JPH04292791A - Method and apparatus for assembling laminated type heat exchanger - Google Patents

Abstract

PURPOSE:To shorten a working time by realizing automation of laminating to assemble a tube and a corrugated fin. CONSTITUTION:In order to insert a first spacer 73 into a gap of adjacent tubes 2 of an assembly body by a gap enlarging tool 7 and to further replace a corrugated fin 51 disposed on a fin arranging tool 9 by a fin inserting tool 8 through a second spacer 83 with the spacer 73 to be inserted into the gap, automation of laminating work to assembly the tube 1 and the fin 5 is realized by an assembling work.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for assembling a laminated heat exchanger used in refrigeration equipment and the like.

0002

2. Description of the Related Art An example of a stacked heat exchanger is shown in FIGS. 4 and 5.

[0003] In FIGS. 4 and 5, reference numeral 1 denotes a flat tube, which is formed by combining two core plates 1a and 1b formed from aluminum plates and joining them together by brazing. 2 are core plates 1a and 1b
A bulging tank part attached to one longitudinal end of the
A heat transfer medium flows into and out of the tube 1, and an inlet pipe 3 and an outlet pipe 4 through which the heat transfer medium enters and exits are connected to the tank portion 2. 5 is a corrugated fin interposed between adjacent tubes 1, and 6 is a side plate covering the outermost corrugated fin 5.

[0004] Conventionally, the above laminated heat exchanger was assembled as follows. That is, a pair of core plates 1a and 1b coated with a brazing material are overlapped with inner fins (not shown) inserted therein, and temporarily joined by caulking or the like to produce the tube 1.

Next, the side plate 6 coated with a brazing material is placed at the lower end, the corrugated fins 5 and the temporarily joined tubes 1 are alternately stacked, and the side plate 6 is placed at the upper end. Subsequently, the inlet pipe 3 and the outlet pipe 4 are assembled, held by a jig (not shown), carried into a furnace, and heated to a brazing temperature to be brazed and joined together.

[0006]

[Problems to be Solved by the Invention] In assembling a conventional laminated heat exchanger, temporarily joined tubes and corrugated fins are alternately arranged and laminated, which takes a lot of time and effort. Due to the complexity of the work, it was not possible to automate the stacking assembly of tubes and corrugated fins.

SUMMARY OF THE INVENTION In view of the above-mentioned circumstances, it is an object of the present invention to provide a method for facilitating the lamination assembly of tubes and corrugated fins, and an assembly apparatus for realizing automation of this lamination assembly.

[0008]

[Means for Solving the Problems] (1) In the method for assembling a laminated heat exchanger of the present invention, a tube formed by joining a pair of molded core plates and corrugated fins are alternately assembled. In the method for assembling a laminated heat exchanger configured by laminating, tubes formed by temporarily joining the pair of core plates are laminated in required stages, and each gap between the adjacent tubes of the laminated assembly is The corrugated fin is expanded by inserting a spacer of a predetermined thickness, and the corrugated fin is inserted into the gap to replace the spacer by pressing the corrugated fin.

(2) The laminated heat exchanger assembly apparatus of the present invention is a laminated type heat exchanger constructed by laminating a tube formed by joining a pair of molded core plates and corrugated fins. In a heat exchanger assembly device; a first spacer arranged in multiple stages in a first case and having a predetermined thickness, a first shaft, and a first spacer that is driven as the first shaft rotates. a first cam that sequentially presses each of the first spacers by pressing each of the first spacers, and a gap between the adjacent tubes of an assembly in which tubes formed by temporarily joining the pair of core plates are stacked in a required number of stages. within said first
a gap expander for sequentially inserting the first spacer from the lower stage to the upper stage of the case; a second spacer arranged in plural stages in the second case; and a second shaft;
a second cam that presses each of the second spacers by being driven in accordance with the rotation of the second shaft; The present invention is characterized by comprising a fin-interposed device which is inserted into the gap between the adjacent tubes of the assembly by pressing with a spacer to replace the first spacer.

0010

[Operation] In the above invention (1), the height of the corrugated fin is increased by inserting a spacer into each gap between adjacent tubes in an assembly in which tubes formed by temporarily joining a pair of core plates are laminated in required stages. Extended beyond the specified size. As a result, the corrugated fins are pressed and the spacers are pushed out from each gap to replace the spacers, and as a result, the corrugated fins are interposed in each gap, and the tubes and corrugated fins are alternately stacked.

[0011] As a result of the above, automation of the lamination assembly of tubes and corrugated fins has been realized, and it has become possible to shorten the working time of the lamination assembly work.

In the above invention (2), by rotating the first shaft of the gap expander, the first spacer is inserted into each of the adjacent tubes of the assembly via the first cam driven by the first shaft. Inserted into the gap, said gap is expanded. Subsequently, by rotating the second shaft of the fin interposition tool, the second spacer is pressed via the second cam driven by this, and further pressed by this second spacer, the fin alignment tool The corrugated fins within push out the first spacer from within each gap of the assembly, and the corrugated fin is interposed in the gap replacing the first spacer.

As described above, since the tube and the corrugated fin can be easily stacked and assembled using the assembly device consisting of the gap expander and the fin intervening device,
This assembly can be automated.

[0014]

[Embodiment] An assembly apparatus for a stacked heat exchanger according to an embodiment of the present invention will be explained with reference to FIG. The present embodiment shown in FIG. 1 consists of a fin aligner 9 in which a plurality of corrugated fins 5 are arranged vertically, and an assembly 1 in which a plurality of tubes 1 are arranged vertically.
0 and a base 71 arranged adjacent to each other on the top thereof,
A first case 72, a first spacer 73, a first shaft 74, a threaded part 75,
A gap expander 7 provided with an arm 76, a first cam 77, and a fixing member 78, and a second case 82, a second spacer 83, a second
The fin interposition device 8 is provided with a shaft 84, a threaded portion 85, an arm 86, and a second cam 87.

In the above, a plurality of flat plate-shaped first spacers 73 are arranged at a predetermined pitch in a first case 72 forming the gap expander 7 and disposed on a base 71. . The first spacer 73 has a thickness greater than the height of the corrugated fin 5, and one end 73a thereof is formed into a tapered shape so that the first spacer 73 is inserted into the gap between adjacent tubes 1 of the assembly 10. It's getting easier.

A first shaft 74 extends through the base 71 on one side of the first case 72 . This first shaft 74 is provided with a threaded portion 75, and when it is rotated once via an arm 76, it moves upward or downward by the same distance as the pitch between the first spacers 73. . In addition, a disk-shaped first cam 77 is fixed to the first shaft 74 so as to be eccentric from the axis, and is driven as the first shaft 74 rotates, starting from the lower side. The first spacers 73 are sequentially pressed toward the upper stage to push them outward toward the other surface of the first case 72. The fixing member 78 is movable in the vertical direction, and is adapted to fix the assembly 10 by lightly pressing it from its upper surface. Note that fixing members that fix both sides of the assembly 10 may also be provided.

[0017] Also, a second case 71, which forms the fin interposition device 8 and is disposed on the base 71 so as to face the first case 72, is provided.
Inside the case 82, a plurality of flat second spacers 83 are arranged at a predetermined pitch (same as the first spacers 73). A second shaft 84 extends through the base 71 on one side of the second case 82 . This second shaft 84 is provided with a threaded portion 85, and when rotated once through an arm 86, the second shaft 84
moves upward or downward by the same distance as the pitch between the second spacers 83.

A disk-shaped second cam 87 is fixed to the second shaft 84 so as to be eccentric with respect to the axis thereof, and is driven as the second shaft 84 rotates. The second spacers 83 are sequentially pressed toward the lower stage and pushed outward toward the other surface of the second case 82.

It should be noted that the same number of second cams as the second spacers 83 may be fixed to the second shaft 84. In this case, the second cam simultaneously controls the entire number of second spacers 83. The other side of the case 82 is pushed outward.

Inside the fin alignment tool 9 disposed close to the other side of the fin interposition device 8, corrugated fins 5 of a required stage are arranged at the same pitch as the gap between adjacent tubes 1 of the assembly 10. Storage is arranged.

Next, a method for assembling a stacked heat exchanger using this embodiment will be explained with reference to FIGS. 2 to 5.

First, a tube 1 is produced in which two core plates 1a and 1b coated with a brazing material are overlapped with inner fins (not shown) inserted therein and temporarily joined by caulking or the like. Next, the side plate 6 coated with brazing material is placed at the lower end, and the tubes 1 are stacked on top of this in the required stages, and the side plate 6 covered with brazing material is assembled to the uppermost end to complete the assembly 1.
0, this is placed on a foundation 11 placed between the gap expander 7 and the fin aligner 9, and further fixed with a fixing member 78 to the extent that it does not lose its shape.

Thereafter, when the first shaft 74 is rotated via the arm 76 of the gap expander 7, the first cam 77 is rotated, and the first cam 77 at the lowest stage in the first case 72 is rotated. The spacer 73 is pushed out by the first cam 77 and inserted into the gap between the side plate 6 at the lower end of the assembly 10 and the tube 1 above it.

Subsequently, as the first cam 77 moves from the bottom to the top as the first shaft 74 rotates, the first spacer 73 in the first case 72 sequentially moves up and down the assembly 10. The tube 1 is inserted into each gap between adjacent tubes 1, and finally into the gap between the tube 1 and the side plate 6 at the upper end. In this way, the first spacers 73 having a predetermined thickness are inserted into the gaps between the tubes 1 and between the tubes 1 and the side plates 6, and the gaps are expanded to a height greater than the height of the corrugated fins 5.

Next, when the second shaft 84 is rotated via the arm 86 of the fin interposition device 8, the second cam 87 is rotated, and the uppermost stage in the second case 82 is rotated. The second spacer 83 is pressed by the second cam 87 and pushes out the uppermost corrugated fin 5 in the fin aligner 9. Then, this corrugated fin 5 pushes out the first spacer 73 from within the gap between the side plate 6 at the upper end of the assembly 10 and the tube 1 below it, and the corrugated fin 5 replaces this first spacer 73. It is inserted into the gap.

Subsequently, as the second cam 87 moves from above to below as the second shaft 84 rotates, the second spacer 83 pressed by the second cam 87
The corrugated fins 5 in the fin aligner 9 sequentially push out the first spacers 73 from the gap between the upper and lower adjacent tubes 1 of the assembly 10 and from the gap between the tube 1 and the side plate 6 at the lower end. , these first spacers 7
3, a corrugated fin 5 is interposed in each gap. Thus, there are corrugated fins 5 within the entire gap of the assembly.
are interposed, and tubes 1 and corrugated fins 5 are alternately stacked between side plates 6 at the upper and lower ends.

Note that when the corrugated fins 5 are inserted into each gap, the first spacer 73 is housed in the first case 72.

Next, the inlet pipe 3 and the outlet pipe 4 are assembled into the assembly 10, held by a jig (not shown), carried into a furnace, and heated to a brazing temperature to be brazed together. urge

[0029] As described above, the gap between the stacked tubes of the assembly is expanded by the gap expander, and the corrugated fin is inserted into the gap by the fin intervening device, thereby realizing automation of the stacked assembly of tubes and corrugated fins. This made it possible to shorten the work time for lamination assembly work.

[0030]

Effects of the Invention In the method and apparatus for assembling a laminated heat exchanger of the present invention, the gap between adjacent tubes in an assembly in which tubes formed by temporarily joining a pair of core plates are stacked in a required number of stages is provided by a spacer. Since the tube is inserted and expanded, the corrugated fin can be easily inserted into the gap by replacing the spacer with the corrugated fin, thereby shortening the working time for stacking and assembling the tube and the corrugated fin.

[0031] Also, a first spacer is inserted into the gap between adjacent tubes of the above assembly by a gap expander, and a corrugated fin placed on the fin alignment tool is inserted by a fin intervening device via a second spacer. is inserted in the gap in place of the first spacer, so the assembly device consisting of the gap expander and the fin intervening device can automate the stacking and assembly of the tube and corrugated fin.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram of an assembly device according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram of the process of inserting a spacer using the gap insertion tool of the above embodiment.

FIG. 3 is an explanatory diagram of a corrugated fin interposition process using the fin interposition device of the above embodiment.

FIG. 4 is a front view of the stacked heat exchanger.

FIG. 5 is a side view of the laminated heat exchanger.

[Explanation of symbols]

1 Tubes 1a, 1b Core plate 5 Corrugated fin 7
Gap expansion device 8 Fin interposition device 9 Fin alignment device 10 Assembly 72 First case 73 First spacer 74 First shaft 75 Threaded portion 76 Arm 77 First cam 82 Second case 83 Second spacer 84 Second shaft 85 Threaded portion 86 Arm 87 Second cam

Claims (2)

[Claims] 1. A method for assembling a laminated heat exchanger in which a tube formed by joining a pair of molded core plates and corrugated fins are alternately laminated, wherein the pair of core plates By stacking the required number of tubes formed by temporarily joining plates, expanding each gap between the adjacent tubes in this stacked assembly by inserting a spacer of a predetermined thickness, and pressing the corrugated fins. A method for assembling a laminated heat exchanger, comprising interposing the spacer in place of the spacer in the gap. 2. In an assembly apparatus for a laminated heat exchanger comprising a tube formed by joining a pair of molded core plates and corrugated fins, which are alternately laminated; a first case; a first spacer arranged in multiple stages and having a predetermined thickness; a first shaft;
a first cam that sequentially presses the first spacer by being driven as the shaft rotates, and an assembly in which tubes formed by temporarily joining the pair of core plates are stacked in required stages. The first tubes are sequentially placed in the gap between the adjacent tubes from the bottom to the top of the first case.
a gap expander for inserting a spacer; a second spacer arranged in multiple stages in a second case; a second shaft; a second cam that presses each second spacer, and the second spacer presses the corrugated fins arranged at a required stage in the fin aligner, thereby creating a gap between the adjacent tubes of the assembly. 1. An assembly device for a laminated heat exchanger, comprising a fin intervening device inserted therein to replace the first spacer.