JP2003080332A - Device and method for manufacturing heat exchanger - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device and a method for manufacturing a heat exchanger which enable the fin deformation correcting work to be reduced and the heat- exchanging performance to be improved. SOLUTION: The heat exchanger with heat radiation tubes 2 inserted in holes 1c of fins comprises a blade 4 for cutting an L-shaped cut-in part by connecting one end of a longitudinal slit part 1b formed in the fins to a fin end face part, and a fin erection fixture 5 for pressing the inside of the L-shaped cut-in part of the fin, and a fin louvered part 6 is formed on at least one of the fin on the upstream or downstream side end part of the air flow.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat exchanger manufacturing apparatus and a manufacturing method thereof.

[0002]

2. Description of the Related Art FIG. 5 is a partial schematic view of a conventional heat exchanger manufacturing apparatus, in which 1 is a fin of a heat exchanger, and the fin 1 is L-shaped in advance by a press machine or the like. The notch 1a is punched so as to be connected to one end surface of the fin 1. Reference numeral 2 denotes a hairpin-shaped heat radiating pipe formed by bending a copper pipe into a U shape, 11 denotes an aligning jig for aligning the fins 1, and 12 denotes a fin inserted in a hole of the aligning jig 11. A cut-and-raised bar that raises the L-shaped cut portion 1a of 1 and a cut-and-raised portion of the fin 1 that is cut and raised by this cut-and-raised rod.

Next, the operation of this conventional heat exchanger manufacturing apparatus will be described with reference to FIGS. First, as shown in FIG. 5B, after inserting the fins 1 shown in FIG. 5A in which L-shaped notches are previously provided into the alignment jig 11, as shown in FIG. 5B, Next, as shown in FIG. 5C, the hairpin-shaped heat dissipation pipe 2 is inserted into the fin hole 1c. After this insertion, as shown in FIG. 5D, the cut-and-raised rod 12 is inserted into a predetermined hole of the alignment jig 11 where the L-shaped cut portion of the fin 1 is located, and the L-shaped fin of the fin 1 is inserted. The character notch is cut and raised as shown in FIG. 5E to complete the heat exchanger, and the heat exchanger is removed from the alignment jig 11.

Since the cut-and-raised portion of the fin 1 cut and raised by this process disturbs the air passing through the heat exchanger, this disturbing action causes the surface heat transfer of the heat exchanger, particularly the surface of the fin 1. The improved heat transfer results in improved heat exchange performance of the heat exchanger.

[0005]

In the conventional method and apparatus for manufacturing a heat exchanger as described above, the L-shaped cut portion connected to the end face portion of the fin 1 before the fin 1 is inserted into the alignment jig 11. Since there is a cut, the strength decreases due to the cut portion, and the L-shaped cut portion is deformed at the time of material handling, when inserting the fin into the alignment jig, or when inserting the heat dissipation tube, so the deformation correction work of the fin 1 There was a problem that I had to

Further, if the number of cuts is increased, the strength is lowered and the fins 1 are more easily deformed, and the number of cuts cannot be increased. Therefore, the heat exchange performance of the heat exchanger is improved. There was also a problem that I could not do it. Also,
There is also a problem that the timing of inserting the heat radiation pipe into the fin is also restricted.

The present invention has been made in order to solve the above-mentioned problems, and there is little fin deformation correction work, and a heat exchanger manufacturing apparatus capable of improving the heat exchange performance of the heat exchanger, and The purpose is to obtain a manufacturing method.

It is another object of the present invention to obtain a heat exchanger manufacturing apparatus and manufacturing method which can change the heat exchange performance of the heat exchanger without restricting the insertion timing of the heat radiating pipe and have a high degree of freedom in processing.

[0009]

In the heat exchanger manufacturing apparatus and method according to the present invention, in the heat exchanger formed by inserting the heat radiation pipe into the hole of the fin, the heat exchanger is provided in advance on the fin. A blade that connects one end of the vertical slit portion and the fin end face portion to cut so as to form an L-shaped cut portion, and a fin that presses the inside of the L-shaped cut portion formed by cutting the blade. A raising jig is provided, and a cut and raised portion of the fin is formed on at least one of the upstream side and the downstream side end of the air flow of the fin.

Further, in a heat exchanger formed by inserting a radiating pipe into a hole of a fin, a blade for cutting at a predetermined interval from an end surface of the fin to a predetermined position, and the fin during the cutting of the blade. And a fin raising jig for pushing the fin, and a fin raising portion is formed at at least one of an upstream side end portion and a downstream end portion of the wind flow of the fin.

Further, when the fin raising jig pushes the fins, the pushing direction is alternately changed in the row or step direction of the heat exchanger.

Further, the blade and the fin raising jig are
The fins are integrated by cutting and then pushing.

Further, when the fin raising jig pushes the fin, the pushing force can be varied.

Further, in the heat exchanger formed by inserting the heat radiation pipe into the hole of the fin, one end of the vertical slit portion previously provided in the fin and the end surface portion of the fin are connected to each other to form L.
A step of cutting so that a V-shaped notch can be made,
Pressing the inside of the L-shaped cut portion of the fin, and forming the cut and raised portion of the fin at at least one of the upstream side and the downstream side end of the wind flow of the fin. is there.

Further, in the heat exchanger formed by inserting the heat radiation pipe into the hole of the fin, the step of cutting from the end face of the fin to a predetermined position at a predetermined interval, and pressing the fin during the cutting. And a step of forming a cut-and-raised portion of the fin on at least one of an upstream side end portion and a downstream end portion of the wind flow of the fin.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiment 1. FIG. 1 shows a heat exchanger manufacturing apparatus according to Embodiment 1 of the present invention. In this figure, 1 is a fin made by pressing an aluminum thin plate, 1b is a slit portion provided in the fin 1,
2 is a hairpin-shaped heat radiating pipe made by bending an aluminum or copper pipe into a U shape. 3 is a comb-shaped fin fixing jig for fixing a heat exchanger. 4 is a blade for cutting the fin. Toys, 6
Is a cut and raised portion of the fin 1 cut and raised by this fin raising jig.

Next, the operation of the heat exchanger manufacturing apparatus thus configured will be described with reference to FIGS. 1 (a) to 1 (e). First, the vertical slit portion 1b shown in FIG.
As shown in FIG. 1B, the heat exchanger in which the hairpin-shaped heat dissipation pipe is inserted into the fin hole 1c of the fin 1 having the Insert from and fix. At this time, the hairpin-shaped heat radiating tube 2 is positioned with the comb teeth of the fin fixture 3 interposed therebetween as shown in the figure.

Next, in this fixed state, as shown in FIG. 1 (c), the blade 4 located at one end of the vertical slit portion 1b provided on the fin 1 slides while the vertical slit 1b slides. Part of the fin 1 is cut so that one end of the portion 1b and the end face portion of the fin 1 are connected to each other to form an L-shaped cut portion in the fin.

Next, the fin raising jig 5 is moved to the position shown in FIG.
As shown in Fig. 1, while sliding inside the L-shaped cut portion of the fin 1 that is cut by the blade 4 and becomes L-shaped,
After raising a part of the fins to form the cut-and-raised portions 6 of the fins 1, that is, after forming the end faces of the fins 1 so as to face the flow of wind, as shown in (e) of FIG. The heat exchanger including the fins 1 is removed from the fin fixing jig 3, the work is completed, and the above-described operation is repeated again.

As described above, since there is no cut portion connected to the end surface of the fin, the strength of the end surface of the fin increases, and the external force during material handling and manufacturing increases, so that the processing flexibility during manufacturing improves. However, it is possible to obtain a heat exchanger manufacturing apparatus with a small amount of fin bending correction work. Further, since the end surface of the cut-and-raised portion 6 is directed to the flow of the wind, the flow of the wind passing through the heat exchanger is disturbed, so that a heat exchanger manufacturing apparatus with improved heat exchanger performance is provided. can get.

In the first embodiment, the fin raising jigs 5 are all slid in the same direction, but the sliding direction of the fin raising jigs 5 may be alternately changed in the row or step direction. By doing so, as shown in FIG. 2, since the fins of the cut-and-raised portion 6 can be alternately oriented in the opposite direction with respect to the fin 1, a heat exchanger manufacturing apparatus capable of further varying the heat exchanger performance is provided. can get.

In the first embodiment, as shown in FIG. 3, the blade 4 and the fin raising jig 5 are integrated so that the fin 1 is cut by the blade 4 and then the L-shaped cutting fin is cut. 1
When the fin is raised and cut and raised by the jig 5, the cut and raised portion 6 of the heat exchanger is formed by sliding the blade 4 and the fin raising jig 5 only once, and a heat exchanger can be formed. As a result, a heat exchanger manufacturing apparatus for manufacturing a heat exchanger having excellent heat exchanger performance can be obtained in a short processing time.

Further, in the first embodiment, the area where the fin raising jig 5 contacts the fin 1, that is, the height (thickness) and the length (width) of the fin raising jig 5 are changed. If the pressing force is changed or the pressing force itself is changed to change the angle of the cut-and-raised portion 6 of the fin, the fin angle of the cut-and-raised portion 6 of the fin can be freely adjusted. Since it becomes possible to change the turbulence of the air flow of the passing air, which is closely related to the exchanger performance, it is possible to obtain a heat exchanger manufacturing apparatus capable of varying the heat exchanger performance.

Embodiment 2. In the second embodiment, as shown in FIG. 4, the fin 1 of the first embodiment is not provided with the slit portion 1b, and the blades 4 are simply provided at predetermined intervals.
The blades 4 provided are slid to cut from the end of the fin 1 to a predetermined length, and the fin 1 between the cuts is cut and raised by the fin raising jig 5, and the cut and raised portion 6 winds. It is intended for the flow of. Since the other configurations and operations are almost the same as those of the first embodiment, detailed description will be omitted.

As described above, since the heat exchanger is manufactured without providing the slit portion 1b, the strength of the fin end face is further increased and the external force during material handling and manufacturing is increased.
It is possible to obtain a heat exchanger manufacturing apparatus in which bending of fins is unlikely to occur and the degree of freedom in processing during manufacturing processing is increased. Further, since the cut-and-raised part 6 is directed to the flow of the wind, the flow of the wind passing through the heat exchanger is significantly disturbed, so that the heat exchanger manufacturing apparatus with further improved heat exchanger performance. Is obtained.

In the second embodiment, as described above, almost the same as in the first embodiment, the pressing force of the fin raising jig 5 for pressing the cut surface of the fin 1 is changed or the blade 4 is pressed. Almost the same effect can be obtained by alternately changing the sliding direction of the fin raising jig 5 and the row / step direction, or by integrating the blade 4 and the fin raising jig 5 at a predetermined interval. Is
Needless to say.

[0027]

Since the present invention is constructed as described above, it has the following effects.

According to the present invention, in the heat exchanger formed by inserting the heat radiation pipe into the hole of the fin, one end of the vertical slit portion previously provided in the fin and the fin end surface portion are connected to each other to form an L-shape. A blade for cutting so that a cut portion of the mold is formed, and a fin raising jig for pushing the inside of the cut portion of the L-shape formed by the cutting of the blade are provided, and an upstream of a wind flow of the fin or Since the fin cut-and-raised portion is formed on at least one of the downstream side end portions,
It is possible to obtain a heat exchanger manufacturing apparatus capable of improving the heat exchange performance of the heat exchanger with a small amount of fin deformation correction work, a high degree of processing freedom.

Further, in the heat exchanger formed by inserting the heat radiation pipe into the hole of the fin, a blade for cutting at a predetermined interval from the end face of the fin to a predetermined position, and the fin during the cutting by the blade. Since the fin raising jig for pressing the fin is provided, and the cut and raised portion of the fin is formed at at least one of the upstream side and the downstream side end of the wind flow of the fin, the strength of the fin end face portion is further improved. Furthermore, since it becomes stronger against external force during material handling and manufacturing, bending of the fins is less likely to occur, processing flexibility is high, and a heat exchanger manufacturing device that can improve the heat exchange performance of the heat exchanger can be obtained. .

Further, when the fin raising jig pushes the fins, the pushing direction is alternately changed in the row or step direction of the heat exchanger, so that the degree of freedom in processing is high and the heat exchange is further improved. It is possible to obtain an apparatus for manufacturing a heat exchanger whose vessel performance can be varied.

Further, the blade and the fin raising jig are
Since the fins are integrated so that they are cut and then pushed, the fins can be cut and bent in a short time, so a heat exchanger that produces a heat exchanger with good heat exchanger performance in a short processing time. Can be obtained.

Further, since the fin raising jig can change the pushing force when pushing the fin, it is possible to change the turbulence of the air flow of the passing air which is closely related to the performance of the heat exchanger. Therefore, it is possible to obtain a heat exchanger manufacturing apparatus with a high degree of freedom in processing, in which the heat exchanger performance can be varied.

Further, in the heat exchanger formed by inserting the heat radiation tube into the hole of the fin, one end of the vertical slit portion previously provided in the fin and the end surface portion of the fin are connected to each other to form L.
A step of cutting so that a V-shaped notch can be made,
And a step of pushing the inside of the L-shaped cut portion of the fin, so that the cut-and-raised portion of the fin is formed at at least one of an upstream end portion and a downstream end portion of the wind flow of the fin. It is possible to obtain a method for manufacturing a heat exchanger, which has a small amount of fin deformation correction work, has a high degree of processing freedom, and can improve the heat exchange performance of the heat exchanger.

Further, in the heat exchanger formed by inserting the heat radiation pipe into the hole of the fin, the step of cutting from the end face of the fin to a predetermined position at a predetermined interval and pushing the fin during the cutting. And the step of forming the cut-and-raised portion of the fin on at least one of the upstream side and the downstream side of the air flow of the fin, the strength of the fin end face portion is further increased, and the fin is used at the time of material handling or manufacturing. As a result, the fins are less likely to be bent, the degree of freedom in machining is high, and the heat exchange performance of the heat exchanger can be improved.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a heat exchanger manufacturing apparatus according to a first embodiment of the present invention.

FIG. 2 is a schematic configuration diagram of another heat exchanger according to Embodiment 1 of the present invention.

FIG. 3 is a schematic configuration diagram of another heat exchanger according to the first embodiment of the present invention.

FIG. 4 is a schematic configuration diagram of a heat exchanger manufacturing device according to a second embodiment of the present invention.

FIG. 5 is a schematic configuration diagram of a conventional heat exchanger manufacturing apparatus.

[Explanation of symbols]

1 fin, 1b slit part, 1c fin hole,
2 radiating pipe, 3 fin fixing tool, 4 blade, 5 fin raising jig, 6 fin cutting and raising part.

Claims (7)

[Claims] 1. A heat exchanger formed by inserting a heat radiation pipe into a hole of a fin, wherein an L-shaped cut is formed by connecting one end of a vertical slit portion previously provided in the fin and the end face portion of the fin. And a fin raising jig that pushes the inside of the L-shaped cut portion formed by cutting the blade, and the upstream or downstream end of the air flow of the fin. An apparatus for manufacturing a heat exchanger, characterized in that fin cut-and-raised portions are formed in at least one of the portions. 2. A heat exchanger formed by inserting a radiating pipe into a hole of a fin, and a blade for cutting at a predetermined interval from an end face of the fin to a predetermined position, and the fin between the cutting of the blade. And a fin raising jig for pushing the fin, and a fin raised portion is formed at least at an upstream or downstream end of the air flow of the fin. Manufacturing equipment. 3. The fin raising jig is configured such that, when the fin is pushed, the pushing direction is alternately changed in the row or step direction of the heat exchanger.
An apparatus for manufacturing a heat exchanger according to any one of 1. 4. The heat exchanger according to claim 1, wherein the blade and the fin raising jig are integrated so as to push the fin after cutting the fin. Manufacturing equipment. 5. The apparatus for manufacturing a heat exchanger according to claim 1, wherein the fin raising jig is configured to be able to vary the pushing force when pushing the fin. . 6. A heat exchanger formed by inserting a heat radiation pipe into a hole of a fin, wherein an L-shaped cut is formed by connecting one end of a vertical slit portion previously provided in the fin and the end face portion of the fin. Cutting so as to form a section, and pressing the inside of the L-shaped notch of the fin,
And a cut-and-raised portion of the fin is formed on at least one of an upstream end portion and a downstream end portion of the wind flow of the fin. 7. A heat exchanger formed by inserting a radiating pipe into a hole of a fin, cutting the end face of the fin from a predetermined position to a predetermined position at a predetermined interval, and pressing the fin during the cutting. And a step of forming a cut-and-raised portion of the fin on at least one of an upstream end portion and a downstream end portion of the airflow of the fin.