JP2013044487A - Liquid receiver-integrated heat exchanger - Google Patents

Abstract

PROBLEM TO BE SOLVED: To achieve reduction in constituent members, to eliminate the need of temporary fixing by welding and to achieve easy assembly while providing appropriate space between a liquid receiver and a header pipe.SOLUTION: A heat exchanger includes: a heat exchanger body 1A having a plurality of heat exchanging pipes 4 connecting between paired header pipes; and the liquid receiver 30 which is fixed to one of the header pipes, and which separates a refrigerant flowing out from the header pipe into liquid and vapor, and stores a liquid refrigerant. In the liquid receiver, first and second communicating sections 34 and 35 which respectively communicate with a refrigerant outflow hole 24 and a refrigerant inflow hole 25 formed through the header pipe are provided in projecting manner. The first and second communicating sections have tubular fitting portions 36 which can be insertion-fitted into the refrigerant outflow hole and the refrigerant inflow hole, respectively, and bulging hollow portions 38 having abutting faces 37 which can abut on a side face of the header pipe, respectively. The tubular fitting portions are insertion-fitted into the refrigerant outflow hole and the refrigerant inflow hole, respectively, at least one projecting part out of the projection parts projected into the inside of the header pipe, out of the first and second communicating sections is deformed to be fixed to the header pipe, and the abutting face is brazed to the header pipe.

Description

  The present invention relates to a receiver-integrated heat exchanger, and more specifically, is incorporated in an air conditioning facility installed in, for example, an automobile or a house, and includes a plurality of heat pipes between a pair of header pipes. The present invention relates to a liquid receiver-integrated heat exchanger in which a heat exchanger body and a liquid receiver to which an exchange pipe is connected are brazed and integrated.

  Conventionally, a heat exchanger body comprising a pair of header pipes facing each other and a plurality of heat exchange pipes connecting these header pipes, and being fixed to one of the pair of header pipes, heat exchange There is known a liquid receiver integrated heat exchanger including a liquid receiver that condenses the refrigerant that is condensed when flowing through the pipe and flows out from one header pipe to store the liquid refrigerant.

  In this current type of liquid receiver-integrated heat exchanger, as a method of fixing the heat exchanger main body and the liquid receiver before brazing, a method of temporarily fixing to the header pipe by spot welding is employed.

  Further, in this type of receiver integrated heat exchanger, a gap is provided between the header pipe and the receiver to prevent a decrease in refrigeration capacity. That is, by circulating the running wind and the blower air of the blower through the gap, the liquid receiver is cooled to suppress the vaporization of the liquid layer refrigerant of the liquid receiver, thereby preventing the refrigeration capacity from being lowered. Yes.

  Therefore, conventionally, a separate member such as a connecting member or a connecting member is interposed between the header pipe and the liquid receiver, and the separate member is engaged (fitted) with the liquid receiver or the liquid receiver and the header pipe. A liquid receiver integrated heat exchanger is known in which a gap is formed between a header pipe and a liquid receiver by temporarily fixing by spot welding and then brazing (see, for example, Patent Documents 1 and 2). ).

  Further, as another structure, a plate is interposed between the header tank and the liquid receiver, and the caulking claw provided on the plate is caulked and temporarily fixed to the header tank and the liquid receiver, and the upper end opening of the liquid receiver is A receiver-integrated condenser is known in which a caulking claw provided on a contact surface of a lid member to be closed is caulked and temporarily fixed to a protruding portion of a header tank, and then brazed (see, for example, Patent Document 3). ).

Japanese Patent Laid-Open No. 2000-320928 (Claims, paragraph 0026) Japanese Patent No. 3995452 (paragraphs 0061 and 0062, FIGS. 5 to 7) Japanese Patent Laying-Open No. 2003-314928 (Claims, FIGS. 2 and 3)

  However, in the thing of patent document 1, in order to weld a liquid receiver to a header tank, there exist the following problems.

1) The number of welding processes increases, and spattering and current management that are scattered during welding, which are problems unique to welding, are troublesome.

2) If it is welded at an incomplete position, correction becomes difficult.

3) The strength decreases due to the influence of heat during welding.

4) A back bead is generated depending on welding conditions, and the resistance of the refrigerant flow path is obtained.

5) A positioning jig for welding is required, which increases the number of assembly steps.

  On the other hand, in the one described in Patent Document 2, a caulking claw provided on a plate interposed between the header tank and the liquid receiver is caulked and temporarily fixed to the header tank and the liquid receiver. Since the caulking claw provided on the contact surface of the lid member that closes the upper end opening of the container is caulked and temporarily fixed to the protruding portion of the header tank, temporary fixing by spot welding is not necessary. However, in the device described in Patent Document 2, in addition to the plate interposed between the header tank and the liquid receiver, the lid member that closes the upper end opening of the liquid receiver is provided with a caulking claw to fix it. There is a concern that the number of temporary fixing steps increases as the number of components increases.

  The present invention has been made in view of the above circumstances, and it is possible to reduce the number of constituent members, eliminate the need for temporary fixing by welding, and facilitate the assembly by providing an appropriate gap between the liquid receiver and the header pipe. A liquid unit integrated heat exchanger is provided.

  In order to solve the above-described problems, a receiver-integrated heat exchanger according to the present invention includes a heat exchanger body including a pair of opposing header pipes and a plurality of heat exchange tubes connecting the header pipes. The liquid refrigerant is fixed to one header pipe of the pair of header pipes and is condensed when flowing through the heat exchange pipe, and the refrigerant flowing out from the one header pipe is gas-liquid separated. A liquid receiver integrated heat exchanger, wherein the liquid receiver is in communication with a refrigerant outflow hole and a refrigerant inflow hole provided in the one header pipe. A second communication portion is provided, and the first and second communication portions include a cylindrical fitting portion that can be inserted into the refrigerant outflow hole and the refrigerant inflow hole, respectively, Connect to the side of the header pipe connected to the base end side. A bulging hollow portion having an abutable contact surface, the cylindrical fitting portions of the first and second communication portions being inserted into the refrigerant outflow hole and the refrigerant inflow hole, and the first and second The protruding part in the header pipe of at least one of the communicating parts is deformed and fixed to the header pipe, and the header pipe and the contact surface are brazed. In this case, it is preferable that the protruding portion in the header pipe of at least one of the first and second communicating portions is expanded in diameter and fixed to the header pipe.

  By configuring in this way, the cylindrical fitting portions of the first and second communication portions projecting from the liquid receiver are inserted into the refrigerant outflow holes and the refrigerant inflow holes provided in the header pipe, and the first In a state where the contact surfaces of the first and second communication portions are in contact with the side surfaces of the header pipe, the protruding portion of the cylindrical fitting portion in at least one of the first and second communication portions is After the header pipe is deformed, for example, expanded in diameter and fixed to the header pipe, the receiver and the header pipe can be brazed.

  In this invention, a bottomed cylindrical positioning in which a positioning hole is provided on the upper side of the one header pipe, and a tip that can be inserted into the positioning hole is closed on the upper side of the liquid receiver. A positioning joint composed of a fitting portion and a bulging hollow portion having a contact surface that is connected to the base end side of the positioning fitting portion and is capable of contacting the side surface of the header pipe. Insert the bottomed cylindrical fitting part of the joint part into the positioning hole, deform the protruding part in the header pipe and fix it to the header pipe, and braze the header pipe and the contact surface Is preferred. In this case, it is preferable that the protruding portion in the header pipe of the bottomed cylindrical fitting portion of the positioning joint is pressure-deformed and fixed to the header pipe.

  With this configuration, the bottomed cylindrical fitting portion of the positioning joint protruding from the liquid receiver is inserted into the positioning hole provided in the header pipe, and the positioning joint abuts. After the surface is in contact with the side surface of the header pipe, the protrusion of the positioning fitting in the header pipe is deformed from the header pipe side, for example, pressure deformed and fixed to the header pipe, and then the receiver and header pipe Can be brazed.

  In the present invention, the header pipe is formed by first and second header pipe halves divided in the radial direction, and the first and second header pipe halves are brazed and joined together. Is preferred.

  By configuring in this manner, the refrigerant outlet hole provided in one header pipe half of the first and second header pipe halves and the first liquid pipe protruding from the receiver in the refrigerant inlet hole. And the cylindrical fitting part of the 2nd communication part is inserted and inserted, and the protrusion part of the cylindrical fitting part of at least one of the 1st and 2nd communication parts is expanded and deformed from the header pipe side. And can be fixed. Further, a positioning fitting portion protruding from the liquid receiver is inserted into a positioning hole provided in one of the first and second header pipe halves, and the positioning fitting is inserted. The projecting portion of the joint portion can be pressure-deformed from the header pipe side and fixed to the header pipe.

  According to the present invention, since it is configured as described above, it is possible to reduce the number of constituent members, eliminate the need for temporary fixing by welding, and easily assemble with an appropriate gap between the liquid receiver and the header pipe. Can be.

It is a schematic front view of the receiver integrated heat exchanger which concerns on this invention. FIG. 2 is an enlarged sectional view (a) of an I part in FIG. 1 and an enlarged sectional view (b) of an II part in FIG. They are the side view (a) of the receiver integrated heat exchanger which concerns on this invention, the top view (b) of (a), and the side view (c) of the header pipe in this invention. It is sectional drawing (a) and the end elevation (b) which follows the III-III line of (a) of the liquid receiver main body in this invention. It is side view (a) of the liquid receiver main body in this invention, sectional drawing (b) which follows the IV-IV line of (a), and sectional drawing (c) which follows the VV line of (a). It is sectional drawing (b) which follows the VI-VI line of the side view (a) of another liquid receiver main body in this invention, and (a). It is a cross-sectional perspective view which shows the cylindrical fitting part of the 1st and 2nd communicating part protrudingly provided by the liquid receiver in this invention. It is a cross-sectional perspective view which shows the fitting part for positioning projected from the liquid receiver in this invention. It is a section exploded perspective view showing the 1st and 2nd header pipe half and heat exchange pipe in this invention. It is a schematic sectional drawing (a) which shows the state before fixation of the communicating part of a liquid receiver in this invention and a header pipe, and the expanded sectional view (b) of (a). It is a schematic sectional drawing (a) which shows the fixed state of the communication part of the liquid receiver and header pipe in this invention, and the expanded sectional view (b) of (a). It is a schematic sectional drawing (a) and the expanded sectional view (b) of (a) which show the state before another fixation of the communicating part of a liquid receiver and a header pipe in this invention. It is a schematic sectional drawing (a) which shows another fixed state of the communicating part of a liquid receiver in this invention, and a header pipe, and the expanded sectional view (b) of (a). It is a schematic sectional drawing (a) which shows the state before fixation of the positioning part of the receiver and header pipe in this invention, and the expanded sectional view (b) of (a). It is a schematic sectional drawing (a) which shows the fixed state of the positioning part of the liquid receiver and header pipe in this invention, and the expanded sectional view (b) of (a). It is a schematic sectional drawing (a) which shows another state before fixing of the positioning part of a liquid receiver and a header pipe in this invention, and is an expanded sectional view (b) of (a). It is a schematic sectional drawing (a) which shows another fixation state of the positioning part of the receiver and header pipe in this invention, and the expanded sectional view (b) of (a). It is a schematic sectional drawing which shows another fixing procedure of the communication part of the liquid receiver and header pipe in this invention. It is a schematic sectional drawing which shows another fixing procedure of the communication part of the liquid receiver and header pipe in this invention. It is a schematic sectional drawing which shows another fixing procedure of the receiver and the positioning part of a header pipe in this invention. Schematic cross-sectional view (a), a side view (b) of (a), and a schematic cross-sectional view showing the fixed state (a) before the fixing of the communicating portion and positioning portion of the liquid receiver and the header pipe in this invention It is a side view of c) and (c).

  Embodiments of a receiver-integrated heat exchanger according to the present invention will be described below in detail with reference to the accompanying drawings. Here, the case where the receiver integrated heat exchanger according to the present invention is applied to a vehicle-mounted receiver integrated condenser will be described.

  As shown in FIG. 1, the heat exchanger 1 includes a pair of header pipes 2 and 3 facing each other, and a plurality of flat heat exchange tubes arranged in parallel to each other to connect the header pipes 2 and 3 4 and a heat exchanger main body 1A composed of heat exchange fins, for example, corrugated fins 5, which are interposed between the heat exchange pipes 4 and joined together, and fixed to one header pipe 2. And a liquid receiver 30 that stores the liquid refrigerant by gas-liquid separation of the refrigerant that is condensed when flowing through the heat exchange pipe 4 and flows out from the one header pipe 2.

  Note that side plates 4A formed in the same manner as the heat exchange tubes 4 are disposed on the upper and lower ends of the heat exchanger main body 1A in which the heat exchange tubes 4 and the corrugated fins 5 are alternately stacked. A bracket 6 that is a fixing member for fixing the heat exchanger 1 to an external fixing part is joined to at least the upper ends of both header pipes 2 and 3.

  In this case, a first partition portion 1a is provided at an intermediate portion of one header pipe 2, and a second partition portion 1b is provided below the intermediate portion. In addition, a refrigerant outflow hole 24 is provided on a side surface of the header pipe 2 between the first partition portion 1a and the second partition portion 1b, and a refrigerant inflow hole 25 is provided below the second partition portion 1b. Is provided. The refrigerant outflow hole 24 and the refrigerant inflow hole 25 are communicated with first and second refrigerant communication portions 34 and 35 described later provided in the liquid receiver 30. Further, a positioning hole 26 is provided on the side surface on the upper end side of the header pipe 2, and a bottomed cylindrical fitting of a positioning joint 39, which will be described later, projecting from the liquid receiver 30 in the positioning hole 26. The joint 40 can be inserted.

  A third partition portion 1c is provided at a position facing the second partition portion 1b below the intermediate portion of the other header pipe 3.

  Furthermore, an inlet portion 7 for connecting an inflow pipe (not shown) of a heat exchange medium (hereinafter referred to as a refrigerant) is connected to the side surface of the upper end portion of one header pipe 2, and the lower end of the other header pipe 3 is connected. An outflow port 8 for connecting a refrigerant outflow pipe (not shown) is connected to a side surface of the unit.

  In the heat exchanger 1 configured as described above, the refrigerant flowing into the header pipe 2 from the refrigerant inflow pipe 7 passes through the heat exchange pipe 4 from the header chamber above the first partition portion 1a of the header pipe 2. After being circulated and cooled to the gas-liquid mixed state in the condenser part C1 above the second and third partition parts 1b, 1c, it flows into the liquid receiver 30 from the refrigerant outlet hole 24 and is separated into gas and liquid. The liquid refrigerant is stored in the liquid receiver 30, and the remaining refrigerant flows through the refrigerant inflow hole 25 to the subcool section C <b> 2 below the second and third partition parts 1 b and 1 c, and enters the outlet part 8. The refrigerant is sent from a refrigerant outlet pipe to be connected to an expansion valve (not shown).

  In this case, the header pipes 2 and 3 are formed of a first header pipe half 10 and a second header pipe half 20 that divide the header pipes 2 and 3 in the radial direction. That is, the header pipe 2 will be described as a representative. The header pipe 2 includes a closing piece 11 that closes the upper and lower ends in the longitudinal direction of the header pipe 2 and a partition piece 12 that constitutes the first partition portion 1a. The first header pipe half 10 formed in the first header pipe half 10 and the second header pipe half provided with slits 21a and 21b for fitting the closing piece 11 and the partition piece 12 formed in the first header pipe half 10 respectively. The body 20 is joined by brazing.

  In this case, as shown in FIGS. 2 and 9, the first header pipe half 10 integrally forms a plate-like base portion 13 and a closing piece 11 at one end portion in the longitudinal direction of the plate-like base portion 13. At the same time, it is formed by two header pipe members 14A and 14B in which a partition piece 12 is integrally formed at the other end.

  The header pipe members 14A and 14B are made of, for example, an aluminum alloy plate material clad with a brazing material at least on one side, and the closing piece 11 is bent at one end in the longitudinal direction of the plate-like base portion 13 by pressing. The partition piece 12 is bent at the other end. Further, on both sides of the plate-like base portion 13, a concave-convex fitting portion 15 is formed in which a rectangular convex portion 15 a and a concave portion 15 b along the longitudinal direction of the plate-like base portion 13 are continuous. The plate-like base 13 is provided with flat rectangular heat exchange slits 16 at equal intervals along the longitudinal direction. The header pipe members 14A and 14B are formed in the same manner except that the length of the plate-like base portion 13 of the header pipe member 14A is longer than that of the plate-like base portion 13 of the header pipe member 14B.

  As shown in FIGS. 2 and 9, the second header pipe half 20 has slits 21 a and 21 b in the bottom portion 22 a in which the closing piece 11 and the partition piece 12 of the first header pipe half 10 can be fitted. A concave base portion 22 having a concave cross section is formed, and a concave and convex fitting portion 23 is formed on both side wall portions 22b of the concave base portion 22 so that a rectangular convex portion 23a and a concave portion 23b are continuous along the side wall portion 22b. .

  The second header pipe half 20 is formed of, for example, an aluminum alloy plate having at least one surface clad with a brazing material, formed into a substantially semi-cylindrical cross section by pressing, and has a bottom 22 a of the concave base 22. Are provided with slits 21a into which the end portions of the closing pieces 11 provided in the first header pipe half 10 can be fitted, and the first header pipe half on the upper side from the intermediate portion. A slit 21b into which two partition pieces 12 provided on the body 10 can be fitted is provided. In addition, a refrigerant outflow hole 24 and a refrigerant inflow hole 25 are provided at two positions on the lower end side of the bottom 22 a of the concave base 22. Further, a positioning hole 26 is provided on the upper end side of the bottom 22 a of the concave base 22.

  The concave / convex fitting portions 23 formed on both side walls 22b of the concave base portion 22 of the second header pipe half 20 and both sides of the plate base portions 13 of the header pipe members 14A and 14B of the first header pipe half 10 are shown. The concavo-convex fitting part 15 provided in the can be fitted.

  The heat exchange tube 4 is formed of, for example, an extruded shape made of an aluminum alloy, and is partitioned by a plurality of partition walls 4b in a heat exchange tube body 4a having a flat rectangular cross section as shown in FIG. A refrigerant flow passage 4c is provided. The heat exchange tube 4 having a flat rectangular cross section formed in this way is inside a heat exchange slit 16 provided in the plate-like base portion 13 of the header pipe members 14A and 14B constituting the first header pipe half body 10. To be fitted.

  The side plate 4A is formed of an extruded shape made of, for example, an aluminum alloy, like the heat exchange tube 4.

  The corrugated fins 5 are formed by bending an aluminum alloy strip whose brazing material is clad on both sides into a wave shape.

  On the other hand, the liquid receiver 30 includes, for example, a liquid receiver body 31 formed of an extruded shape made of an aluminum alloy, and an upper end opening and a lower end opening of the liquid receiver body 31, similarly to the heat exchange pipe 4. The outer surface to be closed includes lid bodies 32 and 33 made of aluminum alloy clad with brazing material.

  Further, as shown in FIGS. 2 to 8, the first and second sides that can communicate with the refrigerant outflow hole 24 and the refrigerant inflow hole 25 provided in the header pipe 2 are provided on the lower end side of the liquid receiver body 31. The communication parts 34 and 35 are projected. In this case, the first and second communication portions 34, 35 are respectively a cylindrical fitting portion 36 that can be inserted into the refrigerant outflow hole 24 and the refrigerant inflow hole 25, and a base end of the cylindrical fitting portion 36. And a bulging hollow portion 38 having a concave contact surface 37 that is continuous with the side surface of the header pipe 2 (the bottom surface 22a of the second header pipe half 20). The shape of the bulging hollow portion 38 may be an arbitrary shape, may be a rectangular shape as shown in FIG. 5, or may be a circular bulging hollow portion 38a as shown in FIG. The cylindrical fitting part 36 and the bulging hollow parts 38, 38a of the first and second communication parts 34, 35 are, for example, a convex mold inserted into the receiver body 31 and the convex mold. It is formed by two-stage burring by press working with a receiving mold that engages with.

  The cylindrical fitting portions 36 of the first and second communication portions 34 and 35 formed in this way are inserted into the refrigerant outflow holes 24 and the refrigerant inflow holes 25, and the projecting portions in the header pipe 2 are deformed, for example. The diameter expansion deformation, that is, the caulking header pipe 2 (second header pipe half 20) and the liquid receiver body 31 are fixed.

  As shown in FIGS. 2 to 8, the upper part of the receiver body 31 can be fitted into a positioning hole 26 provided in the header pipe 2 (second header pipe half 20). A bottomed tubular fitting part 40 having a bottomed cylindrical shape with a closed end, and a side surface of the header pipe 2 (second header pipe half 20) connected to the base end side of the bottomed tubular fitting part 40. A positioning joint 39 including a bulging hollow portion 42 having a concave contact surface 41 capable of contacting with the bottom surface 22a) is provided. The height of the bulging hollow portion 42 of the positioning joint 39 is formed to be the same height as the bulging hollow portion 38 of the first and second communicating portions 34 and 35. The bottomed tubular fitting portion 40 of the bottomed cylindrical portion of the positioning joint 39 includes, for example, a convex mold inserted into the receiver body 31 and a receiver engaged with the convex mold. It is formed by a two-stage convex shape by pressing with a mold.

  The bottomed cylindrical fitting portion of the positioning joint 39 formed in this way is inserted into the positioning hole 26, and the protruding portion in the header pipe is deformed, for example, pressed and deformed, and the edge of the positioning hole 26 is formed. The header pipe 2 (second header pipe half 20) and the liquid receiver body 31 are fixed to the outside of the part.

  Next, the assembly procedure of the header pipe 2 and the liquid receiver 20 (specifically, the liquid receiver body 31) of the heat exchanger 1 of the above embodiment and the heat exchanger assembly procedure will be described.

  First, in order to fix the refrigerant communication portion between the header pipe 2 and the liquid receiver 30, the refrigerant outlet hole 24 and the refrigerant inlet hole 25 provided in the header pipe half 20 constituting the header pipe 2 are received. The cylindrical fitting portions 36 of the first and second communication portions 34 and 35 projecting from the liquid device 30 are inserted and the contact surfaces 37 of the first and second communication portions 34 and 35 are inserted into the header pipe 2. The protruding portion of the cylindrical fitting portion 36 in the header pipe half 20 is pressed from the inside of the header pipe half 20 to the press with the receiver 30 side fixed with a fixing jig (not shown). The projecting portion in the header pipe half 20 is deformed, for example, expanded in diameter, and the header pipe half 20 and the liquid receiver body 31 are fixed. On the other hand, in order to fix the positioning part of the header pipe 2 and the liquid receiver 30, the positioning joint 39 projecting from the liquid receiver 30 is inserted into the positioning hole 26 provided in the header pipe half 20. A bottomed tubular fitting portion 40 having a bottomed tubular shape is inserted, the contact surface 41 of the positioning joint 39 is brought into contact with the side surface of the header pipe 2, and the liquid receiver 30 side is fixed with a fixing jig (not shown). In this state, the protruding portion of the positioning joint 39 in the header pipe half 20 is processed with a press from the inside of the header pipe half 20, and the protruding portion in the header pipe half 20 is deformed, for example, pressed and deformed. Then, the header pipe half 20 and the liquid receiver body 31 are fixed.

  The same applies to the refrigerant inflow pipe and the refrigerant outflow pipe. The inflow pipe of the refrigerant inflow port 7 is connected to the side surface of the upper end of the header pipe 2, the positioning fitting portion is inserted into the positioning hole 26, and the header pipe is inserted. The protruding portion of the positioning joint is pressed and deformed from the inside of the header pipe half 20 from the inside of the half body 20 to fix the header pipe half 20 and the refrigerant inflow pipe. The same applies to the outflow pipe of the refrigerant outlet part 8 on the side surface of the lower end part of the header pipe 3.

  After fixing the header pipe half 20 and the receiver main body 31, the refrigerant inflow pipe, and the refrigerant outflow pipe as described above, the partition pieces 12 of the header pipe members 14A and 14B of the first header pipe half 10 are fixed. In the overlapped state, the closing piece 11 and the partition piece 12 of the first header pipe half 10 are fitted into the slits 1a and 1b provided in the bottom 22a of the concave base 22 of the second header pipe half 20, respectively. In addition, the concave-convex fitting portions 15 provided on both sides of the plate-like base portion 13 of the header pipe members 14A and 14B of the first header pipe half body 10, and both side walls of the concave base portion 22 of the second header pipe half body 20 The header pipes 2 and 3 are assembled by fitting the concave-convex fitting portion 23 provided in the portion 22b.

  On the other hand, the heat exchanger tubes 4 and the corrugated fins 5 are alternately laminated, and side plates 4A are laminated on the upper and lower ends to constitute the heat exchanger body 1A. Then, the end portions of the heat exchange pipe 4 and the side plate 4A are fitted into heat exchange slits 16 provided in the plate-like base portions 13 of the header pipe members 14A and 14B of the first header pipe half 10 of the heat exchange pipe. Then, temporarily assembled and fixed with a fixing jig (not shown).

  The heat exchanger 1 temporarily assembled as described above is carried into a furnace (not shown) and heated at a predetermined temperature, for example, a temperature of about 600 ° C., and the first header pipe half 10 (header Pipe member 14A, 14B), second header pipe half 20, heat exchange tube 4, side plate 4A, corrugated fin 5, bracket 6, receiver body 31, and aluminum alloy lids 32, 33 And the heat exchanger 1 is produced.

  According to the heat exchanger 1 configured as described above, the cylindrical fitting portion 36 of the first and second communication portions 34 and 35 protruding from the liquid receiver 30 is provided in the header pipe 2. The refrigerant outlet hole 24 and the refrigerant inlet hole 25 are inserted and the contact surfaces 37 of the first and second communication portions 34 and 35 are formed on the side surface of the header pipe 2 (specifically, the bottom 22a of the header pipe half 20). In the state where it is in contact with the side surface), the projecting portion of the cylindrical fitting portion 36 in the header pipe 2, that is, the inner side of the header pipe half 20 is expanded and deformed from the inner side of the header pipe half 20. Since it fixes with the pipe half body 20, fixation with the header pipe 2 and the liquid receiver 30 can be strengthened.

  Further, the bottomed cylindrical fitting portion 40 of the positioning joint 39 protruding from the liquid receiver 30 is inserted into the positioning hole 26 provided in the header pipe 2 so that the positioning joint 39 abuts. With the surface 41 in contact with the side surface of the header pipe 2 (specifically, the side surface of the bottom portion 22a of the header pipe half 20), the bottomed cylindrical shape in the header pipe 2, that is, the inner side of the header pipe half 20 Since the protruding portion of the fitting portion 40 is pressed and deformed from the inner side of the header pipe half 20 and fixed to the header pipe half 20, the header pipe 2 and the liquid receiver 30 are securely fixed at predetermined positions. can do.

  Therefore, since no joining member is interposed between the header pipe 2 and the liquid receiver 30, the number of constituent members can be reduced, and temporary fixing by welding is unnecessary, and the liquid receiver 30 and the header pipe 2 are eliminated. Thus, it is possible to facilitate assembly with a moderate gap S.

  In the above embodiment, the receiver-integrated heat exchanger according to the present invention has been described for a vehicle-mounted condenser. However, the receiver-integrated heat exchanger according to the present invention is installed in a house or the like. Of course, the present invention can also be applied to a condenser incorporated in an air conditioning facility.

  In the above-described embodiment, the case where the header pipe 2 is formed by the half-divided header pipe halves 10 and 20 has been described. However, the present invention can be applied even when the header pipe 2 is not divided into two.

  For example, when fixing the 1st and 2nd communication parts 34 and 35 of the liquid receiver 30, and the refrigerant | coolant inflow hole 24 and the refrigerant | coolant outflow hole 25 of the header pipe 2, it shows to Fig.10 (a), (b). As described above, the cylindrical fitting portion 36 of the first and second communication portions 34, 35 is inserted into the refrigerant outflow hole 24 and the refrigerant inflow hole 25, and the diameter of 2 is increased in the header pipe 2. A metal core 50 having two convex portions 51 is inserted. Then, after positioning so that the convex part 51 may correspond to the cylindrical fitting part 36, it presses with a press in the state fixed with the fixing jig 70, and deform | transforms the protrusion part in the header pipe 2, for example, diameter expansion deformation That is, the header pipe 2 and the liquid receiver main body 31 are fixed by caulking (see FIGS. 11A and 11B).

  The core metal 50 may have any shape as long as the protruding portion can be easily deformed by pressure, and the core metal 50 may be divided into two parts so that the insertion into and removal from the header pipe 2 can be performed smoothly. .

  For example, the core metal 50 has a split structure of an upper core metal 50a with a convex portion 51 and a lower core metal 50b. When inserting the cored bar 50 formed in this way into the header pipe 2, first, the side having the convex portion 51 of the upper cored bar 50a is placed at a position corresponding to the inside of the cylindrical fitting part 36 of the liquid receiver 30. After the setting, next, the lower cored bar 50 b without the convex portion 51 is inserted into the header pipe 2. By doing in this way, since the upper metal core 50a which has the convex part 51 can be set in the state in which the space for the lower metal core 50b was vacant, workability | operativity improves.

  Thereafter, pressure is applied with a press while the liquid receiver 30 side is fixed by the fixing jig 70, and the protruding portion in the header pipe 2 is deformed, for example, expanded in diameter, that is, caulked, the header pipe 2 and the liquid receiver body 31 To fix.

  Further, after caulking with a press, the lower cored bar 50b is first slid in the horizontal direction to be removed out of the header pipe 2.

  Thereafter, the upper cored bar 50a with the convex portion 51 is lowered in the space formed in the lower part in the header pipe 2, and the upper cored bar 50a is slid in the horizontal direction to be removed outside the header pipe 2. By doing in this way, since the vacant space after removal of the lower core metal 50b can be used as a slide space in the lateral direction of the upper core metal 50a having the convex portions 51, sufficient space can be secured. This improves the workability (see FIGS. 12A, 12B, 13A, 13B).

  On the other hand, when the bottomed cylindrical fitting portion 40 of the positioning joint portion 39 is fixed to the header pipe 20, first, as shown in FIGS. 14 (a) and 14 (b), the first and second communicating portions. Similarly to the fixing method 34, 35, the protruding portion 61 of the bottomed cylindrical fitting portion 40 is inserted into the positioning hole 26 provided in the header pipe 2, and the convex portion 61 is inserted into the header pipe 2. The cored bar 60 is inserted. Then, after positioning so that the convex part 61 respond | corresponds to the bottomed cylindrical fitting part 40, it pressurizes with a press in the state which fixed the liquid receiver 30 side with the jig | tool which is not shown in figure, and in the header pipe 2 The projecting portion is deformed, for example, pressure deformed, that is, caulked to fix the header pipe 2 and the liquid receiver body 31. (See FIGS. 15A and 15B).

  The core metal 60 may have any shape as long as the protruding portion can be easily deformed by pressure, and may be divided into two parts so that the insertion and removal from the header pipe 2 can be performed smoothly.

  For example, the core metal 60 has a split structure of an upper core metal 60a with a convex portion 61 and a lower core metal 60b. When putting the cored bar 60 formed in this way into the header pipe 2, first, the position of the upper cored bar 60 a corresponding to the bottomed cylindrical fitting part 40 of the liquid receiver 30 is the position corresponding to the bottomed cylindrical fitting part 40. Next, the lower cored bar 60b without the convex portion 61 is inserted into the header pipe 2. By doing in this way, since the upper metal core 60a which has the convex part 61 can be set in the state in which the space for the lower metal core 60b was vacant, workability | operativity improves.

  Thereafter, the liquid receiver 30 side is pressed by a press while being fixed by the fixing jig 70, and the protruding portion of the bottomed cylindrical fitting portion 40 in the header pipe 2 is pressurized and deformed to receive the header pipe 2 and the receiver pipe 2. The liquid body 31 is fixed.

  Further, after caulking with a press, the lower cored bar 60b is first slid in the horizontal direction to be removed out of the header pipe 2.

  Thereafter, the upper cored bar 60a with the convex portion 61 is lowered in the space formed in the lower part in the header pipe 2, and the upper cored bar 60a is slid horizontally to be removed outside the header pipe 2. By doing so, the vacant space after the removal of the lower metal core 60b can be used as a slide space in the lateral direction of the upper metal core 60a having the convex portions 61, so that sufficient space can be secured. This improves the workability (see FIGS. 16A, 16B, 17A, and 17B).

  It should be noted that the first and second communicating portions 34 and 35 of the liquid receiver 30 and the refrigerant inflow hole 24 and the refrigerant outflow hole 25 of the header pipe 2 are fixed, and the bottomed cylindrical fitting portion 40 of the positioning joint 39 is provided. It is also possible to fix the header pipe 2 using a single metal core.

  As described above, the headers 2 and 60 are inserted into the header pipe 2 with the protruding portions of the inner cylindrical fitting portion 36 and the bottomed cylindrical fitting portion 40 of the header pipe 2. Since deformation (expansion deformation or pressure deformation) is performed from the inner side of the pipe 2 and the header pipe 2 is fixed, the header pipe 2 and the liquid receiver 30 can be firmly fixed.

  In the above-described embodiment, when the tubular fitting portions 36 of both the first and second communication portions 34 and 35 are deformed, the header pipe 2 and the liquid receiver 30 (liquid receiver body 31) are fixed. However, at least one of the first and second communicating portions 34, 35 is deformed to fix the header fitting 2 and the receiver 30 (receiver body 31). May be.

  For example, as shown in FIG. 18, the upper cored bar 50 a having the convex portion 51 in the header pipe 2 in a state where the cylindrical fitting portion 36 of the first communication portion 34 is fitted into the refrigerant outflow hole 24. Then, the split-type cored bar 50 including the lower cored bar 50b is inserted, and the convex part 51 is set at a position corresponding to the cylindrical fitting part 36 (see FIG. 18A). Thereafter, the liquid receiver 30 side is fixed by the fixing jig 70 and is pressurized with a press, and the protruding portion in the header pipe 2 is deformed, for example, expanded in diameter, that is, crimped, ie, the header pipe 2 and the receiver main body 31. Are fixed (see FIG. 18B).

  After caulking, the lower cored bar 50b is first slid in the horizontal direction to be removed from the header pipe 2. Thereafter, the upper cored bar 50a with the convex portion 51 is lowered in the space formed in the lower part in the header pipe 2, and the upper cored bar 50a is slid horizontally to be removed outside the header pipe 2 (FIG. 18 ( c)).

  Further, as another fixing method, there is a method in which the cylindrical fitting portion 36 of the liquid receiver 30 and the bottomed cylindrical fitting portion 40 of the positioning joint portion 39 are laterally deformed and fixed in the header pipe 2. is there.

  For example, in order to fix the protruding portion of the cylindrical fitting portion 36 of the liquid receiver 30, first, as shown in FIG. 19A, the core metal 50 is placed at the position of the refrigerant outlet hole 24 of the header pipe 2. The convex part 51 is set.

  Thereafter, as shown in FIG. 19B, the cylindrical fitting portion 36 of the liquid receiver 30 is inserted into the refrigerant outflow hole 24, and the convex portion 51 of the core metal 50 is inserted into the protruding portion of the cylindrical fitting portion 36. Set. Thereafter, as shown in FIG. 19C, the protruding portion of the cylindrical fitting portion 36 is pressurized and deformed and fixed to the header pipe 2 by sliding the core metal 50 in the lateral direction.

  On the other hand, in order to fix the protruding portion of the bottomed tubular fitting portion 40 of the liquid receiver 30, first, as shown in FIG. 20A, a position on the inner side of the positioning hole 26 of the header pipe 2. The convex portion 61 of the cored bar 60 is set on. Thereafter, as shown in FIG. 20B, the bottomed tubular fitting portion 40 of the liquid receiver 30 is inserted into the positioning hole 26 and the bottomed tubular fitting portion 40 protrudes into the header pipe 2. To do. Thereafter, as shown in FIG. 20C, the protruding portion of the bottomed tubular fitting portion 40 is pressure-deformed and fixed to the header pipe 2 by sliding the metal core 60 in the horizontal direction.

  As another fixing method, as shown in FIG. 21, the insertion slit 2a of the flat heat exchange pipe 4 provided in the header pipe 2 is used, and the flat punch 80 is placed in the heat exchange pipe insertion slit 2a. And the protruding portion of the cylindrical fitting portion 36 and the protruding portion of the bottomed cylindrical fitting portion 40 are deformed and fixed.

  In this case, as shown in FIGS. 21A and 21B, first, the liquid receiver 30 and the header pipe 2 are set as described above. Thereafter, as shown in FIGS. 21C and 21D, the header pipe 2 at a position corresponding to the protruding portion of the cylindrical fitting portion 36 and the protruding portion of the bottomed cylindrical fitting portion 40 of the liquid receiver 30. It is fixed to the header pipe 2 by deforming the projecting portion by applying pressure with a punch 80 in a flat shape through the heat exchange tube insertion slit 2a provided on the heat exchanger tube.

  19 and 21, the tubular fitting portion 36 of the first communication portion 34 is deformed to fix the header pipe 2 and the receiver 30 (receiver body 31). Although the case has been described, the cylindrical fitting portion 36 of the second communication portion 35 may be fixed in the same manner.

DESCRIPTION OF SYMBOLS 1 Heat exchanger 2, 3 Header pipe 4 Heat exchange pipe 10 1st header pipe half body 20 2nd header pipe half body 24 Refrigerant inflow hole 25 Refrigerant outflow hole 26 Positioning hole 30 Liquid receiver 34 1st communication Part 35 Second communication part 36 Tubular fitting part 37 Abutting surface 38 Bulging hollow part 39 Positioning joint part 40 Bottomed cylindrical fitting part 41 Abutting surface 42 Bulging hollow part S Gap

Claims (5)

A heat exchanger body comprising a pair of header pipes facing each other and a plurality of heat exchange pipes connecting the header pipes, and being fixed to one header pipe of the pair of header pipes, and the heat exchange A liquid receiver integrated heat exchanger comprising: a liquid receiver that condenses when flowing through the pipe and separates the refrigerant flowing out of the one header pipe and stores the liquid refrigerant;
The liquid receiver is provided with first and second communication portions projecting from a refrigerant outflow hole and a refrigerant inflow hole provided in the one header pipe,
The first and second communicating portions are respectively connected to the refrigerant outflow hole and the refrigerant inflow hole, and a cylindrical fitting portion that can be inserted into the refrigerant outflow hole, and a base end side of the cylindrical fitting portion. And a bulging hollow portion having a contact surface capable of contacting the
The cylindrical fitting portions of the first and second communication portions are inserted into the refrigerant outflow holes and the refrigerant inflow holes, and the protrusions in the header pipe of at least one of the first and second communication portions are inserted. The part is deformed and fixed to the header pipe, and the header pipe and the contact surface are brazed.
A liquid receiver-integrated heat exchanger. The receiver integrated heat exchanger according to claim 1,
The receiver-integrated heat exchanger according to claim 1, wherein the deformation of at least one of the first and second communicating portions is a diameter expansion deformation. In the receiver integrated heat exchanger according to claim 1 or 2,
A positioning hole is provided on the upper side of the one header pipe,
On the upper side of the liquid receiver, a bottomed cylindrical positioning fitting portion whose front end that can be inserted into the positioning hole is closed, and a base end side of the positioning fitting portion, and Protruding a positioning joint composed of a bulging hollow portion having a contact surface capable of contacting the side surface of the header pipe,
The bottomed cylindrical fitting part of the positioning joint is inserted into the positioning hole, the protruding part in the header pipe is deformed and fixed to the header pipe, and the header pipe and the contact surface are brazed. Become
A liquid receiver-integrated heat exchanger. In the receiver integrated heat exchanger according to claim 3,
The receiver-integrated heat exchanger according to claim 1, wherein the bottomed cylindrical fitting portion of the positioning joint is deformed by pressure. In the receiver integrated heat exchanger according to any one of claims 1 to 4,
The header pipe is formed of first and second header pipe halves that are divided in a radial direction, and the first and second header pipe halves are brazed and joined together. Liquid receiver integrated heat exchanger.

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