulation hole 25.

Among the header pipes 20, as shown in the accompanying drawings, an outflow header pipe 201 through which refrigerant flows in and out (in FIGS. 1, 2, 3, etc. of the accompanying drawings, the lower side of the drawing, and FIG. The upper part of the drawing) and the return header pipe 202 (refer to FIGS. 1, 2, 3, etc. of the accompanying drawings) for allowing the refrigerant flowing in the opposite side about the heat exchange core 15 to be circulated back to the heat exchange core side. The upper part of, and the lower side of the drawing in Figure 5) will be provided.

Between the outflow header pipe 201, the return header pipe 202, and the heat exchange core 15, the supply refrigerant may be circulated only once and may be implemented. This one-time circulation structure is 'refrigerant supply pipe 12 (In Pipe)'-> 'one side junction tank (30) (In Tank)'-> 'one side flow pipe (201) (In Header Pipe)'-> 'Heat exchange core (15)'-> 'Return header pipe (202)'-> 'Heat exchange core (15)'-> 'Outlet header pipe (201) (Out Header Pipe)'-> 'Other junction branch tank ( 30) (Out Tank)-> 'Refrigerant discharge pipe 13 (Out Pipe)', etc. will have a structure that the refrigerant is circulated.

On the other hand, a plurality of separators 26 may be formed in the outflow header pipe 201 and the return header pipe 202 so that the refrigerant circulates a plurality of times. In this case, before the refrigerant introduced through the refrigerant supply pipe 12, the one side junction branch tank, the one side inlet header pipe, is discharged through the other side inlet header pipe, the other junction branch tank, and the refrigerant outlet pipe 13, the 'one side inlet header pipe' '->' Heat exchanger tube of one side heat exchanger '->' One side return header pipe '->' Heat exchanger tube of the other side heat exchanger '->' Other side flow inlet header pipe '-> And' One side flow inlet header pipe '->' Heat exchange tube of one heat exchanger '->' One side return header pipe '->' Heat exchanger tube of other heat exchanger '->' Other heat exchanger tube ' It can be prepared.

Of course, in the accompanying drawings, as shown in FIG. 5, a header pipe including an outflow header pipe, a return header pipe, and a heat exchange core including a plurality of heat exchange tubes, heat exchange fins, and the like may be provided as a single arrangement, whereas FIGS. As in the example of FIG. 3, a header pipe including an outflow header pipe, a return header pipe, and a plurality of heat exchange cores including a plurality of heat exchange tubes, heat exchange fins, and the like may be provided in a plurality of arrangements.

As such, the outflow header pipe and the return header pipe of the header pipe may be positioned and implemented according to various situations, such as an upper side, a lower side, a left side, or a right side, based on a heat exchanger. It may be determined by the structure and the like. In the example of the accompanying drawings, the outflow and outflow header pipe of the header pipe is shown as an example, and the return header pipe is located on the upper side, but is not limited thereto, and may be applied and applied to suit the installation situation as described above. There will be.

Accordingly, the direction in which the refrigerant is introduced and heat-exchanged and then discharged may be implemented by various methods as shown in FIG. 20.

That is, FIG. 20 illustrates that two heat exchange tubes are applied. In the first picture, refrigerant is introduced into an upper side of one heat exchange tube of the heat exchanger, and refrigerant is discharged into an upper side of the other heat exchange tube.

The second figure shows the refrigerant flowing into the upper side of the heat exchanger tube on one side of the heat exchanger and the refrigerant flowing out to the lower side of the other side of the heat exchanger tube.

The third figure shows the refrigerant flowing into the upper side of the heat exchange tube on one side of the heat exchanger, and the refrigerant being discharged by being divided into the upper side and the lower side of the other side heat exchange tube.

The fourth figure shows the refrigerant flowing into the upper and lower sides of one heat exchange tube of the heat exchanger and the refrigerant discharged into the upper and lower sides of the other heat exchange tube.

The fifth figure shows the refrigerant flowing in the upper, lower and lateral directions of one heat exchange tube of one side of the heat exchanger, and the refrigerant flowing out of the upper side, the lower side and the other side of the other heat exchanger tube.

As the refrigerant is introduced and discharged in various ways and directions as described above, it may be appropriately selected and implemented according to the installation structure of the heat exchanger to be installed and the type and shape of the installation structure.

In particular, the structure to discharge downward is to facilitate the circulation of the oil contained in the refrigerant, the oil is mostly for lubrication of mechanical components such as pumps, the refrigerant contains a certain proportion of the oil during the circulation process. It will be well lubricated. However, when the refrigerant is not circulated due to the stop of the heat exchange operation, most of the oil contained in the refrigerant spread in the entire heat exchange tube will be collected in the lower portion. Therefore, it will be better that the refrigerant outlet is located in the downward direction so that this oil is easily discharged during the recirculation operation and easily supplied to the pump again. However, for heat exchangers that do not have problems with oil circulation, the upstream or side discharge structure may be used.

In addition, the heat exchange core, the header pipe, etc. may be carried out as a heat insulation arrangement, may be performed in a plurality of arrangements, and also be carried out according to the heat exchange treatment capacity and installation structure, etc., which are also implemented by various arrangement methods. Could be.

In the heat exchanger 10 provided with the junction branch tank 30 formed as described above, one embodiment of the flow of the refrigerant flows, as shown in an enlarged view of the bottom of FIG. 3, the refrigerant flows into the junction branch tank ( 30) It will flow inside.

In the accompanying drawings, the heat exchange tube 151 of the heat exchange core 15 divided by the separator 26 is divided by the separator 26 so as to flow three at the same time. Of course, the number of heat exchange tubes 151 through which refrigerant flows simultaneously may be freely determined according to the installation position of the separator 26.

In the accompanying example of the present invention is to achieve a structure that can be supplied and discharged to the three heat exchange tubes at the same time.

The three heat exchange tubes 151 are coupled to the tube coupling hole 27 of the header pipe 20. In addition, the tube coupling holes 27 are divided into three, and the separator 26 and the baffle are installed to form one header flow space 28. Therefore, one coolant outlet inlet 31 of the tank connecting hole 21 and the junction branch tank 30 of the header pipe 20 is formed in one header flow space 28, respectively.

Therefore, the refrigerant flowing into the junction branch tank 30 flows through the one refrigerant outlet inlet 31 and the tank connecting hole 21 to the header flow space 28 so as to be supplied to one header flow space 28. The refrigerant introduced into the first header flow space 28 is supplied to the three heat exchange tubes 151 through the three tube coupling holes 27 as shown in FIG. 3.

Therefore, since the refrigerant passing through the heat exchange tube 151 of the heat exchanger 15 is in contact with the heat exchange tube 151 and the heat exchange fins 152, the refrigerant exchanges with the outside air.

And again the discharge process will be similarly implemented.

Of course, in the case of the heat exchanger of the adiabatic arrangement of FIG. 5, the header pipes of the upper side and the lower side will be provided with a plurality of separators to separate the space and also have a continuous flow structure in zigzag.

5 and 1 to 3, the header pipe may be provided with an intermediate separator 16 for dividing a space in which a refrigerant flows in the middle, and blocking both ends of the header pipe to provide a refrigerant. An end cap separator 26 'may be provided to prevent leakage.

In the junction branch tank 30, which is provided together, a pipe connection port connected to the refrigerant supply pipe 12 or the refrigerant discharge pipe 13 is provided, and the pipe connection port is connected to the junction branch tank 30 as shown in FIG. It may be implemented as an integral pipe fastener 32 to be integrally bonded to the body and also integrally bonded to the pipe. And the opposite side of the integral pipe fastener 32 may also be carried out to be joined by the finishing material.

In addition, the fitting pipe fastener 33 may be provided by the fitting method as illustrated in FIGS. 7 and 8. To this end, a fitting plate 331 having a plate shape is fitted to the plate fitting groove 332 of the fitting pipe fastener 33, and the fitting pipe 334 is coupled to the fitting plate 331. will be. Therefore, the fitting fastening plate 331 is coupled to the plate fitting groove 332, the plate coupling pipe 334 is to be stably fitted to the pipe fitting groove 333. In this way, the fastener is provided by the fitting method so that the bond between the junction branch tank 30, the coolant supply pipe, and the coolant discharge pipe is excellent, thereby preventing the refrigerant from leaking. Of course, the fitting process with the pipes is easy because of the fitting method. In addition, the closing plate fastening hole 335 is also formed on the opposite end side of the fitting pipe fastening hole 33 may be provided so that the closing plate 336 is inserted.

Furthermore, a plurality of separator plates are provided in the header pipe, and a plurality of heat exchange tubes and heat exchange fins are coupled to the heat exchanger, and members of the integrated pipe fastener or the fitting pipe fastener are coupled to the junction branch tank. Many members, such as header pipes, heat exchangers, and junction branch tanks, may be prepared by separately joining them in advance, but in general, brazing operations using clads, fluxes, or TG welding, etc. It may be prepared to be bonded by a method known as. In particular, the heat exchanger, the header pipe, and the junction branch tank can be carried out in a state in which the whole is integrally joined by the brazing method, and the whole is integrally joined so that the gap does not occur as a whole. As a result, it forms a structurally stable form, and there is no leakage of refrigerant, thereby improving heat exchange efficiency.

In particular, in the heat exchanger, the junction branch tank 30 is provided at a portion where the refrigerant flows in and out, and the refrigerant flows out of the refrigerant supply pipe 12 and the refrigerant discharge pipe 13 through which the refrigerant flows, thereby achieving a stable coupling state. This is to be avoided.

In addition, the refrigerant is supplied to the header pipe 20 which is supplied while branching the refrigerant into a plurality of heat exchange tubes so that the refrigerant is supplied by dividing the individual header flow spaces 28, thereby binding characteristics between the header pipe 20 and the heat exchange tube 151. In addition to this, even if it has a plurality of flow circulation structure, since the circulation structure is the same only between the header pipe and the heat exchange tube, the circulation structure can be freely formed.

That is, the refrigerant circulation structure is formed between the plurality of heat exchange tubes and the header flow spaces 28 of the header pipe, and the junction branch tank is connected between the refrigerant supply pipe 12 and the refrigerant discharge pipe 13 and the header pipe with respect to the inflow and outflow of the refrigerant. By 30, the role of the refrigerant supply zone member (junction branch tank 30, refrigerant supply pipe 12, refrigerant discharge pipe 13, etc.) and refrigerant circulation structure member (heat exchange tube, header pipe, etc.) The absence is divided. In this way, the refrigerant supply zone and the refrigerant circulation structure region are divided so that the refrigerant flows in and out of the refrigerant supply region without refrigerant loss, and further, because the refrigerant circulation is stable in the refrigerant circulation structure region, the heat exchange characteristics are excellent.

Of course, since the refrigerant supply region and the refrigerant circulation structure region are integrally formed with each other, the shape structure of the entire heat exchanger is not disturbed, the refrigerant is not leaked, and the heat exchange characteristics are good.

The header pipe 20 for the heat exchanger 10 according to the present invention provided as described above may be provided in a single pipe form and may be provided in a tubular shape. Also, the header pipe may be manufactured by bending the original in the form of a plate into a tubular shape. Furthermore, such a header pipe may be implemented as a two-piece coupling type in the form of a single pipe by combining two elongated members as shown in FIGS. 11 to 16.

That is, as shown in FIGS. 11 to 16, the out-pipe member 24 is formed to have a semicircular cross-section and covers the outside, and is coupled to the inside of the out-pipe member 24 so that the out-pipe member 24 is formed. Inner pipe member 23 to form a pipe shape combined with the overall shape) may be combined to be provided in a two piece coupling type (Two Pieces Type).

The inner pipe member 23 coupled to the outpipe member 24 to form a two-piece coupling type has a plurality of tube coupling holes 27 for coupling a plurality of heat exchange tubes 151 of the heat exchanger core 15 to one side. It is formed on. In addition, a separator plate hole 271 is formed in which a separator plate 26 is coupled in the middle so that a plurality of tube coupling holes 27 are divided into a pair.

In addition, when the header pipe 20 is used as the return header pipe 202 shown in the upper side of FIG. 1, only the hole to which the separator 26 is coupled will be formed in the upper surface. On the other hand, when used as the outflow header pipe 201 shown in the lower side of Figure 1 will be formed in the tank connecting hole 21 for flowing the junction branch tank 30 and the refrigerant.

Furthermore, in some of the header pipes 20 to be used as the return header pipe 202 or the outflow header pipe 201 as shown in FIG. A circular through hole 25 may be formed on the side to flow.

In addition, an out fastening groove 241 is formed at one side of the outpipe member 24, and an out fastening groove 241 of the outpipe member 24 is formed at one side of the inner pipe member 23. Inner protrusions 231 protruding outward to be coupled to each other are formed.

In particular, the inner fastening protrusion 231 is formed to be inclined in the outpipe member 24 side direction is provided to facilitate the fastening with the outpipe member 24. That is, as shown in FIG. 16, the inner fastening protrusion 231 is coupled to the out fastening groove 241 during the process of pushing the outer pipe member 24 forming the outer shape toward the inner pipe member 23, and thus the out pipe member ( 24 and the inner pipe member 23 is integrally coupled.

The inner fastening protrusion 231 outer surface is formed in the inclined surface toward the direction in which the outer pipe member 24 is coupled, so that during the process of pushing out the pipe member 24 to the inner pipe member 23 is easily coupled on the inclined surface Will be.

On the other hand, since the opposite part of the inner fastening protrusion 231 forms an angle to form a protrusion, the sharp part of the inner fastening protrusion 231 is easily caught by the inner jaw of the out fastening groove 241 of the outpipe member 24. It will not be.

Therefore, the out-pipe member 24 and the inner pipe member 23 is not easily separated to maintain a stable coupling form. In this state, when the separator 16 is coupled to the plurality of separator holes 271 and the heat exchange core 15 and the junction branch tank 30 are integrally bonded together, they maintain a stable coupling shape without being shaken as a whole. .

In this regard, the separator 26 may be provided to be inserted into the outpipe member 24 and coupled to the inner side of the outpipe member 24.

In addition, the inner fastening protrusion 231 or the out fastening groove 241 is not provided where the separator 26 is located so that the airtight state by the separator 26 is maintained.

In particular, both header flow spaces 28 separated by the separator should be matched to each other so that the refrigerant does not leak even if the pressure of the high-pressure refrigerant acts on each other. For this purpose, the outward end portion of the inner pipe member 23 is It will be possible to achieve a sharp pointed shape.

Then, the inclined surface outside the inner fastening protrusion 231 extends to extend to the sharp part while drawing an arc, and as shown in FIGS. 13 to 16, the outer surface of the inner pipe member 23 and the inner surface of the outpipe member 24 are formed. In this case, the contact area may be increased, and thus, the joint state may be good, so that the airtight state may be maintained without any gap.

That is, the joint parts of the outpipe member 24, the inner pipe member 23, and the separator 26 are formed in conformity with each other so that the joint state is good, and the joint parts are formed wide so that they are divided. To maintain confidentiality between spaces. Thus, the heat exchange efficiency of the refrigerant is improved and the refrigerant flow is made stable. In particular, in the overlapping portions of the inner pipe member 23 and the outpipe member 24, as shown in Figure 16, because the parts in contact with each other are formed as a curved surface, the parts in contact with each other are in close contact with each other, and also inserted insertion In the process of being naturally slid to be coupled, and even after being in close contact, the contact parts are the same, thereby forming a wide contact surface. Therefore, the integral part becomes wider by the integral brazing, and maintains a stable airtight form, so that there is no fear of leaking the high-pressure refrigerant.

Looking again, as shown in Figure 16, the header pipe 20 is formed long in a semi-circular cross-section to cover the outside and the fastening groove 241 and the separator 26 or end cap separator 26 'for fastening. Out pipe member 24 formed with a separator plate hole 271 for insertion, etc., and an inner fastening protrusion 231 coupled to the inside of the out pipe member 24 and coupled to the out fastening groove 241 is formed. The inner pipe member 23 is used.

The separator 26 or the end cap isolating plate 26 inserted into the separator hole 271 is inserted into the header pipe 20, and the inner pipe member starts to be inserted from the out pipe member 24. It may be inserted into the (23) side. In addition, as shown in FIG. 16, it may be provided to start to be inserted from the separator insertion hole of the inner pipe member 23 and gradually penetrate toward the out pipe member 24.

As such, while passing through the inner pipe member 23 and the out pipe member 24, the inner fastening protrusion 231 of the inner pipe member 23 pushes the inner pipe member 23 outward in both directions and presses it outward. It is to be in close contact with the inner wall surface of the out fastening groove 241 of the out pipe member (24).

In addition, the force inserted during insertion by the separator 26 or the end cap isolation plate 26 'in the state where the inner pipe member 23 and the out pipe member 24 of the header pipe 20 are fitted to each other. As a result, the pushing force is pushed outward as shown in FIG. 16, so that the inner pipe member 23 is pushed in both sides so as to be in close contact with the inner surface of the outpipe member 24. In particular, since the contact surface of the inner pipe member 23 and the out pipe member 24 forms a rounded surface, the inner pipe member 23 is more stable to the inner surface of the out pipe member 23 by a force urging outwardly of the inner pipe member 23. It is close to the gap.

Therefore, after assembling, the inner pipe member 23 and the out pipe member 24 are prevented from being separated, and the outer round surface of the inner pipe member 23 and the inner surface of the out pipe member 24 are rounded to each other to be integrally in close contact with each other. Since it has a state, it will be provided in a state of being in close contact when brazing integrally to prevent unfusion.

In the heat exchanger provided with the junction branch tank according to the present invention provided in this way, a number of holes are formed in the junction branch tank 30, the header pipe 20 and the like, these holes are combined with other members to be joined together It will be arranged to be a hermetic bond. In particular, not only by simply forming a hole and by the brazing process, but also by forming a draw extension in one hole, the draw extension is inserted into the hole of the other side combined together, to prevent the leakage of refrigerant will be.

That is, including a plurality of holes in the junction branch tank for the heat exchanger, and a pull extension jaw 22 formed in the tank connection hole 21 of the header pipe 20, the circulation hole 25, the tube coupling hole 27, and the separator plate hole ( 271) The protruding jaw of the draw extension may be formed, and the draw apparatus 50 may be provided to form the protruding jaw of such a draw shape.

And the drawing device 50 may be provided as shown in Figures 17 to 19, etc., the drawing molding tool is located inside the header pipe 20 and one side is inserted into the tank connection hole 21 prepared ( 51 and a pull operation bolt 52, which is located outside the header pipe 20 and pulls the molding tool 51 and the pulling molding tool 51 by screwing, may be provided outward. .

In particular, in the drawing molding tool 51, a thread is formed therein and a drawing screw fastening portion 511 inserted into the tank connecting hole 21 and a tank connection formed by the drawing operation located inside the header pipe 20. A pull operation body 512 having a diameter equal to the inner diameter of the pull extension jaw 22 of the ball 21 will be provided. Therefore, the inner diameter of the hole formed by the drawing process will be equal to the outer diameter of the drawing operation body 512, and the outer diameter of the drawing extension jaw 22 is the diameter of the hole of the other member into which the drawing extension jaw 22 is inserted. By being the same as or similar to the fitting will be.

And the shape of the pull operation body 512 is to form a cylindrical shape when the hole formed by the pulling extension jaw 22 is a circular shape, and in the case of a long longitudinal hole is a column shape forming a long longitudinal cross section Will be. Of course, when a hole corresponding to the drawing extension jaw 22 is formed in various shapes such as a square hole, a polygonal hole, a triangular hole, and other hearts or stars, the drawing operation body 512 also has a pillar of a cross section having the corresponding shape. It will be formed into a shape.

Along with this, the pull operation bolt 52 is coupled to the top of the pull operation frame 53 to be rotated. The cross section of the pull operation frame 53 is generally formed in a 'c' shape, and both inner diameters of the legs extend the pull. It will correspond to the outer diameter of the jaw (22). Of course, the pull extension jaw 22 should be able to be inserted into the hole of the other member to be joined together, so that the inner diameter of both sides of the pull operation frame 53 may be made of a diameter similar to the size of the hole of the other member. will be.

In addition, in order to smooth the drawing process, the inclined surface between the drawing operation body 512 and the drawing screw fastening portion 511 to form a narrow diameter of the tank connection hole 21 is formed in a wide diameter pulled outward A pull slope operating surface 513 is formed to allow the extension jaw 22 to protrude.

Accordingly, when the pull operation bolt 52 coupled to the pull operation frame 53 rotates, the pull forming tool 51 gradually progresses upward, while the hole is pushed upward by the pull inclination operation surface 513. The diameter gradually widens during the process.

And eventually, as shown in Figure 19 is formed to extend upwardly pull extension jaw 22 is formed, the interior of this pull extension jaw 22 is the same as the outer diameter of the pull operation body 512 of the pull forming tool 51 Also, the outer diameter of the pull extension jaw 922 is equal to the inner diameter of the pull operation frame 53.

In this way, by simply pulling the extension jaw 22 to form a protruding extension jaw in a uniform form by rotating the pull operation bolt 52 will be able to work easily. In addition, since the shape of the drawing extension jaw 22 formed by the drawing process is uniform, and both the inner diameter and the outer diameter are formed in a size that meets the standard, the gap is formed when the joining process is performed by fitting and brazing the hole of another member. There is an excellent advantage of maintaining confidentiality.

Furthermore, the drawing device 50 may be provided as an automatic drawing device for simultaneously forming a plurality of drawing extension jaws 22 in addition to a single form, and the drawing operation bolt may also be provided to be rotated by the automatic device. Could be

The embodiments of the present invention have been described in detail above, but since the embodiments have been described so that those skilled in the art to which the present invention pertains can easily carry out the present invention, Application and implementation are also included in the technical details of the present invention and the technical spirit of the present invention should not be interpreted limitedly.

10: heat exchanger 12: refrigerant supply pipe
13: refrigerant discharge pipe 15: heat exchange core
20: header pipe 21: tank connection hole
22: draw extension jaw 23: inner pipe member
24: out pipe member 25: circulation hole
26: separator 27: tube coupling hole
28: header flow space 30: junction branch tank
31: refrigerant outlet 32: integral pipe fastener
33: fitting pipe fastener 50: drawing device
51: drawing forming tool 52: drawing operation bolt
53: drawing operation frame

Claims (5)

The refrigerant is supplied from the refrigerant supply pipe 12, the heat exchanged refrigerant is discharged to the refrigerant discharge pipe 13, the heat exchanger is provided with a header pipe 20 to the upper and lower portions of the heat exchange core 15, the heat exchange during the refrigerant flow In the phase,
The refrigerant supply pipe 12 or the refrigerant discharge pipe 13 is connected to one side is provided with a junction branch tank 30 formed in a pipe shape,
The junction branch tank 30 has a refrigerant outlet 31 to allow the refrigerant contained therein to be introduced or discharged into the header pipe 20 side,
The header pipe 20 is formed with a tank connection hole 21 through which the refrigerant flowing in and out corresponding to the refrigerant outlet inlet 31 of the junction branch tank 30 is formed,
The header pipe 20 and the junction branch tank 30 are integrally joined in a state where the tank connection hole 21 of the header pipe 20 and the refrigerant outlet inlet 31 of the junction branch tank 30 are coupled to each other. The heat exchanger with a junction branch tank, characterized in that the refrigerant pipe is prevented from leaking from the junction of the header pipe (20) and the junction branch tank (30) to achieve a gas tight state.
The method of claim 1,
In the tank connection hole 21 of the header pipe 20, a pull extension jaw 22, which is a step projecting outward, is formed,
Joining of the extraction extension 22 and the refrigerant outlet 31 in a state where the extraction extension 22 is inserted into the refrigerant outlet 31 of the junction branch tank 30 coupled to the tank connection hole 21. A heat exchanger having a junction branch tank, characterized in that the area is widened and fixed to prevent the flow of refrigerant.
3. The method according to claim 1 or 2,
On the side of the header pipe 20 is formed a circulation through-hole 25 through which the refrigerant flows to the other header pipe,
Separator 26 is further provided to isolate the inner space of the header pipe 20 to the front or rear of the circulation hole 25,
Outflow header pipe 201 through which the refrigerant flows in and out of the header pipe 20,
A return header pipe 202 for circulating the refrigerant passing through the heat exchange core 15 on the opposite side of the heat exchange core 15 back to the heat exchange core side;
And between the heat exchange cores 15,
One-circulation structure to allow the supplied refrigerant to be circulated only once,
Alternatively, a plurality of separators 26 are formed in the outflow header pipe 201 and the return header pipe 202 so that the refrigerant may be circulated in a plurality of cycles so as to be implemented in any one circulation structure. ,
The header pipe 20 is formed to have a semi-circular cross section to cover the outside and the out pipe member 24 having an out fastening groove 241 for fastening, and coupled to the inside of the out pipe member 24 and out. An inner pipe member 23 having an inner fastening protrusion 231 coupled to the fastening groove 241,
The inner fastening protrusion 231 is out-fastened while the separator 26 or the end cap isolating plate 26 'is inserted through the inner pipe member 23 into the out pipe member 24 while pushing the inner pipe member 23. The inner pipe member 23 and the out pipe member 24 are prevented from being separated from the groove 241 and the rounded contact portion between the outer surface of the inner pipe member 23 and the inner surface of the out pipe member 24 is brought into close contact with each other. Heat exchanger provided with a junction branch tank, characterized in that to prevent separation and to be in a state of being completely in contact with the brazing unit to prevent unmelted.
In the heat exchanger header pipe,
An outpipe member 24 formed long in a semicircular cross section and covering the outside;
The inner pipe member 23 coupled to the inside of the outpipe member 24 to form the pipe shape of the entire shape combined with the outpipe member 24 and to which the heat exchange tube 151 of the heat exchanger core 15 is coupled. It is provided as a two-piece coupling (Two Pieces Type) by the coupling of the outpipe member 24 and the inner pipe member 23,
One side of the out pipe member 24 is formed with an out fastening groove 241,
An inner fastening protrusion 231 protruding outward is formed at one side of the inner pipe member 23 to correspond to the out fastening groove 241 of the out pipe member 24.
The inner fastening protrusion 231 is formed in the inclined surface toward the out pipe member 24 side heat pipes, characterized in that it is provided to facilitate the fastening with the out pipe member (24).
Pulling device 50 is provided so that the pull extension jaw 22 formed in the heat exchanger header pipe 20 is formed,
The drawing device 50,
A drawing molding tool 51 positioned inside the header pipe 20 and having one side inserted into the tank connecting hole 21 and prepared therein;
A pull operation bolt 52 is provided outside the header pipe 20 so that the pull forming tool 51 and the pull forming tool 51 move outward by screwing.
The drawing molding tool 51,
Extraction screw fastening portion 511 is formed in the thread is inserted into the tank connecting hole 21,
A pull operation body 512 positioned inside the header pipe 20 and having a diameter equal to an inner diameter of the pull extension jaw 22 of the tank connecting hole 21 formed by the pull operation;
Pulling inclination to form the inclined surface between the drawing operation body 512 and the drawing screw fastening portion 511 to narrow the tank connection hole 21 is formed in a wide diameter while the drawing extension jaw 22 protrudes outwards. Pulling device for a heat exchanger header pipe, characterized in that the operating surface 513 is provided.

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