JPH0640684U - Heat exchanger - Google Patents

Abstract

(57) [Summary] (Correction) [Purpose] No special jig is required when assembling the partition plate into the two-part type header tank, and the assembly is easy and the cost is reduced. [Structure] A plurality of tubes 2 and fins are alternately laminated, and a header tank 4 is provided at both ends of the laminated tubes.
Are connected in communication with each other, a partition plate 11 is arranged in each header tank, and the header tank is divided into two in the radial direction. The parallel flow type heat exchanger is composed of an end plate 7 and a tank plate 8. The insertion holes 14 and 15 are provided in both the end plate and the tank plate, respectively, and the partition plates are fitted with the insertion holes 12 and 13 and project outward, and the end plates or Locking part 1 that locks to the tank plate from the outside
6 and 17 are provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a parallel flow type heat exchanger that facilitates the assembly work of a header tank composed of an end plate and a tank plate that are divided into two in the radial direction.

[0002]

[Prior art]

 Conventionally, in a parallel flow type heat exchanger, a plurality of tubes and fins are alternately laminated, and header tanks are connected in communication with both ends of the laminated tubes. The upper and lower openings of each of these header tanks are closed by blind caps, so that the heat exchange medium meanders multiple times between the inlet joint and the outlet joint provided in the header tank, and the required portions of the header tank above. A partition plate for partitioning the inside of the header tank is provided in the above (Actual Kaihei No. 4-63982).

Further, conventionally, the header tank includes a round pipe type and a two-part type including an end plate and a tank plate which are assembled in a radial direction with each other. And when assembling the partition plate, in the case of the above-mentioned round pipe type, it is brazed by inserting it from the back side of the tank through the partition plate insertion hole provided in the header tank. Was sandwiched between the end plate and the tank plate, and the claws provided at the joint portion of the tank plate were caulked to the end plate for positioning, and integrated brazing was performed (Japanese Utility Model Application No. 1-1141679). ).

[0004]

[Problems to be solved by the device]

 However, in the heat exchanger composed of the above-mentioned two-divided type header tank, the partition plate is positioned by caulking the claws provided on the tank plate, so it is necessary to cut the claws to form the claws. There was a problem that extra raw materials including parts were needed, the cost increased and the work of crimping the nails was required.

Further, there is a problem that a special jig is required when the crimping with the nail is not performed, and the assembling work is troublesome. Furthermore, in the case of a two-part type header tank, the end plate and the tank plate are not properly fitted in the part where the partition plate is inserted, and in the worst case, they do not braze well and cause refrigerant leakage. May occur.

Therefore, in the present invention, when a header tank of a two-division type is used, a special jig is not required at the time of assembling the partition plate, the assembly can be easily performed, and the heat exchange can be achieved at a reduced cost. The purpose is to provide a vessel.

[0007]

[Means for Solving the Problems]

 In the heat exchanger of the present invention, a plurality of tubes and fins are alternately laminated, a header tank is connected to both ends of the laminated tubes, and a partition plate is arranged in each header tank. A parallel flow type heat exchanger in which a header tank is composed of an end plate and a tank plate that are divided into two in the radial direction, and insertion holes are provided in both of the above end plate and tank plate. The partition plate is provided with an insertion portion that fits into each of the insertion holes and projects outward, and a locking portion that is provided in the insertion portion and that locks from the outside to the outer surface of the end plate or tank plate. .

[0008]

[Action]

 Therefore, when assembling the partition plate into the header tank, insert each partition insertion part into the end plate or tank plate insertion hole, and the partition plate locking part will be locked to the outer surface of the end plate or tank plate. However, this makes it possible to position both the end plate and the tank plate with respect to each other and the partition plate itself. As a result, the claws used in the past are not required, and the cost can be reduced, and since the claws are not used for caulking, no special jig is required, and the assembling work is not troublesome. Further, in the portion where the partition plate is arranged, the end plate and the tank plate are securely fitted, and reliable brazing can be expected.

[0009]

【Example】

 A first embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a front view of a heat exchanger 1 of the present embodiment. In this heat exchanger 1, a plurality of flat tubes 2 and wavy fins 3 are alternately laminated, and both ends of the laminated flat tubes 2 are stacked. The header tanks 4 are connected to each other, and the upper and lower openings of each header tank 4 are closed by a blind cap 5. Reference numeral 6 denotes side plates having a U-shaped cross section disposed on the upper end side and the lower end side of the laminated flat tubes 2.

As shown in FIG. 2, the header tank 4 is of a two-part type including an end plate 7 and a tank plate 8 that are fitted to each other in the radial direction. The tank plate 8 is provided with a joint portion 8a that fits into the 7a. As shown in FIG. 1, an inlet joint 9 is connected to one header tank 4 and an outlet joint 10 is connected to the other header tank 4. Then, the heat exchange medium is made to meander a plurality of times between the inlet joint 9 and the outlet joint 10 by the partition plates 11 provided at the required positions in both header tanks 4.

As shown in FIG. 2, the partition plate 11 is formed in a shape and area capable of closing the header tank 4, and in the case of this example, an insertion portion 12 protruding in three directions on the same plane, 13 is integrally provided. These insertion portions 12 and 13 are formed with a predetermined width and a projecting dimension larger than the wall thickness of the header tank 4.

Further, the partition plate 11 is arranged such that, when mounted on the header tank 4, one insertion portion 12 is positioned on the end plate 7 side and the other insertion portion 13 is positioned on the tank plate 8 side. It Therefore, insertion holes 14 and 15 into which the insertion portions 12 and 13 are inserted are provided at the respective positions of the end plate 7 and the tank plate 8 corresponding to the insertion portions 12 and 13. These insertion holes 14 and 15 are formed by the thickness of the partition plate 11 and the width of the respective insertion portions 12 and 13. Further, as shown in FIG. 3, on one surface of each of the insertion portions 12 and 13 and at a position outside the wall thickness of the header tank 4, the outer surface of the end plate 7 or the tank plate 8 is provided. Locking portions 16 and 17 for locking are provided one by one. These locking portions 16 and 17 are composed of locking projections protruding in a direction along the longitudinal direction of the header tank 4, and are formed on the inclined surface from the apex of the locking projections toward the outside. ing. Then, such a partition plate 11 is formed by press working, and the locking protrusions forming the insertion portions 12 and 13 and the locking portions 16 and 17 are integrally molded.

When the partition plate 11 as described above is assembled to the header tank 4, the insertion portion 12 is locked by inserting the tip of the insertion portion 12 into the insertion hole 14 of the end plate 7 and pressing the insertion portion 12. The projection passes through the insertion hole 14 and is locked to the outer surface of the end plate 7, and the partition plate 11 is assembled to the end plate 7. After that, by inserting each insertion hole 15 of the tank plate 8 into the insertion portion 13 of the partition plate 11 and pushing the tank plate 8 toward the end plate 7, the locking projection of the insertion portion 13 passes through the insertion hole 15. And the end plate 7 is assembled to the partition plate 11, and the joint portion 7a of the end plate 7 is fitted with the joint portion 8a of the tank plate 8.

Therefore, when assembling the partition plate to the header tank, simply inserting the respective insertion portions of the partition plate into the insertion holes of the end plate or the tank plate allows the locking projections of the partition plate to be attached to the end plate or the tank plate. By locking on the outer peripheral surface, both the end plate and the tank plate can be positioned relative to each other, and the partition plate itself can be positioned. As a result, the claws of the tank plate that have been used conventionally are not required, and the cost can be reduced, and since the claws are not used for caulking, no special jig is required and the assembling work becomes easy. Further, in the part where the partition plate is inserted, the end plate and the tank plate are securely fitted together, which enables reliable brazing.

Next, a second embodiment of the present invention will be described. As shown in FIG. 4, in the heat exchanger of this embodiment, the insertion portion 13 of the partition plate 11 that is inserted into the tank plate 8 is formed wide, and the engagement protrusions that are the engagement portions 17 are formed in the insertion portion 13. Two are provided. The insert portion 12 on the end plate side is the same as in the previous example, and this insert portion 12 is provided with one locking projection. Further, the insertion portion 12 on the end plate 7 side and the insertion portion 13 on the tank plate 8 side are provided at positions on the center line of the flat tube 2 and have the same effect as described above.

Next, a third embodiment of the present invention will be described. In the heat exchanger of this embodiment, as shown in FIG. 5, the insertion portions 12 and 13 of the partition plate 11 are formed wide and the insertion protrusions 12 and 13 are provided with the engagement protrusions 16 and 17, respectively. Two of them are provided, and the assembly can be made more reliable.

Next, a fourth embodiment of the present invention will be described. In the heat exchanger of this embodiment, as shown in FIGS. 6 and 7, the partition plate 11 has the plate-like engaging portion 17 on the tank plate 8 side. That is, the plate-shaped locking portion 17 is attached to the end surface of the insertion portion 13 projecting from the wall portion of the tank plate 8. The locking portion 17 has a predetermined width and is formed to curve along the peripheral surface of the tank plate 8. Further, the insertion hole 15 of the tank plate 8 has a size into which the partition plate 11 can be inserted.

In order to assemble such a partition plate 17 into the header tank 4, the partition plate 11 is first inserted into the insertion hole 15 of the tank plate 8, and the insertion portion 13 of the partition plate 11 is inserted into the insertion hole 15. After fitting, the insertion portion 12 is inserted into the insertion hole 14 of the end plate 7 while fitting the joint portions 7a, 8a of both the end plate 7 and the tank plate 8 and assembled. The plate-shaped engaging portion 17 may be integrally formed by press working, or may be provided not on the tank plate side but on the end plate side.

Further, a fifth embodiment of the present invention will be described. In this embodiment, as shown in FIGS. 8 and 9, the locking portions 16 and 17 provided on the respective insertion portions 12 and 13 of the partition plate 11 are constituted by locking protrusions protruding in the circumferential direction. . These locking protrusions 16 and 17 are formed so as to slightly spread in a wedge shape from the distal end side of the insertion portions 12 and 13 to the proximal end side, and are integrally formed by press molding. Then, the insertion portions 12 and 13 are inserted into the insertion holes 14 and 15 and locked to the outer surface of the header tank 4 at the base end side, and the same effect as that of each of the above-described embodiments is obtained.

[0020]

[Effect of device]

 As described above, according to the present invention, when assembling the partition plate into the header tank, when the respective insertion parts of the partition plate are inserted into the insertion holes of the end plate or the tank plate, the locking part of the partition plate is And the outer peripheral surface of the tank plate, whereby both the end plate and the tank plate can be positioned relative to each other and the partition plate itself can be positioned. As a result, the claw of the tank plate that has been used in the past is not required, and the cost can be reduced. In addition, since the claw is not used for caulking, no special jig is required, and the assembling work is not troublesome. Furthermore, in the portion where the partition plate is inserted, the end plate and the tank plate are securely fitted, and reliable brazing can be expected.

[Brief description of drawings]

FIG. 1 is a front view of a heat exchanger according to a first embodiment of the present invention.

FIG. 2 is a sectional view taken along the line II-II in FIG. 1, showing a partition plate.

FIG. 3 is a sectional view taken along the line III-III in FIG. 2 showing an assembling state of the partition plate.

FIG. 4 is a plan view of a partition plate according to the second embodiment of the present invention.

FIG. 5 is a perspective view of a partition plate according to the third embodiment of the present invention.

FIG. 6 is a perspective view of a partition plate according to a fourth embodiment of the present invention.

FIG. 7 is a plan view showing a partition plate when assembled.

FIG. 8 is a plan view showing a partition plate when assembled according to a fifth embodiment of the present invention.

FIG. 9 is an enlarged plan view of a locking portion.

[Explanation of symbols]

 1 heat exchanger 2 tube 3 fin 4 header tank 7 end plate 7a joint part 8 tank plate 8a joint part 11 partition plate 12, 13 insertion part 14, 15 insertion hole 16, 17 locking part

Claims (1)

[Scope of utility model registration request] 1. A plurality of tubes and fins are alternately laminated, a header tank is communicatively connected to both ends of these laminated tubes, a partition plate is disposed in each header tank, and the header tank is arranged in a radial direction. In a parallel flow type heat exchanger composed of an end plate and a tank plate that are divided into two, insertion holes are provided in both the end plate and the tank plate, and the insertion holes are provided in the partition plate. A heat exchanger, comprising: an insertion portion that is fitted into the housing and projects outward; and a locking portion that is provided in the insertion portion and that locks from the outside on the outer surface of the end plate or the tank plate.