JP2010085027A - Heat exchanger - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heat exchanger for improving product quality by performing brazing of high performance. <P>SOLUTION: This heat exchanger (condenser 1) includes: a pair of tanks 2, 3 disposed at an interval; a core section 4 comprising a plurality of tubes 4a inserted and fixed to the pair of tanks 2, 3 at both ends, and a plurality of fins 4b stacked alternately with the tubes 4a; and reinforcements 10 respectively disposed at both sides in the stacking direction of the core section 4 and inserted and fixed to the pair of tanks 2, 3 at both ends. Projecting sections 10j projecting from a reference face of an inner side in the stacking direction of the core section 4 of the reinforcements 10 are respectively formed in the longitudinal direction of the reinforcements 10, and the projecting sections 10j are kept into contact with the fins 4c adjacent to the reinforcements 10. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a heat exchanger.

Conventionally, the technique of patent document 1, 2 is known as a heat exchanger.
According to the present invention, both sides of the core portion in the stacking direction are connected and reinforced by the reinforcement in which both end portions are inserted and fixed to a pair of tanks (see Patent Document 1).
In addition, the fins of the core portion are alternately stacked with the tubes in a state compressed in the fin compression step during temporary assembly, and then assembled to the reinforcement and the tank (see Patent Document 2).
JP 2006-52866 A JP 2006-123084 A

However, in the conventional invention, when the reinforcement and the tank are assembled to the core portion, the compression of the fin adjacent to the reinforcement is restored due to the lack of binding force by the reinforcement, and the longitudinal direction is There was a risk of contact with the tank after stretching and displacement.
When the brazing process is performed in a state where the fin is in contact with the tank, the brazing material of the fin flows to the tank side, which causes poor brazing of the fin.

  The present invention was made in order to solve the above-mentioned problems, and the object of the present invention is to prevent the positional deviation of the fins provided at the outermost end of the core part and realize good brazing. The object is to provide a heat exchanger capable of improving product quality.

  According to the first aspect of the present invention, a pair of tanks arranged at a predetermined interval, a plurality of tubes having both ends inserted and fixed to the pair of tanks, and a plurality of fins stacked alternately with the tubes A heat exchanger comprising a core portion made of a plurality of cores and a reinforcement that is disposed on both sides of the core portion in the stacking direction, and both ends of the core portion are inserted and fixed to the pair of tanks. A convex portion protruding from a reference surface on the inner side in the stacking direction of the core portion of the force is formed, and the convex portion is brought into contact with a fin adjacent to the reinforcement.

In the present invention, a convex portion that protrudes from the reference surface on the inner side in the stacking direction of the core portion of the reinforcement is formed in the longitudinal direction of the reinforcement, and the convex portion is brought into contact with the fin adjacent to the reinforcement.
Thereby, position shift of a fin can be prevented, good brazing can be realized, and product quality can be improved.

  Embodiments of the present invention will be described below with reference to the drawings.

Example 1 will be described below.
FIG. 1 is a front view showing a heat exchanger of Example 1, FIG. 2 is an enlarged cross-sectional view of a main part of Example 1, FIG. 3 is an exploded perspective view of a tank body of Example 1, and FIG. .
5 is an enlarged perspective view of the tube plate of the first embodiment, FIG. 6 is a side view of the tank plate of the first embodiment, FIG. 7 is a cross-sectional view taken along line S7-S7 in FIG. It is sectional drawing in a line.

  9 is a plan view of the reinforcement of the first embodiment, FIG. 10 is a front view thereof, FIG. 11 is a perspective view (only a part thereof), FIG. Front view (only a part), a cross-sectional view taken along line S14-S14 in FIG. 14, and FIGS. 15 and 16 are diagrams for explaining the fixation between the reinforcement and the tank according to the first embodiment.

First, the overall configuration will be described.
As shown in FIG. 1, a condenser 1 in which the heat exchanger of the first embodiment is adopted is disposed between a pair of tanks 2 and 3 disposed at a predetermined interval on the left and right sides, and both tanks 2 and 3. The core part 4 etc. are provided.

  The tank 2 is divided into three chambers R1, R3, R6 by four plate-shaped divider plates D1, and an input connector 5 having an input port 5a communicating with the chamber R1 is provided, while communicating with the chamber R6. The output connector 6 including the output port 6a is provided.

  The tank 3 is divided into three chambers R2, R4, and R5 by four divider plates D1, and a receiver tank 9 that communicates with the chambers R4 and R5 through connecting pipes 7 and 8 is provided.

The core portion 4 includes a plurality of flat tubular tubes 4a whose both end portions are inserted and fixed in the corresponding tanks 2 and 3, respectively, and corrugated plate-like fins 4b whose corrugated top portions are joined to the adjacent tubes 4a. It is configured.
Further, both sides of the core portion 4 in the stacking direction are connected and reinforced by a pair of reinforcements 10 and 10 whose both ends are inserted and fixed to the corresponding tanks 2 and 3 respectively.

Next, the tank body 11 of the tanks 2 and 3 will be described in detail.
The basic structure of the tank main body 11 of the tanks 2 and 3 is the same, and the tank main body 11 has a vertically symmetrical shape. Therefore, the upper end of the tank main body 11 of the tank 2 will be described below.

  As shown in FIGS. 2 to 4, the tank body 11 of the tank 2 includes a tube plate 12, a tank plate 13 that is stacked in the middle of the tube plate 12, and a position having a predetermined allowance from the end of the tank body 11. And the above-described divide plate D1 interposed between the two.

As shown in FIG. 5, the tube plate 12 has a substantially U-shaped cross section and is formed in a semi-cylindrical shape. The opposite side walls 12a, 12a of the U-shaped cross section and the both side walls 12a, 12a And a coupling wall 12b to be coupled.
On both side walls 12a and 12a of the tube plate 12, a plurality of claw portions 12c and 12c projecting laterally are formed at equal intervals along the longitudinal direction of the tube plate 12.
In addition, the pair of claw portions 12d and 12d arranged on the outermost side among the plurality of claw portions 12c and 12c is a divide plate at the outermost position arranged at a position moved from the end of the tube plate 12 by a predetermined amount. It is formed at the outer (upper) position of D1.
It should be noted that the detailed shape, number of formation, formation position, etc. of the pair of claws 12c, 12c (the pair of claws 12d, 12d) can be set as appropriate.
The coupling wall 12b is formed with a reinforcement hole 12e through which the end of the reinforcement 10 is inserted and fixed, and a tube hole 12f through which the end of the tube 4a is inserted and fixed.

Specifically, a guide portion 12g that is burred toward the inside of the tank body 11 is formed at the upper edge portion of the reinforcement hole 12e.
Therefore, compared with the case where the guide portion 12g is formed at the lower edge portion of the peripheral edge of the reinforcement hole 12e, it is not necessary to secure a material allowance for burring on the upper side of the tank body 11, and The length can be shortened, and as a result, the capacitor 1 can be made compact.
On the other hand, the tube hole 12f is formed with a pair of upper and lower guide portions 12h that are burred toward the inside of the tank body 11.

On the other hand, the tank plate 13 has a substantially U-shaped cross section and is formed in a semi-cylindrical shape. The opposite side walls 13a, 13a of the U-shaped cross section, and a coupling wall that couples the both side walls 13a, 13a to each other. 13b.
As shown in FIG. 6, at the position corresponding to the pair of claws 12d, 12d in the tank plate 13, a pair of pawl locking holes 13d are hung from both side walls 13a, 13a to both shoulders 13c of the coupling wall 13b. , 13d are formed in a substantially square shape.
The height dimension of the claw locking hole 13d is set to be the same as or slightly larger than the height dimension of the claw portion 12d.

A vehicle mounting pin locking hole 13e for locking a locking portion 14d of a vehicle mounting pin 14 (to be described later) is square on the outer (upper) position of the divider plate D1 at the outermost position on the coupling wall 13b of the tank plate 13. It is formed into a shape.
A dividing plate locking hole 13g into which a protruding portion 13f protruding from the dividing plate D1 is inserted and fixed is formed in a quadrangular shape at a position where the outermost dividing plate D1 is interposed in the coupling wall 13b. ing.
A circular communication hole 13h is formed at a position where the connector 5 (connector 6) is fixed on the coupling wall 13b.

  3 and 4, each divider plate D1 is interposed between the plates 12 and 13 at a predetermined position, and both side walls 13a of the tank plate 13 are placed inside the side walls 12a and 12a of the tube plate 12. 13a are placed in the middle, and then the claws 12c and 12d are crimped and fixed to the tank plate 13 so that the tank body 11 can be temporarily assembled.

At this time, as shown in FIG. 7, the pair of claw portions 12 c and 12 c are crimped in a state where they are bent inward and are in contact with the corresponding shoulder portions 13 c of the tank plate 13.
Thereby, both plates 12 and 13 can be fixed and maintained at a plurality of locations in the longitudinal direction.

On the other hand, as shown in FIG. 8, the pair of claw portions 12d and 12d are crimped in a state of being bent inward and in contact with the peripheral edge 13i of the corresponding claw locking holes 13d and 13d.
Specifically, in Example 1, each claw portion 12d is refracted inward at a large angle of 90 ° or more, and the inner surface of each claw portion 12d is the side surface portion 13j of the hole peripheral edge 13i of the claw locking hole 13d. It is crimped in a state in contact with

Thereby, both the plates 12 and 13 can be fixed by caulking, and at the same time, tilting in the relative rotation direction (illustrated by the arrow X1 in FIG. 8) in the horizontal plane can be prevented, and misalignment due to the relative rotation of both can be prevented.
Furthermore, since the upper and lower surfaces of each claw portion 12d are in contact with or close to the upper and lower surface portions 13k of the hole peripheral edge 13i of the claw locking hole 13d, it is possible to prevent displacement of the plates 12 and 13 in the longitudinal direction.
Accordingly, the plates 12 and 13 can be firmly swaged and fixed in a well-positioned state.

  It should be noted that the connector 5 (connector 6) is added by an annular projection formed in an annular projection shape outwardly by burring the corresponding communication hole 13h of the tank plate 13 before the plates 12 and 13 are overlapped. By being fastened and fixed, it is configured to be temporarily assembled in contact with the tank plate 13 (see Patent Document 1).

As shown in FIGS. 1 and 2, the vehicle mounting pin 14 is a fixing member for fixing and supporting the upper, lower, left and right ends of the capacitor 1 on the vehicle side, and is made of resin.
The vehicle mounting pin 14 is formed on a cylindrical pin portion 14a fastened to the vehicle side, a disk-shaped flange portion 14b having a diameter continuously increased at the lower end of the pin portion 14a, and a bottom surface of the flange portion 14. An annular protrusion-shaped fitting portion 14c and a tongue piece portion 14e having a locking portion 14d constituted by a part opened to the side are provided.
When the end portion of the tank body 11 is inserted and fitted inside the fitting portion 14c of the vehicle mounting pin 14, the tongue piece portion 14e is deformed laterally due to elastic deformation of the resin, and then the locking portion 14d. The vehicle mounting pin 14 can be mounted on the tank main body 11 by locking in both mounting pin locking holes 13e.

Next, the reinforcement 10 will be described in detail.
In addition, since the reinforcements 10 and 10 arrange | positioned at the lamination direction both sides of the core part 4 are the same shape members, and as shown in FIGS. The left end portion of the provided reinforcement 10 will be illustrated and described.

As shown in FIGS. 11-14, the reinforcement 10 is formed in the substantially U-shaped cross section opened to the lamination direction outer side of the core part 4 over the full length, and both side wall 10a, 10a which this U-shaped cross section opposes And the coupling wall 10b which couple | bonds both side walls 10a and 10a is provided.
As shown in FIG. 11, each side wall 10a is set to have the highest height from the coupling wall 10b, and a central wall 10c having a flat upper surface extends greatly in the longitudinal center of the reinforcement 10e.
Further, the intermediate wall 10e having a flat upper surface formed low from the longitudinal end portion of the central wall 10c to the end portion through the step portion 10d, and the intermediate wall 10e is formed low through the step portion 10f. An end wall 10g having a flat upper surface is formed.
An inclined portion 10h (see FIG. 12) that gradually decreases is formed on the distal end side of the end wall 10g, and the inclined portion 10h has an inclined surface bent inward and is connected to the end of the coupling wall 10b. ing.
Thereby, each side wall 10a is formed in the shape which becomes low stepwise as it goes to the longitudinal direction both ends from the longitudinal direction center.

On the other hand, at the center in the width direction at the end of the coupling wall 10b, a semi-long hole-shaped opening 10i that is opened in the longitudinal direction is formed.
Further, a substantially semi-cylindrical convex portion 10j that protrudes downward from the reference surface of the bottom surface of the coupling wall 10b in a straight line with the longitudinal direction of the opening 10i, and the convex portion that is continuous with the convex portion 10j. A linear bead portion 10k having a protruding height lower than 10j and protruding downward is formed with a predetermined length.
In the first embodiment, the convex portions 10j and the bead portions 10k on the upper surface of the coupling wall 10b are pressed in the plate thickness direction to form the convex portions 10j and the bead portions 10k, but this is not restrictive. .
In addition, the length, shape, formation position, each dimension, etc. of the opening part 10i and the convex part 10j can be set suitably. Moreover, although the opening part 10i was set in a present Example, it is not restricted to this, The rain force 10 which does not set the opening part 10i may be applied.

As shown in FIG. 2, the reinforcement 10 is inserted and fixed in the reinforcement hole 12 e of the tube plate 12.
At this time, as shown in FIG. 15 (a), when the end of the reinforcement 10 is gradually inserted into the reinforcement hole 12e, first, the lower surface of the end of the reinforcement 10 slides into the guide 12g of the reinforcement hole 12e. It moves and is guided smoothly.
Thereby, the insertion property of the reinforcement 10 can be made favorable.
In addition, even when the reinforcement 10 is inserted in a state of being displaced upward, the inclined portion 10h is inclined downward toward the tip side, so that the reinforcement hole 12e can be inserted smoothly.
Furthermore, even when the reinforcement 10 is inserted in a state of being displaced in the width direction, the reinforcement 10b can be smoothly inserted because the inclined portion 10h is bent and has an R shape as it goes inward.

Thereafter, when the end of the reinforcement 10 is further inserted into the reinforcement hole 12e, the step 10f of the reinforcement 10 abuts against the side surface of the tube plate 12 as shown in FIG. Can be fixed in a positioned state.
Therefore, the tip side portion of the step portion 10f of the reinforcement 10 becomes the insertion portion 10m into the tube plate 12 (tank 2 (tank 3)).

Finally, as shown in FIG. 16, the opening 10 i of the reinforcement 10 is expanded in the width direction (arrow direction in FIG. 16) using a jig (not shown), so that the reinforcement 10 is formed in the reinforcement hole. Clamp to 12e.
In addition, when applying the reinforcement 10 in which the opening 10i is not set, the reinforcement 10 is caulked and fixed to the reinforcement hole 12e by expanding the end wall 10g or the inclined portion 10h of the reinforcement 10. May be.
At this time, since the end wall 10g of the insertion portion 10m of the reinforcement 10 is caulked to the side of the peripheral edge of the reinforcement hole 12e, the reinforcement hole 10m is compared with the case where the insertion portion 10m of the reinforcement 10 is flat. A large contact area with 12e can be secured, and the reinforcement 10 can be firmly fixed.
That is, in order to ensure the same contact area as the insertion portion 10m in the flat insertion portion, it is necessary to set the flat thickness (portion corresponding to the coupling wall) to the same thickness as the end wall 10g. On the other hand, the insertion portion 10m can ensure a large contact area without increasing the plate thickness of the coupling wall 10b.

Further, since the reinforcement 12 is inserted and fixed outside the divider plate D1 disposed on the outermost side in the longitudinal direction of the tanks 2 and 3, it is inserted and fixed in the non-flow path of the distribution medium of the capacitor 1. .
Accordingly, the reinforcement 12 can be fixed without considering the sealing performance in the tanks 2 and 3.
In FIG. 16, the tank plate 13 is shown assembled to the tube plate 12, but this is not restrictive.

On the other hand, the fins 4b are alternately stacked with the tubes 4a while being compressed in the fin compression process described in Japanese Patent Application Laid-Open No. 2006-123084 to form the core portion 4, and then the above-described reinforcement 10 is formed. At the same time, it is assembled to tanks 2 and 3.
At this time, as shown in FIG. 2, both end portions in the longitudinal direction of the fins 4 c located at the outermost end in the stacking direction of the core portion 4 are arranged in a state of being locked to the convex portions 10 j of the reinforcement 10.
Furthermore, the height direction edge part (wave-like top part) in the longitudinal direction both ends of the fin 4c is arrange | positioned in the state clamped by the bead part 10k and the tube 4a, and being pressed inside.

  Here, in the conventional invention, when the reinforcement and the tank are assembled to the core portion, the compression of the fin adjacent to the reinforcement is restored due to the lack of binding force by the reinforcement, and the longitudinal direction There was a risk of contact with the tank after extending to a position.

On the other hand, in the first embodiment, since both end portions of the fin 4c in the longitudinal direction are in contact with and locked to the corresponding convex portions 10j of the reinforcement 10, extension of the fin 4c to the outside in the longitudinal direction can be restricted. 4c position shift can be prevented and contact with the tube plate 12 can be prevented.
Since the convex part 10j contacts the center in the width direction of the wave-like top part of the fin 4c and locks the fin 4c, the positional deviation of the fin 4c can be prevented in a stable state.
Moreover, the force which hold | maintains the fin 4c by the bead part 10k can be improved, and the movement to the longitudinal direction of the fin 4c and the position shift to the width direction can be prevented.
Since the bead portion 10k is in contact with the center in the width direction of the fin 4c and locks the fin 4c, the positional deviation of the fin 4c can be prevented in a stable state.

  In addition, at least one of the joint portions of the constituent members of the capacitor 1 excluding the resin vehicle mounting pin 14 is formed of a brazing sheet, or a brazing material to which a flux is previously applied or pasted is formed.

Next, the operation will be described.
[About brazing of capacitors]
When manufacturing such a capacitor 1, after temporarily assembling all the constituent members described above except the resin vehicle mounting pins 14, the joint portions of the constituent members are bonded together by heat treatment in a heating furnace. It is formed integrally by brazing.

Thereafter, the vehicle mounting pins 14 are respectively attached to both end portions of the tank main bodies 11 of the tanks 2 and 3, and then the capacitor 1 is mounted on the vehicle via the pin portions 14 a of the vehicle mounting pins 14.
The receiver tank 9 may be mounted after heat treatment depending on its internal structure.

Here, in the conventional invention, there is a possibility that the holding force of the fins provided at the outermost end of the core portion is weakened due to the difference in the temperature profile accompanying the difference in thermal expansion amount between the reinforcement and the core portion.
Specifically, since the reinforcement has a larger thermal mass than the core portion, the temperature profile has a gentle temperature rise and fall compared to the core portion. In other words, the reinforcement is easier to heat and harder to cool than the core portion.
As a result, particularly when the temperature is lowered during the brazing process, the reinforcement cannot follow the temperature reduction of the core portion, and both end portions of the fin adjacent to the reinforcement hang down due to its own weight.
Normally, the capacitors are housed and brazed with a plurality of capacitors arranged in the vertical direction in the heating furnace with the core portion in a horizontal state.

  In addition, there is a possibility that the fin adjacent to the reinforcement extends in the longitudinal direction due to the wavy shape and comes into contact with the tube plate.

  On the other hand, in the first embodiment, as in the case of the temporary assembly of the capacitor 1, it is possible to prevent the fins 4c from extending in the longitudinal direction and being displaced by the convex portions 10j.

Further, it is possible to prevent the fin 4c from extending in the longitudinal direction by the bead portion 10k, and it is possible to prevent the both ends of the fin 4c from hanging down and being displaced.
Thereby, a favorable brazing process can be realized and the product quality of the capacitor 1 can be improved.

[Condenser operation]
In the capacitor 1 configured as described above, the high-temperature circulation medium of about 60 ° C. flowing into the chamber R1 of the tank 2 from the engine side via the input port 5a of the input connector 5 first corresponds to each of the core portions 4. The vehicle traveling wind passing through the core section 4 or the forced wind and heat of a fan (not shown) while circulating in the turn in the order of the chamber R2 of the tank 3, the chamber R3 of the tank 2, and the chamber R4 of the tank 3 through the tube 4a. Replaced and cooled.
Next, the flow medium that has flowed into the chamber R4 of the tank 3 through the connection pipe 7 flows into the receiver tank 9 and is separated into gas and liquid, and then flows into the chamber R5 of the tank 3 through the connection pipe 8.
Finally, the flow medium that has flowed into the chamber R5 of the tank 3 passes through the core portion 4 while flowing into the chamber R6 of the tank 2 via the corresponding tube 4a of the core portion 4 or a fan (not shown). After being heat-exchanged with forced air and subcooled to around 45 ° C., it is sent to the evaporator side via the output port 6a of the output connector 6 and functions as a heat exchanger.

Next, the effect will be described.
As described above, in the first embodiment, the pair of tanks 2 and 3 arranged at a predetermined interval, the plurality of tubes 4a whose both ends are inserted and fixed to the pair of tanks 2 and 3, and the tubes 4a and a plurality of fins 4b that are alternately stacked, and a reinforcement 10 that is disposed on both sides of the core portion 4 in the stacking direction and that is inserted into and fixed to a pair of tanks 2 and 3 at both ends. In the heat exchanger (condenser 1) provided, convex portions 10j projecting from a reference surface on the inner side in the stacking direction of the core portion 4 of the reinforcement 10 are formed at both ends in the longitudinal direction of the reinforcement 10, respectively. The fin 4c adjacent to the force 10 was brought into contact.
Thereby, the position shift to the longitudinal direction of the fin 4c can be prevented, favorable brazing is implement | achieved, and product quality can be improved.

Moreover, the convex part was made to contact the wavelike top part of the said fin.
Thereby, position shift can be prevented in the state where fin 4c was stabilized.

In addition, the convex portion 10j projects continuously from the reference surface on the inner side in the stacking direction of the core portion 4 of the reinforcement 10 and extends with a predetermined length in the longitudinal direction of the reinforcement 10j. The provided bead portion 10k was formed, and the bead portion 10k was brought into contact with the fin 4c.
Thereby, the position shift to the width direction of the fin 4c can be prevented.

Moreover, the convex part 10j or the bead part 10k was made to contact the width direction center position of the fin 4c.
Thereby, position shift can be prevented in the state where fin 4c was stabilized.

Although the embodiments have been described above, the present invention is not limited to the above-described embodiments, and design changes and the like within the scope not departing from the gist of the present invention are included in the present invention.
For example, the shape of the convex part and the bead part, the formation position, the number of formations, etc. can be set as appropriate.

  The type of heat exchanger is not limited to a condenser, and can be applied to a heat exchanger such as a radiator, an intercooler, and an oil cooler.

It is a front view which shows the heat exchanger of Example 1. FIG. 3 is an enlarged cross-sectional view of a main part of Example 1. FIG. FIG. 3 is an exploded perspective view of a tank main body according to the first embodiment. 2 is a perspective view of a tank body according to Embodiment 1. FIG. 3 is an enlarged perspective view of a tube plate of Example 1. FIG. FIG. 3 is a side view of the tank plate of Example 1. It is sectional drawing in the S7-S7 line | wire of FIG. It is sectional drawing in the S8-S8 line | wire of FIG. 1 is a plan view of a reinforcement of Example 1. FIG. It is a front view of the reinforcement of Example 1. FIG. It is a perspective view of the edge part of the reinforcement of Example 1. FIG. FIG. 3 is a plan view of an end portion of the reinforcement according to the first embodiment. 1 is a front view of an end portion of a reinforcement of Example 1. FIG. It is sectional drawing in the S14-S14 line | wire of FIG. It is a figure explaining fixation of the reinforcement of Example 1 and a tank. It is a figure explaining fixation of the reinforcement of Example 1 and a tank.

Explanation of symbols

D1 Divide plate 1 Capacitor 2, 3 Tank 4 Core portion 4a Tube 4b, 4c Fin 5 Input connector 5a Input port 6 Output connector 6a Output port 7, 8 Connection tube 9 Receiver tank 10 Reinforce 10a Side wall 10b Connection wall 10c Central wall 10d 10f Step portion 10e Middle wall 10g End wall 10h Inclined portion 10i Opening portion 10j Protruding portion 10k Bead portion 10m Insertion portion 11 Tank body 12 Tube plate 12a (tube plate) side wall 12b (tube plate) coupling walls 12c, 12d Claw part 12e Reinforce hole 12f Tube hole 12g, 12h Guide part 13 Tank plate 13a (Tube plate) side wall 13b (Tube plate) coupling wall 13c Both shoulder parts 13d Claw locking hole 13e Vehicle mounting pin locking hole 13f Parts 13g Divide plate for locking hole 13h communicating hole 13i hole peripheral 13j side portions 13k vertical surface portion 14 onboard pin 14a pin portion 14b flange portion 14c fitting portion 14d engaging portion 14e tongue

Claims (4)

A pair of tanks arranged at predetermined intervals;
A core portion comprising a plurality of tubes having both ends inserted and fixed to the pair of tanks, and a plurality of fins laminated alternately with the tubes;
In a heat exchanger provided with a rain force that is arranged on both sides of the core portion in the stacking direction and both ends are inserted and fixed to the pair of tanks,
In the longitudinal direction of the reinforcement, a convex portion protruding from the reference surface inside the lamination direction of the core portion of the reinforcement is formed,
A heat exchanger characterized in that the convex portion is brought into contact with a fin adjacent to the reinforcement. The heat exchanger according to claim 1, wherein
The heat exchanger according to claim 1, wherein the convex portion is brought into contact with a wave-like top portion of the fin. The heat exchanger according to claim 2, wherein
The convex portion extends from the reference surface on the inner side in the lamination direction of the core portion of the reinforcement, and extends with a predetermined length in the longitudinal direction of the reinforcement, continuously or adjacent to the inner side in the longitudinal direction of the reinforcement. Forming a bead,
A heat exchanger, wherein the bead portion is brought into contact with the fin. In the heat exchanger in any one of Claims 1-3,
The heat exchanger, wherein the convex portion or the bead portion is brought into contact with a center position in the width direction of the fin.

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