JP5855032B2 - Heat exchanger manufacturing apparatus and heat exchanger manufacturing method - Google Patents

Description

  The present invention relates to a fin-tube heat exchanger using a flat tube, a heat exchanger manufacturing apparatus, and a heat exchanger manufacturing method.

Air conditioning equipment is required to improve heat exchange efficiency. As one of the means to improve efficiency, fins are arranged at right intervals at right angles to multiple flat tubes filled with refrigerant. The finned tube heat exchanger is used. In this heat exchanger, as a method for facilitating the work of inserting the fin into the flat tube, there is a method of using a fin having an opening on one side. Further, as a means for increasing the degree of adhesion, there is one in which a fin collar (rib) having an angle slightly laid down from the vertical is arranged in the opening and a fin collar springback is used (see, for example, Patent Document 1). .
In addition, there is one in which deformation is suppressed by inserting two fins that are arranged in such a manner that the opening is abutted against the flat tube (see, for example, Patent Document 2).

JP 2011-145043 (Pages 6-7, FIGS. 5 and 6) Japanese Patent Laid-Open No. 3-128167 (pages 2 and 3, FIGS. 2, 3)

  In the case where the fin collar is provided at the opening as described above, the degree of adhesion is enhanced and effective in terms of thermal conductivity, but there is a problem that it is difficult to prevent the deformation of the fin. In addition, manufacturing with two fins butted together requires a highly difficult task of butting two fins with high precision. Exchange efficiency decreases. Moreover, even if it can be manufactured by abutting, the two fins are not completely joined to each other, and a gap is formed between the two fins, so that dew condensation occurs when heating the air conditioner. The water generated by the water tends to accumulate due to the surface tension, and if the heating operation is continued in that state, it eventually becomes frost and deteriorates the heat exchange efficiency.

The present invention has been made to solve the above-described problems, and the manufacture of a fin-tube heat exchanger using a flat tube that can suppress deformation of the fin opening and obtain high heat exchange efficiency. It aims at obtaining the manufacturing method of an apparatus and a heat exchanger .

In the heat exchanger manufacturing apparatus according to the present invention, a tube holding member that holds a plurality of flat tubes through which a refrigerant flows, parallel to each other at a predetermined interval with a surface on the long diameter side facing each other, and the flat tubes are inserted. A plurality of openings for holding the first fin formed on one side, and moving the openings from one side of the plurality of flat tubes held in parallel toward the flat tube side The first insertion member to be mounted on the outer peripheral surface of the flat tube and the plurality of openings for inserting the flat tube are held in parallel by holding the second fin formed on the other side. A second insertion member that moves the opening from the other side of the plurality of flat tubes toward the flat tube side and attaches to the outer peripheral surface of the flat tubes , and holds the parallel portions It extends in a direction perpendicular to the plurality of flat tubes and can move along the extending surface. A plurality of slits provided so that the plurality of flat tubes can be individually inserted into a main surface of the provided plate-like body, and the first set in a region including the vicinity of the bottom in the depth direction of the slits The first fin holding part as the first insertion member for holding the fins of the first and the second fins for holding the second fin set in a region including the vicinity of the entrance part in the depth direction of the slit A fin inserter having a second fin holding portion as an insertion member, and the first fin holding portion on the one side when the first fin is attached to the flat tube When the fin inserter is attached to the outer peripheral surface of the flat tube while the fin inserter is moved in the direction of the other side while the second fin is attached to the flat tube, the second fin The second fin on the other side Wherein in a state of being held by the sandwiching member by a fin inserter is moved in the direction of the one side is obtained as a drive mechanism for mounting on an outer peripheral surface of the flat tubes.
In addition, the method for manufacturing a heat exchanger according to the present invention is for holding a plurality of flat tubes through which a refrigerant flows, in parallel with each other at a predetermined interval, with the surfaces on the long diameter side facing each other, and inserting the flat tubes Holding the first fin having a plurality of openings formed on one side, and moving the opening from one side of the plurality of flat tubes held in parallel toward the flat tube side, The other of the plurality of flat tubes, which is attached to the outer peripheral surface of the flat tube and in which a plurality of openings for inserting the flat tube are held in parallel while holding the second fin formed on the other side. The opening is moved from the side toward the flat tube side and attached to the outer peripheral surface of the flat tube, and extends in a direction perpendicular to the plurality of flat tubes held in parallel. On the main surface of the plate-like body provided movably along the extending surface, the plurality of flats A plurality of slits provided so as to be individually inserted, a first fin holding portion that holds the first fin set in a region including the vicinity of the bottom in the depth direction of the slit, and the slit The first fin is attached to the flat tube using a fin inserter having a second fin holding portion that holds the second fin set in a region including the vicinity of the inlet portion in the depth direction. When the first fin is held by the first fin holding portion on the one side, the fin inserter is moved in the direction of the other side to be attached to the outer peripheral surface of the flat tube. When the second fin is attached to the flat tube, the fin inserter is oriented in the direction of the one side while the second fin is held by the second fin holding part on the other side. The outer circumference of the flat tube It is characterized in that to mount the.

In the heat exchanger manufacturing apparatus of the present invention, in a heat exchanger using a fin having an opening on one side and a flat tube, a finished product having a configuration in which the opening is rotated 180 ° is efficiently manufactured. Since the fin inserter is always slidably in contact with the flat tube and can maintain the space between the flat tubes, the flat tube tends to be biased by the moment that the fins are deformed. The effect of suppressing the deformation of the fins can be obtained, and the flat tube deviation is restricted, so that even when the number of fins is increased, the mounting process is smoother In addition, the number of components of the manufacturing apparatus can be reduced.
Further, in the heat exchanger manufacturing method of the present invention, in a heat exchanger using fins and flat tubes having openings on one side, a finished product having a structure in which the openings are rotated by 180 ° is efficiently used. Since the fin inserter can always be slidably in contact with the flat tube and the flat tubes can be kept spaced apart from each other, the flat tube is displaced by the moment of deformation of the fins. Attempts to restrict the deformation of the fins and the effect of further suppressing the deformation of the fins, and the displacement process of the flat tube, the mounting process even when the number of fins mounted has increased Can be performed more smoothly, and a heat exchanger can be manufactured with a manufacturing apparatus having a small number of components.

It is a perspective view which shows the principal part of the heat exchanger which concerns on Embodiment 1, 2 of this invention. It is a front view which shows the fin which comprises the heat exchanger shown by FIG. FIG. 3 is an enlarged cross-sectional end view showing the shape of a fin collar formed in an opening of the fin shown in FIGS. 1 and 2. It is a figure which illustrates notionally the relationship when the deformation | transformation when the fin shown by FIG. 2 is mounted | worn to a flat tube, and the moment which acts on a flat tube. It is a figure explaining the clearance gap which generate | occur | produces between a flat tube and a fin, when the fin shown by FIG. 2 deform | transforms. It is process drawing which shows the principal part of the manufacturing process of the heat exchanger which concerns on Embodiment 1 of this invention. It is a figure which shows the principal part and operation | movement of the manufacturing apparatus and manufacturing method of a heat exchanger which concern on Embodiment 1 of this invention. It is a figure which shows the principal part and operation | movement of the manufacturing apparatus and manufacturing method of a heat exchanger which concern on Embodiment 2 of this invention. It is a front view which shows roughly the principal part of the fin inserter shown by FIG.

Embodiment 1 FIG.
1 is a perspective view showing a main part of a heat exchanger according to Embodiments 1 and 2 of the present invention, FIG. 2 is a front view showing fins constituting the heat exchanger shown in FIG. 1, and FIG. 1 is an enlarged sectional end view showing the shape of the fin collar formed in the opening of the fin shown in FIG. 2, FIG. 4 is a view showing the deformation when the fin shown in FIG. FIG. 5 is a diagram for conceptually explaining the relationship between the moment acting on the fin and the flat tube, and FIG. 5 is a diagram for explaining a gap generated between the flat tube and the fin when the fin shown in FIG. 2 is deformed. . The heat exchanger according to the present invention press-fits a plurality of flat tubes 1 made of a metal material such as aluminum or copper, through which a refrigerant is enclosed and passed, and a right angle with respect to the plurality of flat tubes 1. It consists of a plurality of fins 2 that are mounted. A plurality of the flat tubes 1 are arranged in parallel at intervals so that the outer peripheral surfaces 1a of the long diameter portions face each other.

  The fin 2 includes a first fin 21 having an opening 2a for inserting the flat tube 1 and a second fin 22 having the opening 2a provided on the opposite side of 180 °. A predetermined number of the second fins 22 are mounted by alternately changing the direction of the openings 2a. As shown in FIG. 2, the openings 2 a of the fins 2 are provided on one side (the lower side in FIG. 2) at the same interval P as the plurality of flat tubes 1 provided in parallel. The opening 2 a has a substantially U-shape that is along the surface in approximately three directions on the outer peripheral surface of the flat tube 1. Heat conduction is realized by bringing the opening 2 a into close contact with the outer peripheral surface of the flat tube 1. At this time, in order to increase the degree of adhesion, the contact portion is also joined by brazing or using an adhesive. The first fin 21 and the second fin 22 may have the same shape or may be different from each other. Here, for the sake of convenience, the one inserted from one side of the flat tubes 1 arranged side by side is called the first fin 21, and the one inserted from the other side is called the second fin 22, and there is no need to distinguish between them. This is simply called fin 2.

In general, the fin 2 is often a thin metal plate such as aluminum, copper, or an alloy thereof having a plate thickness of about 0.1 mm to 0.5 mm, and the flat tube 1 with only a plate thickness portion. In the fitting with the outer peripheral surface, it is in a line contact state and it is difficult to secure a bonding area.
Therefore, a method for realizing surface contact with the flat tube 1 by providing a fin collar 2b formed integrally with the fin 2 along the opening 2a of the fin 2 as shown in FIG. 3 is known. ing. Further, by setting the rising angle α of the fin collar 2b to 90 ° or less with respect to the fin 2, the effect of springback can be obtained, and the fin 2 and the flat tube 1 are in a close-fitting relationship. Even if it exists, position shift does not generate | occur | produce easily.

  However, when the openings 2a of the flat tubes 1 and the fins 2 that are arranged side by side have a close-fitting relationship at a plurality of locations, as shown in FIG. 2 is deformed like the fin 2A of FIG. The amount of deformation increases as the number of fins 2 inserted increases in the process of attaching the fins 2 to the flat tube 1. The displacement at the opening end portion of the opening 2a becomes large. Further, when the fin 2 is deformed as shown in FIG. 4, the flat tube 1 rotates to follow the deformation of the fin 2, and a twist occurs. In this case, a gap S is generated between the undeformed fin 2 and the flat tube 1 as shown in FIG.

  Therefore, in order to solve the above-described problems, in the present invention, the direction of the opening 2a is rotated by 180 ° with respect to the flat tube 1 so that the flat tube 1 is spaced from one side and the other side. By inserting them alternately, the moments generated by the effect of the springback are canceled out and the deformation of the fins 2 is suppressed.

  Hereinafter, a heat exchanger manufacturing apparatus and method according to Embodiment 1 of the present invention will be described with reference to FIGS. 6 is a process diagram showing the main part of the manufacturing process of the heat exchanger according to Embodiment 1 of the present invention, and FIG. 7 shows the manufacturing apparatus and manufacturing method of the heat exchanger according to Embodiment 1 of the present invention. It is a figure which shows the principal part and its operation | movement. As shown in FIG. 6, in the present invention, a single first fin 21 is inserted into the flat tube 1 in the direction of arrow A with the opening directed downward in the figure from the upper direction in the figure ( (A) Step 1). Next, one second fin 22 having an opening directed upward in the figure from the lower direction in the figure is inserted in a direction indicated by an arrow B at a position separated by a certain distance (pitch p) (step (b)). 2). The first fins 21 inserted from above and the second fins 22 inserted from below are alternately inserted at a predetermined distance (pitch p), thereby heat exchanger ((c ) Completed). Note that the insertion of the fins into the flat tube 1 is a press fit including at least elastic deformation of the fin collar 2b.

  As shown in FIG. 7, the heat exchanger manufacturing apparatus according to Embodiment 1 of the present invention has a plurality of flat tubes 1 through which encapsulated refrigerant flows to face the long diameter side surface 1 a at a predetermined interval. A stage 30 that is a pipe holding member for holding the pipes parallel to each other, and a drive mechanism (not shown) that combines a ball screw and a motor for moving the stage 30 in the axial direction (left and right in the figure) of the flat tube 1. The first fin 21 is disposed on one side (upper side) of the flat tube 1 and the opening is directed to the flat tube side, and is attached to the outer peripheral surface of the flat tube 1 at a right angle from above. An outer periphery of the flat tube 1 from below, holding the second fin 22 disposed on the other side (lower side) of the first insertion member 31 and the flat tube 1 and having the opening directed to the flat tube side Inserted into the second insertion member 32 to be mounted at right angles to the surface and the first insertion member 31 It comprises a fin feeder 33a for feeding the fin, and the like fin feeder 33b for feeding the fin before inserted into the second insertion member 32.

  The first insertion member 31 and the second insertion member 32 are arranged to face each other up and down in the drawing so as to sandwich a plurality of flat tubes 1 held parallel to each other. The interval between the first insertion member 31 and the second insertion member 32 in the axial direction of the flat tube 1 (left-right direction in FIG. 7) is shifted by an amount corresponding to one pitch p of the fin to be mounted, and is not shown. Here, the first fin 21 and the second fin 22 held by the driving device are driven synchronously so as to be simultaneously mounted on the outer peripheral surface of the flat tube 1.

  Next, the operation of the heat exchanger manufacturing apparatus configured as described above will be described in the light of the manufacturing process described above. First, as shown in FIG. 7 (a), one first fin whose opening is directed to the flat tube 1 side by the fin supply device 33a with respect to the insertion member 31 disposed on the upper side of the drawing. 21 is supplied as shown by arrow C. The insertion member 31 holds the first fin 21 received by a vacuum suction hole (not shown) installed in itself. Similarly, with respect to the insertion member 32 arranged on the lower side of the figure, the fin supply device 33b supplies one second fin 22 with the opening directed to the flat tube 1 side as indicated by the arrow D. To do. The insertion member 32 holds the second fin 22 received by vacuum suction (not shown).

Next, as shown in FIG. 7B, the upper insertion member 31 is moved downward, and at the same time, the lower insertion member 32 is moved in conjunction with the upper direction to hold and hold the first fin 21. And the second fin 22 are mounted on the outer peripheral surface of the flat tube 1. When the insertion into the predetermined position is completed, the vacuum suction is stopped and the fin is released. At this time, the first fin 21 and the second fin 22 are mounted at a position where the distance between them is 1 pitch p.
Next, as shown in FIG. 7 (c), the upper insertion member 31 is moved upward and the lower insertion member 32 is simultaneously moved in the reverse direction in the opposite direction. Return to the standby position.
Next, as shown in FIG. 7D, the stage 30 is moved by two pitches (p × 2) in the direction indicated by the arrow E to prepare for the next fin receiving and mounting operations. A desired heat exchanger can be manufactured by repeating this series of operations.

  For example, the mechanism for supplying the fins one by one to the suction head at the left end of the drawing in the fin supply devices 33a and 33b in a predetermined posture and holding them in a vacuum is a part that can be implemented in exactly the same way as in the prior art. Therefore, illustration and description are omitted.

  As described above, in the heat exchanger according to the first embodiment, the fins 2 adjacent to each other in the refrigerant flow direction are inserted alternately in the direction of the opening 2a. It is possible to suppress the phenomenon that the fin having the opening is deformed by the interaction with the fin inserted from the opposite direction, and the deformation of the opening 2a for inserting the flat tube 1 formed in the fin 2 is suppressed. Moreover, the effect of increasing the degree of adhesion can be obtained by the spring back of the fin collar 2b, and the heat exchange efficiency can be increased. In addition, since it is not necessary to abut the fins having different orientations of the openings, it is easy to manufacture, and since there is no cause of condensation and no increase in air resistance, the heat exchange efficiency is not lowered. Effects can be obtained.

In the heat exchanger manufacturing apparatus according to the first embodiment, the first fins 21 and the second fins 22 with the orientation of the opening for inserting the flat tube in opposite directions are alternately inserted into the flat tube 1. By doing in this way, the deformation | transformation of the opening part 2a is suppressed and the effect which raises an adhesiveness by the spring back of the fin collar 2b can be acquired. Further, moment M for cormorants If cancel each other, the flat tubes 1 together with the deformation of the fins 2 to be deformed fins 2 by inserting alternately the first fin 21 and the second fin 22 in a flat pipe 1 Since deformation is also suppressed, the mounting process can be performed smoothly even when the number of mounted fins 2 increases.

  Further, since it is not necessary to abut the fins having different orientations of the opening 2a, the structure of the manufacturing apparatus can be simplified and the manufacturing can be efficiently performed. Furthermore, since there is no cause of dew condensation of the obtained heat exchanger and there is no increase in air resistance, remarkable effects such as no reduction in heat exchange efficiency can be obtained. In addition, the first insertion member 31 and the second insertion member 32 are individually arranged on the one side and the other side of the plurality of flat tubes 1 held in parallel with each other being shifted by one pitch. Since both the first and second insertion members 31 and 32 are driven simultaneously so that the first fin 21 and the second fin 22 are mounted simultaneously, the fin 2 with respect to the flat tube 1 The mounting process can be performed efficiently.

  In the heat exchanger manufacturing method according to the first embodiment, the first fins 21 and the second fins 22 whose orientations of the openings 2a are changed are alternately arranged at intervals of 1 pitch p with respect to the flat tube 1. By inserting, the deformation | transformation of the opening part 2a is suppressed and the heat exchanger which raised the close_contact | adherence degree by the spring back of the fin collar 2b can be manufactured. In addition, a heat exchanger using the fin 2 having the opening 2a on one side and the flat tube 1 can be manufactured while maintaining high performance and quality.

  In addition, the first insertion member 31 and the second insertion member 32 are individually arranged on the one side and the other side of the plurality of flat tubes 1 held in parallel with each other being shifted by one pitch. Since both the first and second insertion members 31 and 32 are driven simultaneously so that the first fin 21 and the second fin 22 are mounted simultaneously, the fin 2 with respect to the flat tube 1 The mounting speed can be increased overall.

Embodiment 2. FIG.
FIG. 8 is a view showing the main part and operation of the heat exchanger manufacturing apparatus and method according to Embodiment 2 of the present invention, and FIG. 9 is a schematic view of the main part of the fin insert shown in FIG. FIG. In the second embodiment, the functions of the first insertion member 31 and the second insertion member 32 shown in FIG. 7 are integrated and realized by one fin inserter 4 as shown in FIG. The fin inserter 4 is connected to a drive mechanism (not shown) disposed on the upper side of FIG. 8 in this example, which is one side of a plurality of flat tubes 1 held in parallel. Has been. In the figure, the heat exchanger manufacturing apparatus includes a stage 30A which is a tube holding member for fixing and supporting the flat tube 1, the fin inserter 4, and the first fin 21 inserted from above in FIG. The fin supply device 33a for supplying the fin and the fin supply device 33b for supplying the fin inserted from below are provided.

  As shown in FIG. 9, the fin inserter 4 has a predetermined width and a predetermined depth for fitting the fin collar 2 b provided in the opening 2 a of the fin 2 shown in FIG. 3 to the outer peripheral surface of the flat tube 1. The slits 4a are made of a plate-like body provided with a plurality of the same intervals P1 as the intervals P1 of the plurality of flat tubes 1 held in parallel. 8 is provided with a suction hole 41a for sucking and fixing the first fin 21 inserted from the upper side of FIG. 8, and a suction hole 42a for sucking and fixing the second fin 22 inserted from the lower side of the figure. Yes. Also, a moving mechanism for moving the stage 30A in the horizontal direction in the drawing, the driving mechanism for driving the fin inserter 4 in the vertical direction in the drawing, the driving devices for the fin supply devices 33a and 33b, the vacuuming device, and their control devices (Both not shown) are provided.

  And the member equivalent to the 1st insertion member 31 of the said Embodiment 1 is set to the area | region including the bottom part F vicinity of the depth direction of the said slit 4a as shown in FIG. The member corresponding to the second insertion member 32 includes the second fin 22 set in a region including the vicinity of the inlet portion G in the depth direction of the slit 4a. The second fin holding part 42 is configured to hold. The suction hole 41a and the suction hole 42a can be evacuated independently of each other through different paths (not shown). And when attaching the 1st fin 21 to the flat tube 1, the 1st fin 21 is hold | maintained at the 1st fin holding | maintenance part 41 by the one side (upper side of FIG. 8), and the 2nd fin 22 is attached. When attached to the flat tube 1, the second fin 22 is configured to be held by the second fin holding portion 42 on the other side (the lower side in FIG. 8).

  Next, the fin insertion operation in the second embodiment configured as described above will be described. First, the fin inserter 4 is moved to a position for receiving the first fin 21 shown in FIG. 8A, and the upper fin supply device 33a holds the opening of the first fin 21 downward. . At that position, the fin supply device 33a is moved in the direction of arrow H, and the fin inserter 4 receives the first fin 21, and makes the corresponding suction hole 41a (shown in FIG. 9) a negative pressure so that the first fin It fixes to the holding | maintenance part 41 by vacuum suction. Then, as indicated by an arrow I in FIG. 8B, the fin inserter 4 is lowered so that the first fin holding portion 41 moves in the direction of the flat tube 1 and moved to the position of FIG. 8C. The first fin 21 is attached to the flat tube 1. When the insertion is completed, the vacuum suction is stopped.

  At this time, the second fin holding portion 42 is moved below the flat tube 1 to a position where the second fin 22 to be mounted next can be received. At this position, the arrow J in FIG. As shown, the second fin 22 is received from the fin supply device 33b, and the suction hole 42a is set to a negative pressure and fixed to the second fin holding portion 42 by vacuum suction. Note that the opening of the second fin 22 faces upward. Further, in order to ensure the holding of the second fin 22 with respect to the fin holding portion, particularly the second fin holding portion 42, for example, the edge of each slit 4a on the fin holding portion side of the fin collar 2b shown in FIG. A concave portion (not shown) corresponding to the shape and thickness of the flat tube 1 when mounted is engraved and the fin collar 2b is accommodated in the concave portion, so that the second fin 22 can slide in the vertical direction. It can be surely prevented. In this case, the width of the slit 4a opposite to the fin holding portion (the left side in FIG. 8) may be dimensioned so as to be in sliding contact with the outer peripheral surface of the flat tube 1 in a loose fit, for example.

  Thereafter, in order to insert the second fin 22 from the lower direction, the stage 30A is moved by one pitch in the direction indicated by the arrow K in FIG. 8C (right direction in the figure). When the rightward movement of the stage 30A is completed, the fin inserter 4 is raised as shown by the arrow L in FIG. 8D, and the second fin 22 is attached to the flat tube 1. When the insertion is completed, the vacuum suction is stopped. At this time, the fin inserter 4 is at the position shown in FIG. Then, in preparation for the insertion of the next first fin from the top, the stage 30A is moved by one pitch in the right direction in the figure. By repeating the operations shown in FIG. 8A to FIG. 8D, heat exchangers mounted alternately so that the directions of the openings of adjacent fins are opposite to each other are manufactured.

  As described above, in the heat exchanger manufacturing apparatus according to the second embodiment, in the heat exchanger using the fin 2 having the opening on one side and the flat tube 1, the opening is rotated 180 °. The finished product can be manufactured efficiently. Further, since the fin inserter 4 is always slidably in contact with the flat tube 1 and the interval between the flat tubes 1 can be maintained at the interval P1, the flat tube is caused by the moment M at which the fins 2 are deformed. 1 can be prevented from being biased, and an effect of further suppressing deformation of the fin 2 can be obtained. In addition, since the deviation of the flat tube 1 is restricted, the mounting process can be performed more smoothly even when the number of fins 2 to be mounted has increased. Moreover, since the function of the 1st insertion member 31 and the 2nd insertion member 32 of Embodiment 1 was comprised by the one fin inserter 4, the number of components of a manufacturing apparatus can be decreased.

  It should be noted that within the scope of the present invention, a part or all of each embodiment can be freely combined, or each embodiment can be appropriately modified or omitted. For example, the lower end of the slit 4a of the fin inserter 4 shown in FIG. 9 is closed to form the slit 4a into a long hole shape, and when the flat tube 1 is set on the stage 30, the slit is inserted into the long hole shape slit. You may do it. Further, for example, by making a plurality of first insertion members 31 and a plurality of second insertion members 32 in the first embodiment, various modifications such as increasing the number of fins to be mounted at one time are possible. Needless to say.

  DESCRIPTION OF SYMBOLS 1 Flat tube, 1a Long-diameter side surface, 2 Fin, 2a Opening part, 2b Fin collar, 21 1st fin, 22 2nd fin, 30, 30A Stage (tube holding member), 31 1st insertion member, 32 2nd insertion member, 33a, 33b Fin supply apparatus, 4 Fin inserter, 4a Slit, 41a, 42a Adsorption hole, 41 1st fin holding part, 42 2nd fin holding part.

Claims (3)

A tube holding member that holds a plurality of flat tubes through which a refrigerant flows in parallel with each other at a predetermined interval with a surface on the long diameter side facing each other, and a plurality of openings for inserting the flat tubes are formed on one side portion The first fin is held, and the opening is moved from one side of the plurality of flat tubes held in parallel toward the flat tube to be attached to the outer peripheral surface of the flat tube. And the opening from the other side of the plurality of flat tubes held in parallel by holding a second fin formed on the other side with a plurality of openings for inserting the flat tube A second insertion member that moves the portion toward the flat tube side and is attached to the outer peripheral surface of the flat tube, in a direction orthogonal to the plurality of flat tubes held in parallel The main surface of the plate-like body that extends and is movable along the extended surface is provided with the composite As the first insertion member that holds the first fin set in a region including a plurality of slits provided so that the flat tubes can be individually inserted, and the vicinity of the bottom in the depth direction of the slits A first fin holding portion, and a second fin holding portion as the second insertion member for holding the second fin set in a region including the vicinity of the entrance portion in the depth direction of the slit. When the fin insert and the first fin are attached to the flat tube, the first fin is held by the first fin holding portion on the one side and the fin insert is held on the other side. When the second fin is attached to the flat tube, the second fin is held on the other side when the second fin is attached to the outer peripheral surface of the flat tube. The fin in the state of being held in Heat exchanger manufacturing apparatus characterized by comprising a driving mechanism for mounted on the outer peripheral surface of the flat tubes is moved in the direction of the one side of the insert. The first fin holding portion and the second fin holding portion in the fin inserter are provided with a vacuum suction hole for holding the corresponding first fin or the second fin. The apparatus for manufacturing a heat exchanger according to claim 1 , wherein: A plurality of flat tubes through which the refrigerant flows are held in parallel with each other at a predetermined interval with their long-diameter-side surfaces facing each other, and a plurality of openings for inserting the flat tubes are formed on one side. Holding the fins, moving the opening from one side of the plurality of flat tubes held in parallel toward the flat tube side and attaching them to the outer peripheral surface of the flat tubes, A plurality of openings for insertion are held in parallel while holding second fins formed on the other side, and the openings are directed from the other side of the plurality of flat tubes toward the flat tube side. A method of moving and attaching to the outer peripheral surface of the flat tube, the plate extending in a direction orthogonal to the plurality of flat tubes held in parallel and movably provided along the extending surface A plurality of flat tubes are provided on the main surface of the body so that the plurality of flat tubes can be inserted individually. A first fin holding portion for holding the first fin set in a region including the vicinity of the bottom portion in the depth direction of the slit, and a region including the vicinity of the inlet portion in the depth direction of the slit. When mounting the first fin on the flat tube using a fin inserter having a second fin holding portion for holding the set second fin, the first fin is placed on the one side. In this state, the fin inserter is moved in the direction of the other side while being held by the first fin holding portion to be attached to the outer peripheral surface of the flat tube, and the second fin is attached to the flat tube. When the second fin is held on the second fin holding part on the other side, the fin inserter is moved in the direction of the one side and attached to the outer peripheral surface of the flat tube. Heat exchanger characterized by Production method.

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