JPH11118386A - Heat exchanger - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily repair defective brazing by providing a tank part comprising a closing member arranged at each end part in the longitudinal direction of first and second tank members, and integratedly brazing a tube to a fin in a furnace. SOLUTION: In a tank part 4, a tube 2 is inserted in a plurality of insertion holes 31 in a mounting wall part 32 of a U-shaped first tank member 30, and an opening part along the longitudinal direction of the first tank member 30 is covered by a second tank member 40 which is a tank plate, and an opening part at each end in the longitudinal direction of the first tank member 30 is covered by a covering member 50. The tank part 4, the tube 2 and a fin 3 are integratedly brazed in a furnace. When the brazing is defective, the brazing can be easily repaired by the torch brazing, and the tube 2 and the fin 3 can be prevented from being melted during the repair.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat exchanger, and more particularly to a heat exchanger most suitable for a vehicle radiator.

[0002]

2. Description of the Related Art A vehicle heat exchanger disclosed in Japanese Utility Model Laid-Open Publication No. 1-61582 has a heat exchanger for engine cooling water and a heat exchanger for air conditioning or other heat exchangers integrally formed. Each heat exchanger has a core composed of a plurality of tubes and fins fixed in contact with them, and a tube plate that integrally covers the ends of the tubes of the two cores. Have. A groove is formed in the periphery of the tube plate, and a skirt of a tank body made of a synthetic resin is fitted into the groove, and further tightened by caulking.

[0003] As a radiator formed similarly, a radiator disclosed in FIG. 30A is a so-called downflow radiator. Specifically, the radiator 100 has tank bodies 102 and 103 made of a synthetic resin provided above and below a core body 101 made up of a tube 104 and fins 105 made of an aluminum alloy. As shown in FIG. 30 (b), the tank main bodies 102 and 103 are formed in a groove 107 formed around an end plate 106 on which one end of the tube 104 is mounted.
Reference numeral 08 is fitted via an O-ring, and further fastened to the peripheral edge of the end plate 106 by a caulking claw 109 formed at a predetermined interval.

A radiator 100 shown in FIG.
, 110 is an inlet pipe for introducing engine cooling water into the upper tank body 102, and 111 is an outlet pipe for discharging engine cooling water from the lower tank body 103. Further, the upper tank main body 102 is provided with a cooling water inlet 116 and is closed by, for example, a cap 112 with a pressure valve. Further, an oil cooler is provided inside the lower tank main body 103, and reference numerals 114 and 115 are entrance and exit pipes.

[0005]

However, in the above-mentioned conventional structure, the tube and fin constituting the core are formed of an aluminum alloy, whereas the tank body is formed of a synthetic resin. In addition, there is a problem that the radiator itself cannot be formed into a compact shape, and the radiator itself has low recyclability.

On the other hand, a method of forming a member constituting a tank portion from an aluminum alloy and brazing the same integrally with a core in a furnace can be considered. When reworking a defective part of a brazing part by torch brazing or the like, if the brazing part between the above-mentioned members is a part close to the tube or fin side, the problem that the tube or fin melts at the time of the above-mentioned reworking. A point occurs. In addition, there is a problem in connection with an entrance / exit pipe provided in the tank portion.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a heat exchanger which has a structure which can be integrally brazed, easily repairs a defective brazing, and has a good assembling property and recyclability.

[0008]

Therefore, a heat exchanger according to the present invention is a heat exchanger including at least a tank, a tube communicating with the tank, and a fin interposed between the tubes. A first wall comprising a mounting wall on which the plurality of tubes are inserted, and a longitudinal wall extending a predetermined length from a longitudinal edge of the mounting wall in a mounting direction of the tubes. A tank member, a second tank member attached to an end of a longitudinal wall portion of the first tank member, and closing members disposed at both longitudinal ends of the first and second tank members. And at least the tank, the tube and the fins are integrally brazed in a furnace. Preferably, the tank, the tube, the fin, and the side plate are formed of an aluminum alloy.

Therefore, the tank portion into which the tube of the heat exchanger is inserted is constituted by the first tank member and the second tank member, and the first tank member and the second tank member are connected to each other. The joint brazing portion and the joint brazing portion between the closing member and the second tank member can be positioned at a predetermined distance from the side on which the tube is mounted. Since the torch brazing position and the tubes and fins can be separated from each other when the brazing is reworked, the problem that the tubes and the fins melt when the brazing is reworked can be solved. Further, since at least the tank portion, the tube, the fins, and the side plates are integrally brazed in the furnace, the heat exchanger can be easily manufactured.

Further, in the heat exchanger of the present invention, it is preferable that the first tank member and the closing member are formed separately. It is possible to easily form each member. Alternatively, the first tank member and the closing member may be integrated, and the second tank member may be mounted on the first tank member. In this case, the number of parts can be reduced, and it is not necessary to position the closing member, so that the number of working steps can be reduced.

When the closing member is formed separately from the first tank member, the closing member has a plate having an outer peripheral edge along the inner peripheral side surface of the first tank member and the second tank member. And has a first positioning projection protruding toward the mounting wall portion and a second positioning projection protruding toward the second tank member, wherein the first positioning projection is The first tank member is inserted into a first positioning hole formed at a predetermined position near a longitudinal end of the mounting wall portion, and the second positioning projection is provided in the second tank. It is to be inserted into a second positioning hole formed to penetrate a predetermined position near the longitudinal end of the member. As a result, the closing members located at both ends in the longitudinal direction of the tank can be securely held before brazing,
The brazing property can be improved.

Further, the closing member and the second tank member may be integrally formed. Thereby, the closing member can be formed at the same time when the second tank member is formed. In this case, the joint brazing portion between the end of the closing member and the first tank member is in the vicinity of the joint brazing portion between the tube and the fin. And the effect of heat on the tube can be suppressed. In addition, since the joint brazing portion between the first tank member and the second tank member is located at a predetermined distance from the joint brazing portion between the tube and the fin, there is no particular problem. is there.

Further, an inlet / outlet portion of the heat exchange medium is formed on a longitudinal wall portion of the first tank member. This can prevent the entrance / exit from being formed straddling the two members, thereby facilitating the formation of the tank.

The mounting wall of the first tank member is preferably flat, and the cross section of the first tank member is preferably substantially U-shaped. The mounting wall portion has a convex shape protruding toward the tube, and the cross section of the first tank member may be substantially U-shaped. Thereby, in the present invention, it can be said that it is preferable that the structure of the mounting wall portion on which the tube is mounted is flat or convex, from the viewpoint of molding and mechanically of the tank portion. The shape of the part does not matter.

Further, the second tank member has a concave fitting groove formed along the longitudinal direction at both ends in the short direction thereof, and the first tank member is provided in the fitting groove. Is to be inserted. As a result, the end of the longitudinal wall portion of the first tank member is inserted and locked in the fitting groove of the second tank member, so that the tank portion can be firmly attached at the time of temporary assembly before brazing. It can be assembled.

Similarly, at both ends in the short direction of the second tank member, there are stepped portions which come into contact with the inside of the end of the long wall of the first tank member and the end of the long wall. It may be a structure formed along the longitudinal direction, and a pair of abutting outer ends of the longitudinal walls of the first tank member at both ends in the short direction of the second tank member. The structure may be such that the holding wall is formed along the longitudinal direction.

The space between the two ends of the second tank member may be flat, and the space between the two ends of the second tank member may be arched.
This is because the plate-like shape facilitates the formation, and the arch-like shape can improve the mechanical strength.

Further, caulking claws are provided at both ends of the second tank member, and the caulking claws are bent along the end of the longitudinal wall portion of the first tank member to form the second tank member. The tank member and the first tank member may be temporarily assembled before brazing. First and second by caulking claw
Since the tank member can be temporarily fixed, the brazing operation can be stably performed.

Further, in the present invention, a step extending in the short direction within a predetermined range may be formed along the longitudinal direction at the tip of the long wall of the first tank member. is there. Thereby, the mechanical strength of the tip portion of the longitudinal wall portion of the first tank member can be improved, so that the effect of the above-described structure can be further improved.

Further, in the present invention, a locking projection protruding laterally is formed in the vicinity of the front end of the longitudinal wall of the first tank member, and both ends of the second tank member are provided with: A locking concave portion that fits into the locking convex portion is formed, and the first tank member and the second tank member are fitted before the brazing by fitting the locking convex portion and the locking concave portion. It is to be temporarily assembled. Thereby, while being able to improve the mechanical strength of the insertion part of a 1st tank member and a 2nd tank member, positioning between a 1st tank member and a 2nd tank member becomes easy, Further, since the displacement is eliminated, the assemblability of the tank portion can be improved.

Further, the projecting amount of the second positioning projection is smaller than the thickness of the second tank member. As a result, the positioning projection does not protrude beyond the positioning hole, and the fastening jig does not hit the positioning projection, so that the assembling operation can be performed reliably. In addition, the second
The projecting amount of the positioning projection is larger than the thickness of the second tank member to improve the mounting property of the closing member, and furthermore, the protruding portion is bent to securely hold the closing member. It is a good thing.

Further, the closing member is formed integrally with the side plate. As a result, the number of parts can be reduced. Further, the positioning member has a positioning projection protruding from an end of the closing member formed integrally with the side plate, and the positioning projection is a predetermined projection near a longitudinal end of the second tank member. Is inserted into a positioning hole formed to penetrate at the position. This makes it possible to easily dispose the closing members at both ends in the longitudinal direction of the tank portion.

Further, in the present invention, a notch portion for mounting a side plate formed integrally with the closing member is formed at an end of the mounting wall portion of the first tank member. . Thus, the side plate and the closing member can be integrally formed side by side on a straight line, so that the side plate integral with the closing member can be easily formed. Similarly, the second tank member extends in the longitudinal direction more than the first tank member by a predetermined width, and a positioning member for positioning the closing member integrally formed with the side plate at the extended portion. A positioning hole into which the projection is inserted may be formed. Further, an insertion hole through which a closing member formed integrally with the side plate is inserted may be formed near the end of the mounting wall of the first tank member.

[0024] Further, the side plate integrally formed with the closing member has an arch-shaped bypass portion that bypasses a longitudinal end of the mounting wall portion of the first tank member. Thereby, the closing member and the side plate can be integrally formed without changing the structure of the end portion of the tank portion, and the bypass portion is formed in the longitudinal direction of the mounting wall portion of the first tank member. The closing member can be positioned by contacting the end.

Further, a gap formed between the closing wall portion and the second tank member and the first tank member is provided at an end of a joint portion between the first tank member and the second tank member. It is desirable to bend outward and close, or to inwardly reduce the size. When the joint end is bent outward, the gap can be reduced because the end of the second tank member is deformed outward along the periphery of the closing wall. When the end of the joining portion is bent inward, the end of the longitudinal wall of the first tank member is deformed inward along the periphery of the closing wall, so that the gap is reduced. It can be made smaller. As a result, the gap is reliably filled with the brazing material at the time of brazing, so that brazing properties can be improved.

Further, in the present invention, the first tank member, the second tank member, and the closing wall constituting the tank are provided with a sacrificial corrosion layer on a surface located inside the tank, Is to provide a brazing material layer on the outside. The sacrificial corrosion layer is made of an aluminum alloy containing a metal having a higher ionization tendency than aluminum. As a result, since the sacrificial corrosion layer made of an aluminum alloy containing a metal having a higher ionization tendency than aluminum is provided on the surface located inside the tank portion, corrosion by the oxidation of the sacrificial corrosion layer is fast, so that the aluminum alloy is used. Corrosion of the core material of the tank can be prevented. The sacrificial corrosion layer is preferably an aluminum alloy containing zinc as a metal having a higher ionization tendency than aluminum. Specifically, it is desirable to use a 7000 or 1000 series aluminum alloy as the sacrificial corrosion layer.

Further, the brazing material layer is desirably an aluminum alloy containing silicon. This is 40
A 00-based aluminum alloy is used and is suitable as a brazing material. In addition, as a core material, 30
It is desirable to use a 00 type aluminum alloy.

As the heat exchanger having the above configuration, a cross-flow type one-pass heat exchanger or a cross-flow type two-pass heat exchanger is preferable, but other types of heat exchangers having the same problem are also preferred. It can also be used in exchangers. In the case of a one-pass heat exchanger, a pair of tanks is provided at both ends of the tube, an inlet pipe is provided above one tank, and an outlet pipe is provided below the other tank. It becomes the structure which becomes. In addition, for a two-pass type heat exchanger, a pair of tanks is disposed at both ends of the tube, and one of the tanks is divided into two tanks by a partition wall, and an inlet pipe is provided above the tank. In addition, an outlet pipe is provided below the tank portion, and an outlet pipe is provided below the one tank portion.
It is a turn passage. Further, as another type of heat exchanger, a heat exchanger having at least a tank portion having two tanks divided by a partition wall and a U-shaped tube communicating between the tanks can be considered. .

[0029]

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

FIGS. 1 (a) and 1 (b) show a one-pass cross-flow type heat exchanger, particularly used for a radiator. A heat exchanger (hereinafter, referred to as a radiator) 1 serving as a radiator includes a plurality of tubes 2 formed of an aluminum alloy and a plurality of tubes 2.
A radiator core 5 composed of fins 3 disposed in contact with the respective tubes 2 between them, and tank portions 4 (4a, 4b) disposed on both sides of the radiator core 5 and into which both ends of the tube 2 are inserted. ), Said tube 2 and fins 3
And side plates 11, 11 located at both ends in the stacking direction.

The one tank portion 4a is provided with a cooling water introducing portion 6 for introducing cooling water as a cooling fluid, and an opening of the cooling water introducing portion 6 is formed by a cap 6 having a pressure valve. The cooling water introduction part 6 is closed, and is provided with an overflow pipe 8. An inlet pipe 9 for cooling water is provided above the one tank part 4a, and the other tank part 4
An outlet pipe 10 for cooling water is provided below b.

As a result, the cooling water that has cooled the engine enters one tank portion 4a through the inlet pipe 9, passes through the tube 2 from this tank portion 4a, and enters the other tank portion 4b. During this time, heat is radiated to the air passing through the fins 3 and cooled. And it is returned to the engine side from the other tank part 4b via the outlet pipe 10. When the pressure in the tank portion 4a rises by a predetermined amount or more, the pressure valve provided in the cap 7 is opened, and the cooling water flows out from the overflow pipe 8 to adjust the pressure in the radiator 1. It is.

FIGS. 2 (a) and 2 (b)
It is a two-pass cross-flow radiator. The radiator 1 ′ includes a radiator core 5 including a plurality of tubes 2 formed of an aluminum alloy, and fins 3 disposed between the plurality of tubes 2 so as to be in contact with the respective tubes 2. And a tank portion 4 (4) to which both ends of the tube 2 are inserted.
c, 4d) and side plates 11, 11 located at both ends of the tube 2 and the fin 3 in the stacking direction.

The one tank part 4c is provided with a cooling water introduction part 6 for introducing cooling water as a cooling fluid, and the opening of the cooling water introduction part 6 is formed by a cap 6 having a pressure valve. The cooling water introduction part 6 is closed, and is provided with an overflow pipe 8. Further, the one tank part 4c is provided with the partition wall 1.
2, the upper tank 13 and the lower tank 14 are divided. A cooling water inlet pipe 9 ′ is provided above the upper tank section 13, and a cooling water outlet pipe 10 is provided below the lower tank section 14.

As a result, the cooling water that has cooled the engine enters the upper tank section 13 of one tank section 4c from the inlet pipe 9, passes through the tube 2 from the upper tank section 13 and enters the other tank section 4d. . Then, the other tank portion 4 d descends through a U-turn passage, passes through the tube 2, and enters the lower tank portion 14. Fin 3 during this time
Is radiated to the air passing through and cooled. Then, it is returned from the lower tank section 14 to the engine via the outlet pipe 10. When the pressure in the upper tank 13 increases by a predetermined amount or more, the pressure valve provided in the cap 7 opens, and the cooling water flows out of the overflow pipe 8 to adjust the pressure in the radiator 1. Things.

In the radiators 1 and 1 'having the above-described structure, the tank portion 4 according to the first embodiment is similar to that shown in FIGS.
5A, a first tank member (U-shaped member) 30 into which the tube 2 is inserted, and an opening along the longitudinal direction of the U-shaped member 30 are closed. It comprises a second tank member (tank plate) 40 and a closing member (blocking plate) 50 for closing the openings at both ends in the longitudinal direction of the U-shaped member 30.

As shown in FIG. 4, the U-shaped member 30 includes a mounting wall portion 32 having a plurality of insertion holes 31 into which the tube 2 is inserted, and a short side of the mounting wall portion 32. A longitudinal wall 33 extending a predetermined length from both ends in the direction of insertion of the tube 2. The mounting wall 3
At a predetermined position near both ends in the longitudinal direction of 2, a positioning fitting hole 34 into which a positioning projection (second projection) 52 of the closing plate 50 described below is fitted is formed.

The tank plate 40 has a flat plate portion 45 and two flat plate portions 45 at both ends in the short direction of the flat plate portion 45.
And a concave groove 42 formed along the longitudinal direction of the cover plate 50. Further, at predetermined positions near both ends in the longitudinal direction, a convex portion (first convex portion) for positioning the closing plate 50 described below is provided.
A positioning fitting hole 41 into which the fitting 51 is fitted is formed.
The concave groove 42 is formed by bending both ends of the tank plate 40 into a U-shape, and the end 35 of the longitudinal wall 33 of the U-shaped member 30 is fitted therein. Things.

Further, the closing plate 50 has a first projection 51 inserted into the fitting hole 41 and the fitting hole 3.
4 and a second convex portion 52 to be inserted thereinto is formed. When the tank plate 40 is mounted on the U-shaped member 30, the second protrusion 52 fits into the fitting hole 34, and the first protrusion 51 fits into the fitting hole 41. The U-shaped member 30 and the tank plate 4
0, the closing plate 50 is clamped and fixed.

As a result, the brazing portion between the U-shaped member 30 and the tank plate 40 is formed at a greater distance than the brazing portion between the tube 2 and the U-shaped member 30. In this case, it is possible to easily carry out rework by torch brazing or the like, and to prevent the tube 2 and the fin from melting at the time of rework.

As shown in FIG. 22, the first and second projections 51 and 52 of the shielding plate 50 are fitted with the fitting holes 41 and 3 respectively.
4 and the end 35 of the longitudinal wall 33 of the U-shaped member 30 is inserted into the groove 42 of the tank plate 40.
Since it is fitted and assembled into the device, temporary assembly before brazing can be easily performed.

As a modified example of the first embodiment, the tank plate 40A of the tank portion 4A according to the second embodiment shown in FIG. A stepped portion 43 is formed which includes a portion 44a where the inner surface of the end portion 35 of the longitudinal wall portion 33 contacts, and a portion 44b where the end surface of the end portion 35 of the longitudinal wall portion 33 contacts. Thereby, the end portions 35, 35 of the longitudinal wall portion 33 are formed.
Since the tank plate 40A is held in such a manner that the tank plate 40A is inserted, the holding force is reduced as compared with the case of the first embodiment, but it is easy to form both ends of the tank plate. Hereinafter, the same portions as those in the first embodiment and portions having the same effects are denoted by the same reference numerals, and description thereof is omitted.

As shown in FIG. 5C, the tank plate 40B of the tank portion 4B according to the third embodiment is replaced with the flat plate portion 45 of the tank plate 40 according to the first embodiment. Thus, an arch portion 46 that protrudes outward in an arc shape is employed. Thereby, the strength of the tank plate with respect to the internal pressure of the tank portion 4 can be improved.

Further, as shown in FIG. 5D, the tank plate 40C of the tank section 4C according to the fourth embodiment is similar to the tank plate 4C according to the second embodiment described above.
Instead of the flat plate portion 45 at 0A, an arch portion 46 that protrudes outward in an arc shape is employed. Thereby, the tank plate 40 according to the third embodiment is formed.
Similarly to B, the strength of the tank plate with respect to the internal pressure of the tank portion 4 can be improved.

As shown in FIG. 5E, the tank plate 40D of the tank portion 4D according to the fifth embodiment has both ends of the flat plate portion 45 bent toward the tube side to form the holding wall 47. The inner side surface 48 of the holding wall 47 is
Abutting against the outer side surface of the end portion 35 to hold the longitudinal wall portion 33 so as to wrap it from outside.
Thereby, the strength against the internal pressure in the tank portion 4 can be improved.

The tank section 4E according to the sixth embodiment is
As shown in FIG. 6, to the same configuration as the tank plate 40A of the tank portion 4A according to the second embodiment, a caulking claw portion 49 formed to project from a predetermined position at both ends is further added. It has a tank plate 40E having the configuration. After the tank plate 40E is attached to the U-shaped member 30 so as to sandwich the shielding plate 50, the swaging claw portion 49 is bent, and the longitudinal wall portion 33 of the U-shaped tank portion 30 is stepped. It is to be sandwiched and fixed between the portion 43. Thereby, the end portion 35 of the longitudinal wall portion 33 of the U-shaped tank portion 30, which is a problem of the tank portion 4A according to the second embodiment described above.
This makes it possible to eliminate the weakness of the holding force for holding the wire and to surely perform the temporary assembly before brazing in the furnace.

The tank section 4F according to the seventh embodiment is
As shown in FIG. 7, instead of the aforementioned U-shaped member 30,
At the ends of the longitudinal walls 33, 33, these longitudinal walls 3
It has a U-shaped member 30A formed with a stepped portion 36 formed so that the width between 3, 3 is widened. The concave groove portion 42 of the tank plate 40F is formed along the inner surface of the stepped portion 36. The inner wall portion 61 to be configured comes into contact with the inner wall portion 61. Further, in this embodiment, a plurality of caulking claws 49 are provided at predetermined intervals on the outer wall portion 62 constituting the groove 42, and these caulking claws 49 are attached to the outer wall 62. The U-shaped member 30A and the tank plate 40F are temporarily assembled by caulking so as to bend along the outer surface of the step portion 36.

Thus, the mounting strength of the joint surface between the U-shaped member 30A and the tank plate 40F can be improved. In this embodiment,
The shielding plate 50A is formed so as to conform to the shape of the opening defined by the U-shaped member 30A and the tank plate 40F. The groove 42
It is not necessary to strictly determine the width of the tank plate 40F, so that the formation of the tank plate 40F can be facilitated and the temporary assembly of the U-shaped member 30A and the tank plate 40F before the brazing in the furnace is ensured. Is what you can do.

The tank section 4G according to the eighth embodiment is
As shown in FIG. 8, the U-shaped member is the same as the U-shaped member 30A according to the seventh embodiment, but a tank plate 40G according to this embodiment is different from the fifth embodiment in that a tank plate 40G is provided. The claw 4 for caulking is further added to the tank plate 40E according to
9 is formed on the holding wall 47. Further, in this embodiment, the shielding plate 50B is
It is formed so as to conform to the shape of the opening defined by OA and the tank plate 40G. Thereby, the U-shaped member 30A, the tank plate 40G
And the three members of the shielding plate 50B can be securely assembled.

FIG. 9A shows a tank section 4H according to the ninth embodiment. In this embodiment, the tank plate 40H includes an arc portion 46 protruding outward in an arc shape, grooves 42 formed at both ends in the short direction of the arch portion 46, and an outer wall portion 62 of the groove portion 42. And a plurality of caulking claws 49 formed at the end. That is, this embodiment employs an arch portion 46 instead of the flat plate portion 45 of the tank plate 40F according to the seventh embodiment shown in FIG. 7, and has a pressure resistance against the internal pressure in the tank portion 4H. The structure is improved. In this embodiment, the shielding plate (not shown) is formed in a shape that matches the shape of the opening defined by the U-shaped member 30A and the tank plate 40H.

Further, in the tenth embodiment shown in FIG. 9B, the tank portion 4I is replaced by an arch portion 46 instead of the flat plate portion 45 of the tank plate 40G according to the eighth embodiment shown in FIG. The tank plate 40I is used to improve the pressure resistance of the tank portion. In this embodiment, the shielding plate (not shown) is formed in a shape that matches the shape of the opening defined by the U-shaped member 30A and the tank plate 40I.

The tank portion 4J according to the eleventh embodiment shown in FIG. 9C has a mounting wall portion 32, a longitudinal wall portion 33 and a stepped portion 36A, and a crimping claw portion is provided at the tip of the stepped portion 36A. A U-shaped member 30B formed with 49A and a tank plate 40J having holding walls 47A abutting on the inside of the stepped portion 36A at both ends in the short direction of the flat plate portion 45, and the tank plate 40J is Step 36
A, 36A, so that the stepped portion 36A, 3
6A, and both ends in the short direction are swaged and held by the plurality of swaging claws 49A. The shielding plate (not shown) has a shape that matches the shape of the opening defined by the U-shaped member 30B and the tank plate 40J. Thus, in this embodiment, the manufacture of the tank plate 40J can be simplified.

The tank portion 4K according to the twelfth embodiment shown in FIG. 9D has a mounting wall portion 32, a longitudinal wall portion 33, and a stepped portion 36A, and a crimping claw portion is provided at the tip of the stepped portion 36B. A U-shaped member 30C formed with 49A and a tank plate 40K including only the flat plate portion 45 are provided, and the tank plate 40K is connected to the step portions 36B, 3B.
It is inserted between the stepped portions 36B, 36B so as to be sandwiched between 6B, and both ends in the short direction are swaged and held by the plurality of swaging claws 49A.
A shielding plate (not shown) is provided with the U-shaped member 3.
The shape conforms to the shape of the opening defined by the tank plate 40K and the tank plate 40K. Thereby, the manufacture of the tank plate 40K can be extremely simplified.

The tank portion 4L according to the thirteenth embodiment shown in FIG. 10A has a mounting wall portion 32, a longitudinal wall portion 33, a shielding plate (not shown), and an outer portion near the end of the longitudinal wall portion 33. U-shaped member 3 having locking projection 37 projecting toward
0D, the flat plate portion 45, the groove portion 42A, and the groove portion 42A.
And a tank plate 40L having a locking concave portion 63 which engages with the locking convex portion 37 on the outer wall portion 62A. This allows the tank plate 40
It is possible to improve the mountability between L and the U-shaped tank portion 30D.

The tank section 4M according to the fourteenth embodiment shown in FIG. 10 (b) comprises a mounting wall section 32, a long wall section 33, a shielding plate (not shown), and the long wall section 3.
3 and a U-shaped member 30E having a locking recess 38 protruding inward in the vicinity of the end of the flat portion 45, the flat portion 45, the groove portion 42B, and the outer wall portion 62B constituting the groove portion 42B. It has a tank plate 40M having a locking projection 64 projecting inward so as to engage. Thereby, the mountability between the tank plate 40M and the U-shaped tank portion 30E can be improved. Further, in this embodiment, since the locking concave portion 38 has a shape protruding inward, the inner wall portion 61 of the groove portion 42B of the tank plate 40M has a convex portion formed inside the locking concave portion 38. Since they are in contact with each other along the shape, the joined state of the two can be improved.

Further, the tank portion 4N according to the fifteenth embodiment shown in FIG. 10C is different from the flat plate portion 4 of the tank plate 40L according to the embodiment shown in FIG.
Instead of 5, a tank plate 40 </ b> N having an arch part 46 protruding outward is employed. Thereby, the pressure resistance of the tank portion 4N can be improved.

The tank portion 4P according to the sixteenth embodiment shown in FIG. 10D is different from the flat plate portion 45 of the tank plate 40M according to the embodiment shown in FIG. 10B.
, A tank plate 40P having an outwardly projecting arch portion 46 is employed. Thereby, the pressure resistance of the tank portion 4P can be improved.

The radiator 1 ″ shown in FIG. 11 is different from the above-described radiators 1 and 1 ′ in that the U-shaped member 30 ′ is used instead of the U-shaped member 30 that forms the tank 4. By using the U-shaped member 30 ', pressure resistance and mechanical strength on the tube side can be improved.
The other parts except for the tank part 4 'described below are the same as those of the radiators 1 and 1' described above.

In the radiator 1 ″ having the above configuration, the first
The tank portion 4 'according to the seventh embodiment is shown in FIGS.
14 (a), the first tank member (U-shaped member) 70 into which the tube 2 is inserted, and the opening along the longitudinal direction of the U-shaped member 70 are closed. Second
Of the U-shaped member 30 and a closing member (blocking plate) 80 for closing openings at both ends in the longitudinal direction of the U-shaped member 30.

As shown in FIG. 13, the U-shaped member 70 has a mounting wall portion 72 having a plurality of insertion holes 71 into which the tube 2 is inserted and curved in an arc shape, and the mounting wall portion 72. A longitudinal wall portion 73 extends from both ends of the portion 72 in the insertion direction of the tube 2 by a predetermined length. Further, at predetermined positions near both ends in the longitudinal direction of the mounting wall portion 72, a positioning fitting hole 74 into which a positioning convex portion (second convex portion) 82 of the closing plate 50 described below fits. It is formed.

The tank plate 40 has a flat plate portion 45 and two flat plate portions 45 at both ends in the short direction of the flat plate portion 45.
And a concave groove 42 formed along the longitudinal direction of the cover plate 50. Further, at predetermined positions near both ends in the longitudinal direction, a convex portion (first convex portion) for positioning the closing plate 50 described below is provided.
A fitting hole 41 for positioning into which 81 is fitted is formed.
The concave groove 42 is formed by bending both ends of the tank plate 40 into a U-shape.
The end portion 75 of the longitudinal wall portion 73 of the letter-shaped member 70 is to be fitted.

Further, the closing plate 80 is provided with a first projection 81 inserted into the fitting hole 41 and the fitting hole 7.
4 is formed, and the side on the side where the second convex portion 82 is formed has a shape along the shape of the mounting wall portion 72 of the front U-shaped member 70. It has been formed. When the tank plate 80 is mounted on the U-shaped member 70, the second projection 82 fits into the fitting hole 74, and the first projection 81 fits into the fitting hole 41. The U-shaped member 70 and the tank plate 4
0, the closing plate 80 is clamped and fixed.

As a result, the brazed portion between the U-shaped member 70 and the tank plate 40 is formed at a greater distance than the brazed portion between the tube 2 and the U-shaped member 70. In this case, it is possible to easily carry out rework by torch brazing or the like, and to prevent the tube 2 and the fin from melting at the time of rework.

The first and second projections 81 and 82 of the shielding plate 80 are fitted into the fitting holes 41 and 34, and the end 75 of the longitudinal wall 73 of the U-shaped member 70 is Since it is fitted into the groove 42 of the plate 40 and assembled, temporary assembly before brazing can be easily performed.

As a modification of the seventeenth embodiment,
The tank plate 40A 'of the tank portion 4A' according to the eighteenth embodiment shown in FIG. 14B has the inner surface of the end portion 75 of the long wall portion 73 at both ends in the short direction of the flat plate portion 45. A stepped portion 43 is formed which comprises a contacting portion 44a and a portion 44b where the end face of the end portion 35 of the longitudinal wall portion 33 contacts. Thereby, the end portion 7 of the longitudinal wall portion 73 is formed.
Since the tank plate 40A 'is held so as to fit between 5, 75, the holding force is lower than in the case of the seventeenth embodiment, but the formation of both ends of the tank plate is easy. It is.

The tank section 4B 'according to the nineteenth embodiment.
As shown in FIG. 14 (c), instead of the flat plate portion 45 of the tank plate 40 according to the seventeenth embodiment, the tank plate 40B ′ has an arch portion 46 that protrudes outward in an arc shape. Is adopted. Thereby, the strength of the tank plate with respect to the internal pressure of the tank portion 4 can be improved.

Further, as shown in FIG. 14D, the tank plate 40C 'of the tank portion 4C' according to the twentieth embodiment is the same as the tank plate 40A 'according to the eighteenth embodiment. Instead of the flat plate portion 45, an arch portion 46 that protrudes outward in an arc shape is employed. Thus, similarly to the tank plate 40B ′ according to the nineteenth embodiment, the strength of the tank plate with respect to the internal pressure of the tank unit 4 can be improved.

The tank part 4D 'according to the twenty-first embodiment
As shown in FIG. 14E, both ends of the flat plate portion 45 are bent toward the tube side to form a holding wall 47, and the inner side surface 48 of the holding wall 47 is connected to the longitudinal wall portion 73. Abutting against the outer side surface of the end portion 75 to hold the longitudinal wall portion 73 so as to wrap it from outside. Thereby, the strength against the internal pressure in the tank portion 4 can be improved.

The tank section 4E 'according to the twenty-second embodiment.
As shown in FIG. 15 (a), the same configuration as the tank plate 40A of the tank portion 4A 'according to the eighteenth embodiment is used, and furthermore, a caulking protrudingly formed from predetermined positions at both ends. It has a tank plate 40E having a configuration to which a claw portion 49 is added. And the U-shaped member 7
After the tank plate 40E is mounted so as to sandwich the shielding plate 50 at 0, the caulking claw portion 49 is bent, and the longitudinal wall portion 73 of the U-shaped member 70 is sandwiched between the step portion 43 and the U-shaped member 70. It is intended to be fixed.

This eliminates the weakness of the holding force for holding the end 75 of the longitudinal wall 73 of the U-shaped member 70, which is a problem of the tank 4A ′ according to the eighteenth embodiment. In addition, temporary assembling before brazing in a furnace can be reliably performed. In this embodiment, the shielding plate (not shown) has a shape that matches the shape of the opening defined by the U-shaped member 70 and the tank plate 40E.

The tank section 4F according to the twenty-third embodiment.
As shown in FIG. 15B, the U-shaped member 7 described above is used.
A U-shaped member 70A having a stepped portion 76 formed so that the width between the longitudinal walls 73, 73 is increased at the ends of the longitudinal walls 73, 73 in place of 0. Therefore, along the inner surface of this step 76, the tank plate 40
The inner wall portion 61 of the F-shaped concave groove portion 42 comes into contact. Further, in this embodiment, a plurality of caulking claws 49 are provided at predetermined intervals on the outer wall portion 62 constituting the groove 42, and these caulking claws 49 are attached to the outer wall 62. The U-shaped member 70A and the tank plate 40F are temporarily assembled by caulking so as to bend along the outer surface of the step portion 76. In this embodiment, the shielding plate (not shown) is formed in a shape that matches the shape of the opening defined by the U-shaped member 70A and the tank plate 40F.

Thus, the mounting strength of the joint surface between the U-shaped member 70A and the tank plate 40F can be improved. Further, since it is not necessary to strictly determine the width of the groove portion 42, the tank plate 4
OF can be easily formed, and U
The temporary assembly before brazing in a furnace between the letter-shaped member 70A and the tank plate 40F can be performed.

The tank section 4G 'according to the twenty-fourth embodiment.
As shown in FIG. 15C, the U-shaped member is the same as the U-shaped member 70A according to the twenty-third embodiment, but the tank plate 40G according to this embodiment is the same as the U-shaped member 70A. In the tank plate 40E according to the twenty-first embodiment, a caulking claw portion 49 is further formed on the holding wall 47. Thereby, the three members of the U-shaped member 70A, the tank plate 40G, and the shielding plate can be securely assembled. In this embodiment, a shielding plate (not shown) corresponds to the U-shaped member 7.
0A and the shape of the opening defined by the tank plate 40G.

FIG. 16A shows a tank section 4H 'according to the twenty-fifth embodiment. In this embodiment, the tank plate 40H includes an arc portion 46 that protrudes outward in an arc shape, a groove portion 42 formed at both ends in the short direction of the arch portion 46, and an outer wall portion 62 of the groove portion 42.
And a plurality of caulking claws 49 formed at the end of the head. That is, this embodiment is different from FIG.
An arch portion 46 is employed in place of the flat plate portion 45 of the tank plate 40F according to the twenty-third embodiment shown in FIG. 23 (b) to improve the pressure resistance against the internal pressure in the tank portion 4H '. Is what it is. In this embodiment, the shielding plate (not shown) has a shape that matches the shape of the opening defined by the U-shaped member 70A and the tank plate 40H.

Further, in the twenty-sixth embodiment shown in FIG. 16B, the tank portion 4I 'is replaced with the flat plate portion 45 of the tank plate 40G according to the twenty-fourth embodiment shown in FIG. Tank plate 4 having an arch part 46
0I is adopted, thereby improving the pressure resistance of the tank portion. In this embodiment, the shielding plate (not shown) is also provided with the U-shaped member 70.
A and a shape that matches the shape of the opening defined by the tank plate 40I.

A tank part 4J 'according to the twenty-seventh embodiment shown in FIG. 16C has a mounting wall 72, a longitudinal wall 73, and a step 76A, and has a caulking claw at the tip of the step 76A. A U-shaped member 70B having a portion 49A formed thereon and a tank plate 40J having holding walls 47A abutting inside the stepped portion 36A at both ends in the short direction of the flat plate portion 45, and the tank plate 40J is formed. The stepped portion 76 is sandwiched between the stepped portions 76A, 76A.
A, 76A, and both ends in the short direction are caulked and held by the plurality of caulking claws 49A. The shielding plate (not shown) has a shape that matches the shape of the opening defined by the U-shaped member 70B and the tank plate 40J. Thus, in this embodiment, the manufacture of the tank plate 40J can be simplified.

A tank portion 4K 'according to the twenty-eighth embodiment shown in FIG. 16D has a mounting wall 72, a longitudinal wall 73, and a step 76A, and has a caulking claw at the tip of the step 76B. U-shaped member 70C in which a portion 49A is formed, and a tank plate 40K including only a flat plate portion 45, and the tank plate 40K is
B, 76B so as to be sandwiched between them.
6B, and both ends in the short direction are swaged and held by the plurality of swaging claws 49A. The shielding plate (not shown) has a shape that matches the shape of the opening defined by the U-shaped member 70C and the tank plate 40K. Thereby, the manufacture of the tank plate 40K can be extremely simplified.

A tank part 4L ′ according to the twenty-ninth embodiment shown in FIG. 17A has a mounting wall 72, a longitudinal wall 73,
A U-shaped member 70D having a shielding plate (not shown) and a locking projection 77 protruding outward in the vicinity of an end of the longitudinal wall portion 73, a flat plate portion 45, a groove portion 42A, and the groove portion 4;
The tank plate 40L has an outer wall portion 62A constituting the 2A and a locking concave portion 63 which engages with the locking convex portion 77. Thereby, the mountability between the tank plate 40L and the U-shaped tank portion 30D can be improved.

The tank section 4M 'according to the thirtieth embodiment shown in FIG. 17 (b) comprises a mounting wall section 72, a long wall section 73, a shielding plate (not shown), and an end of the long wall section 73. The U-shaped member 70E having a locking recess 78 protruding inward in the vicinity of the portion, and the flat recess 45, the groove 42B, and the outer wall 62B constituting the groove 42B are engaged with the locking recess 78. Thus, the tank plate 40M having the locking convex portion 64 protruding inward as described above. Thereby, the mountability between the tank plate 40M and the U-shaped tank portion 30E can be improved. Further, in this embodiment, since the locking concave portion 78 has a shape protruding inward, the inner wall portion 61 of the groove portion 42B of the tank plate 40M has a convex portion formed inside the locking concave portion 78. Since they are in contact with each other along the shape, the joined state of the two can be improved.

Further, the tank part 4N 'according to the thirty-first embodiment shown in FIG.
Instead of the flat plate portion 45 of the tank plate 40L according to the embodiment shown in FIG. 1, a tank plate 40N having an arch portion 46 projecting outward is employed. Thereby, the pressure resistance of the tank portion 4N 'can be improved.

The tank portion 4P 'according to the thirty-second embodiment shown in FIG. 17D is different from the flat plate portion 45 of the tank plate 40M according to the thirtieth embodiment shown in FIG. , A tank plate 40P having an outwardly projecting arch portion 46 is employed. Thereby, the pressure resistance of the tank portion 4P 'can be improved.

The embodiment shown in FIGS. 18 to 21 is characterized in that the side plate and the closing plate are integrally formed, and the side plate also serves as the closing plate, thereby maintaining the position of the closing plate. In addition to the simplicity, the number of parts can be reduced. In addition, in the embodiments shown in FIGS. 18 to 21, a description will be given by using a tank portion using a U-shaped member as the first tank member, but a U-shaped member or another tank plate may be used. The same can be applied to the tank portion that has been used.

A tank portion 4Q according to the thirty-first embodiment shown in FIG. 18 has an opening 91 defined by a U-shaped member 30F and a tank plate 40 by a side plate 11A integrally formed with a closing plate. Is to close. In this embodiment, cutouts 90 through which the side plates 11A are inserted are formed at both longitudinal ends of the mounting wall 32A of the U-shaped member 30F. As a result, the side plate 11A is positioned by inserting the notch 90 into the fitting hole 41 so that the positioning projection 51A formed at the tip of the side plate 11A is inserted into the fitting hole 41. Wall 32A
Since the side plate 11A can be held by the both ends in the longitudinal direction, the assembly before brazing can be easily performed.

The tank 4R according to the thirty-second embodiment shown in FIG. 19 has the U-shaped member 30G cut off at both ends in the longitudinal direction to shorten the longitudinal length by a predetermined width, or The longitudinal length of the tank plate 40 is formed to be long at a predetermined width. In this embodiment, the end plate 11B is provided with the U-shaped member 30G.
Needs to have a width in contact with the longitudinal end of the U-shaped member 3 on both sides of the side plate 11A.
It is wider by a thickness of 0G. As a result, the side plate 11B is positioned and held by the longitudinal end 92 of the U-shaped member 30G, and a positioning projection 51A formed at the tip of the side plate 11B is formed on the tank plate 40. Fitting hole 4
1, the opening 91 can be reliably closed.

Further, in the tank portion 4S according to the thirty-fifth embodiment shown in FIG. 20, the closing plate is integrally formed at a predetermined position near both ends in the longitudinal direction of the mounting wall portion 32B of the U-shaped member 30H. This is one in which an insertion hole 96 through which the molded side plate 11A is inserted is formed. This insertion hole 96
By forming, the side plate 11A can be held from both directions, so that the assemblability can be improved.

Further, the tank part 4T according to the thirty-sixth embodiment shown in FIG. 21 has a shielding part 54 formed integrally with the side plate 11C via an arched bypass part 55. Thereby, the side plate 11C and the shielding portion 54 can be integrally formed by forming only the side plate 11C side without making the U-shaped member 30 a special structure, so that the tank portion 4T can be easily formed. It becomes.

The shielding plate 50C of the tank unit 4U according to the thirty-seventh embodiment shown in FIG. 23 is different from the first convex portion 51 of the shielding plate 50 shown in FIG. The protrusion Dp is formed to be small. Specifically, the protrusion amount Dp is formed to be smaller than the depth Dh of the fitting hole 41 (the thickness of the tank plate 40), and the first protrusion 51A is absolutely formed from the fitting hole 41. To prevent it from protruding. This prevents the fastening jig from hitting the convex portion in the event that the first convex portion protrudes from the fitting hole 41, thereby preventing a problem in joining the three members constituting the tank portion. You can do it.

On the other hand, in the tank part 4Y according to the thirty-eighth embodiment shown in FIG. 24, the projecting amount of the first convex part 51B of the closing plate 50D is made larger than the thickness of the tank plate 40. It is formed in. Thereby, the mountability of the first convex portion 51B is improved, and the portion protruding from the fitting hole 41 is bent or spread out to close the closing plate 50D.
Can be increased, and the above-mentioned collision of the fastening jig can be prevented.

FIG. 25 (a) shows a U-shaped member 30,
This shows that when the closing plate 50 and the tank plate 40 are joined together, a gap 95 is formed between these three components. This gap is normally closed by brazing material flowing in at the time of brazing, but there is a case where the above-described gap 95 occurs due to a shortage of the brazing material or a problem of the brazing flow.

As a countermeasure in this case, the tank portion 4V according to the thirty-ninth embodiment shown in FIG. The portion 61 extends outward along the gap 95 so as to reduce the gap 95. By making the gap 95 small, a brazing material flows in at the time of brazing and is easily blocked.

The tank portion 4W according to the fortieth embodiment shown in FIG. 25 (c), on the other hand, discloses that the longitudinal ends of the groove 42 are twisted inward. The gap 95 is reduced by twisting the end 35 of the portion 33 inward along the gap 95. This allows the brazing material to reliably fill the gap at the time of brazing, thereby preventing poor brazing.

The closing plate 50D of the tank portion 4X according to the forty-first embodiment shown in FIGS. 26A and 26B has a projecting portion 57 which is formed so as to correspond to the gap 95 in advance. Thus, the gap 95 is filled.

The tank portion 4Z according to the forty-second embodiment shown in FIG. 27 is obtained by integrally molding a closing plate and a tank plate. The closing plate portion 50Z formed at the end of the tank plate portion 40Z is formed as follows. It is formed by bending vertically at both ends. As a result, the number of parts can be reduced.

FIGS. 28A and 28B are characterized in that a sacrificial corrosion layer 84 is formed on the surface located inside the tank. For this reason, the first tank member, the second tank member, and the plate forming the closing member that constitute the tank part have a two-layer structure or a three-layer structure made of an aluminum alloy.

FIG. 28A shows, for example, that the tank plate 40 has a two-layer structure of a core material 86 and a sacrificial corrosion layer 84, and the U-shaped tank member 30 has a brazing material layer 85 and a core material 8.
6 and a sacrificial corrosion layer 84. 27B shows a U-shaped member 30B having a two-layer structure of a core 86 and a sacrificial corrosion layer 84, for example.
The tank plate 40J has a three-layer structure of a brazing material layer 85, a core material 86, and a sacrificial corrosion layer 84. FIG.
9, the closing plate 50 also has
In this embodiment, the sacrificial corrosion layer 84 is formed on the side surface located inside the tank portion. In this embodiment, the closing plate 50 has three layers including a brazing material layer 85, a core material 86, and a sacrificial corrosion layer 84. It has a structure.

In the embodiment of the present invention, the core material is formed of a 3000 series aluminum alloy, the brazing material is formed of a 4000 series aluminum alloy containing silicon, and the sacrificial corrosion layer contains zinc. It is formed of a 7000 series or 1000 series aluminum alloy.

From the above, since the sacrificial corrosion layer 84 is located inside the tank portion, the sacrificial corrosion layer 84 corrodes faster than other aluminum alloys to form an oxide film. It can prevent corrosion.

[0098]

As described above, according to the present invention, since the radiator has a structure that can be integrally brazed, the assembly cost can be reduced and the recyclability can be improved.

Further, since the brazing portion of the component constituting the tank portion is located at a position away from the tube and the fin side, it is easy to rework the defective brazing portion.
It is possible to prevent a problem that the tube or the fin is melted during a reworking operation by torch brazing or the like.

Further, since the components constituting the tank portion can be simplified, the cost of the tank mold can be reduced.

Further, by making the tube mounting side arc-shaped, the pressure resistance and the mechanical strength can be improved. Furthermore, by making the tank plate disposed opposite to the tube mounting side into an arch shape, the pressure resistance and the mechanical strength of the tank plate can be improved.

Further, the parts constituting the tank part, in particular, the first
Since the caulking claw portion is provided on one of the tank member and the second tank member and caulked and fixed, it is possible to prevent displacement of the two parts during brazing.

Further, by forming an uneven engagement portion at the joint between the first tank member and the second tank member constituting the tank portion, positioning and assembling of the two parts are facilitated. The displacement at the time of attachment can be prevented.

Further, a positioning projection is formed on a closing plate formed separately from the first tank member.
Since the mating hole of the convex portion is formed in the mating member, the positioning of the closing plate can be facilitated,
It is possible to improve the assemblability and to prevent brazing failure.

Further, the projecting amount of the projection on the side of the second tank member of the closing plate is set smaller than the depth of the fitting hole (the thickness of the plate). Since the protrusion can be prevented, the fastening jig can be prevented from hitting the convex portion, and the joining of the three members constituting the tank portion can be ensured. Conversely, by making the convex portion larger than the depth of the fitting hole, the convex portion protrudes from the fitting hole, and this protruding portion is bent or spread out, thereby closing the closing plate with the second tank. Since the fixing jig is fixed to the member, it is possible to prevent the above-mentioned tightening jig from hitting the convex portion, and to surely join the three members constituting the tank portion.

Further, the gap formed between the closing plate and both ends of the second tank member with which the ends of the first tank member are engaged is closed by twisting the both ends. , Which can improve the brazing property.

Further, by forming a sacrificial corrosion layer on the inner surface of the tank, the corrosion resistance inside the tank can be improved, so that the durability of the tank can be improved.

[Brief description of the drawings]

FIG. 1A is a front view of a one-pass radiator according to an embodiment of the present invention, and FIG. 1B is a side view thereof.

FIG. 2A is a front view of a two-pass radiator according to an embodiment of the present invention, and FIG. 2B is a side view thereof.

FIG. 3 is a partially enlarged perspective view showing the vicinity of one end of a tank portion according to the first embodiment of the present invention having a U-shaped member as a first tank member.

FIG. 4 is a partially enlarged exploded perspective view of the tank section according to the first embodiment.

FIGS. 5 (a) to 5 (e) show a U-shaped member as a first tank member and a tank plate (second
(A) is a cross-sectional view of a tank portion according to the first embodiment in which a tank plate has a groove portion and a flat plate portion, and (b) is a cross-sectional view of the tank member. It is sectional drawing of the tank part which concerns on 2nd Embodiment in which a tank plate has a step part and a flat part, (c) concerns on 3rd Embodiment in which a tank plate has a groove part and an arch part. It is sectional drawing of a tank part, (d) is sectional drawing of the tank part which concerns on 4th Embodiment in which a tank plate has a step part and an arch part, (e) is a tank plate with a flat plate part. It is sectional drawing of the tank part which concerns on 5th Embodiment which has a holding wall.

FIG. 6 shows a sixth example including a U-shaped member (first tank member) and a tank plate (second tank member) having a flat plate portion, a groove portion, and a claw for caulking. It is a partially expanded perspective view of the tank part which shows Embodiment of this invention.

FIG. 7 shows a U-shaped member (first tank member) having steps at both ends in the short direction and a second tank member having a flat plate portion, a groove portion and a claw portion for caulking. FIG. 21 is a partially enlarged perspective view showing a tank section according to a seventh embodiment provided with the above.

FIG. 8 shows a U-shaped member (first tank member) having steps at both ends and a second tank member having a flat plate portion, a holding wall, and a claw portion for caulking. Eighth equipped
It is a partially expanded perspective view which shows the tank part which concerns on embodiment.

FIG. 9A includes a U-shaped member (first tank member) having a step portion and a tank plate (second tank member) having an arch portion, a groove portion, and a claw portion for caulking. It is sectional drawing of the tank part which concerns on 9th Embodiment, (b).
The tenth embodiment includes a U-shaped member (first tank member) having a step portion and a tank plate (second tank member) having an arch portion, a holding wall, and a claw portion for caulking. It is sectional drawing of such a tank part, (c) is a U-shaped member (1st tank member) which has a step part and the claw part for caulking.
It is sectional drawing of the tank part which concerns on 11th Embodiment provided with the tank plate (2nd tank member) which has a flat plate part and a holding wall, (d) is for a step part and caulking. U-shaped member having claw portion (first tank member)
It is a sectional view of a tank part concerning a 12th embodiment provided with a tank plate (2nd tank member) consisting only of a flat part.

FIG. 10A shows a U-shaped member (first tank member) having convex portions projecting from the outer surfaces of both ends, a groove portion having a concave portion engaging with the convex portion, and a flat plate portion. FIG. 32 is a cross-sectional view of a tank portion according to a thirteenth embodiment including a tank plate (second tank member) having a U-shape having a concave portion formed in the outer surface of both ends. Tank member (first tank member), a tank plate (second tank member) having a groove portion and a flat plate portion formed with a convex portion engaging with the concave portion.
(C) is a cross-sectional view of a tank portion according to a fourteenth embodiment including a U-shaped member (a first tank member) having convex portions protruding on outer surfaces of both ends. )
FIG. 25 is a cross-sectional view of a tank unit according to a fifteenth embodiment, comprising: a tank plate (second tank member) having a groove and an arch formed with a concave portion that engages with the convex portion; (D) is a U-shaped member (first tank member) having a concave portion formed on the outer surface of both ends and a tank having a groove portion and an arch portion formed with a convex portion engaging with the concave portion. It is sectional drawing of the tank part which concerns on 16th Embodiment provided with a plate (2nd tank member).

FIG. 11 is a plan view of a radiator having a tank portion according to a seventeenth embodiment using a U-shaped member instead of the U-shaped member.

FIG. 12 is a partially enlarged perspective view showing the vicinity of one end of a tank section according to a seventeenth embodiment of the present invention having a U-shaped member as a first tank member.

FIG. 13 is a partially enlarged exploded perspective view of a tank section according to the seventeenth embodiment.

FIGS. 14 (a) to (e) show modifications of a U-shaped member as a first tank member and a tank plate (second tank member) to be mounted. a)
The tank plate has a groove portion and a flat plate portion;
It is sectional drawing of the tank part which concerns on 7th Embodiment, (b).
FIG. 33 is a cross-sectional view of a tank portion according to an eighteenth embodiment in which the tank plate has a step portion and a flat plate portion.
It is sectional drawing of the tank part which concerns on 19th Embodiment in which a tank plate has a groove part and an arch part, (d) concerns on 20th Embodiment in which a tank plate has a step part and an arch part. It is sectional drawing of a tank part, (e) is sectional drawing of the tank part which concerns on 21st Embodiment which a tank plate has a flat plate part and a holding wall.

FIG. 15 (a) is a U-shaped member (first tank member)
FIG. 27B is a partially enlarged perspective view of a tank portion showing a twenty-second embodiment including a tank plate (second tank member) having a flat plate portion, a groove portion, and a claw for caulking, and (b).
Is a U-shaped member having a step at both ends in the short direction (first
(C) is a partially enlarged perspective view showing a tank portion according to a twenty-third embodiment including a second tank member having a flat plate portion, a groove portion, and a claw portion for caulking.
U-shaped member having steps at both ends (first tank member)
FIG. 33 is a partially enlarged perspective view showing a tank portion according to a twenty-fourth embodiment including a flat plate portion, a holding wall, and a second tank member having a swaging claw portion.

FIG. 16 (a) includes a U-shaped member (first tank member) having a step portion and a tank plate (second tank member) having an arch portion, a groove portion, and a claw portion for caulking. It is sectional drawing of the tank part which concerns on 25th Embodiment,
(B) is a U-shaped member having a step (first tank member)
It is sectional drawing of the tank part which concerns on the 26th Embodiment provided with the tank part (2nd tank member) which has an arch part, a holding wall, and the nail | claw part for caulking, and (c) is a step part. And a U-shaped member (a first tank member) having a claw portion for caulking and a tank plate (a second tank member) having a flat plate portion and a holding wall according to the twenty-seventh embodiment. It is sectional drawing of a tank part, (d) is a U-shaped member (1st tank member) which has a step part and the claw part for caulking, and a tank plate (2nd tank member) which consists only of a flat plate part. It is a sectional view of a tank part concerning a 28th embodiment provided with.

FIG. 17 (a) shows a U-shaped member (first tank member) having convex portions projecting from the outer surfaces of both ends, and a groove portion and a flat plate portion formed with a concave portion engaging with the convex portion. 29B is a cross-sectional view of a tank section according to a twenty-ninth embodiment including a tank plate (second tank member) having a U-shape having concave portions formed on both outer side surfaces. FIG. Tank member (first tank member), a tank plate (second tank member) having a groove portion and a flat plate portion formed with a convex portion engaging with the concave portion.
(C) is a cross-sectional view of a tank portion according to a thirtieth embodiment including a U-shaped member (a first tank member) having convex portions protruding on outer surfaces of both ends. )
FIG. 35 is a cross-sectional view of a tank portion according to a thirty-first embodiment, comprising: a tank plate (second tank member) having a groove portion and an arch portion formed with a concave portion that engages with the convex portion; (D) is a U-shaped member (first tank member) having a concave portion formed in the outer surface of both ends and a tank having a groove portion and an arch portion formed with a convex portion engaging with the concave portion. It is a sectional view of a tank part concerning a 32nd embodiment provided with a plate (2nd tank member).

FIG. 18 is a cross-sectional view of a thirty-third embodiment in which a side plate and a closing plate are integrally formed and a cutout portion is formed in a first tank member.
It is explanatory perspective view which showed the tank part which concerns on embodiment.

FIG. 19 illustrates a tank portion according to a thirty-fourth embodiment in which a side plate and a closing plate are integrally formed, and a second tank member extends in a predetermined width longitudinal direction from a first tank member. It is the explanatory perspective view shown.

FIG. 20 is an explanatory perspective view showing a tank portion according to a thirty-fifth embodiment in which a side plate and a closing plate are integrally formed and an insertion hole is formed in a first tank member.

FIG. 21 is an explanatory perspective view showing a tank part according to a thirty-sixth embodiment in which a side plate closing plate is integrally formed via a bypass part.

FIG. 22 is a cross-sectional view of the tank portion according to the first embodiment illustrating the shape of a closing plate that closes an opening defined by a U-shaped member and a tank plate.

FIG. 23 is a cross-sectional view showing a tank portion according to a thirty-seventh embodiment in which the amount of protrusion of a positioning projection is reduced in the closing plate shown in FIG. 22;

FIG. 24 is a cross-sectional view showing a tank portion according to a thirty-eighth embodiment in which the amount of projection of a positioning projection is increased in the closing plate shown in FIG. 22;

FIG. 25A is an explanatory diagram illustrating a state of a gap generated between a closing plate and first and second tank members, and FIG. 25B is a diagram illustrating an example in which an end is twisted outward to reduce the gap. It is explanatory drawing of the tank part which concerns on the thirty-ninth embodiment which made small, and (c) is explanatory drawing of the tank part which concerns on the fortieth embodiment which reduced the clearance gap by twisting an end part inward.

FIG. 26A is a view showing a state in which the closing plate is first and second.
FIG. 47 is an explanatory sectional view of a tank portion according to a forty-second embodiment formed along the inner peripheral side surface of the tank member of FIG.

FIG. 27 is a partially enlarged perspective view of a tank portion according to a forty-third embodiment in which the closing plate and the tank plate are integrally formed.

FIG. 28 (a) is an enlarged explanatory view showing a part of a joint portion of a tank portion formed by a first tank member having a three-layer structure and a second tank member having a two-layer structure. And (b) is an enlarged explanatory view showing a part of a joint portion of a tank portion formed by a first tank member having a two-layer structure and a second tank member having a three-layer structure.

FIG. 29 is a partially enlarged perspective view showing a closing plate having a three-layer structure.

FIG. 30A is a perspective view showing an example of a conventional radiator, and FIG. 30B is a partially enlarged sectional perspective view.

[Explanation of symbols]

 1, 1 ', 1 "radiator 2 tube 3 fin 4 tank portion 5 radiator core 9 inlet pipe 10 outlet pipe 11 side plate 12 partition wall 30 U-shaped member (first tank member) 31 insertion hole 32 mounting wall portion 33 longitudinal wall portion 34 fitting hole 35 end portion 40 tank plate (second tank member) 41 fitting hole 42 groove portion 43 step portion 45 flat plate portion 46 arch portion 49 crimping claw portion 50 closing plate (blocking member) 51, 52 Convex part 70 U-shaped member 84 Sacrificial corrosion layer 85 Brazing material layer 86 Core material

Claims (28)

[Claims] 1. A heat exchanger comprising at least a tank part, a tube communicating with the tank part, and a fin interposed between the tubes, wherein the plurality of tubes are inserted into the tank part. A first tank member comprising a mounting wall portion and a longitudinal wall portion extending a predetermined length from the longitudinal edge of the mounting wall portion in the tube mounting direction, and a longitudinal wall end of the first tank member; A second tank member attached to the portion, and closing members disposed at both longitudinal end portions of the first and second tank members, wherein at least the tank portion, the tube, and the fin are integrated with each other. A heat exchanger characterized by being brazed in a furnace. 2. The heat exchanger according to claim 1, wherein the first tank member and the closing member are formed separately. 3. The first positioning member having a plate shape having an outer peripheral edge along an inner peripheral side surface of the first tank member and the second tank member, and projecting toward the mounting wall portion. And a second positioning projection protruding toward the second tank member, wherein the first positioning projection is a longitudinal end of the mounting wall of the first tank member. The second positioning protrusion is inserted into a first positioning hole formed at a predetermined position in the vicinity, and penetrates a predetermined position near a longitudinal end of the second tank member. The heat exchanger according to claim 1, wherein the heat exchanger is inserted into the second positioning hole. 4. The heat exchanger according to claim 1, wherein the closing member and the second tank member are integrally formed. 5. The heat exchanger according to claim 1, wherein an inlet / outlet of the heat exchange medium is formed in a longitudinal wall of the first tank member. 6. The heat source according to claim 1, wherein a mounting wall of the first tank member has a flat plate shape, and a cross section of the first tank member has a substantially U-shape. Exchanger. 7. The mounting wall portion of the first tank member has a convex shape protruding toward the tube, and a cross section of the first tank member is substantially U-shaped. 5. The heat exchanger according to 5. 8. The second tank member has a concave fitting groove formed along the longitudinal direction at both ends in the short direction thereof, and the first tank member is provided in the fitting groove. The heat exchanger according to claim 1, wherein an end of the longitudinal wall portion is inserted. 9. A step which abuts the inside of the end of the longitudinal wall of the first tank member and the end of the longitudinal wall at both ends in the lateral direction of the second tank member. The heat exchanger according to claim 1, wherein the heat exchanger is formed along a direction. 10. A pair of holding walls in contact with the outer ends of the respective longitudinal walls of the first tank member at both ends in the short direction of the second tank member along the longitudinal direction. The heat exchanger according to any one of claims 1 to 7, wherein the heat exchanger is formed by: 11. A plate between the two end portions of the second tank member having a flat plate shape.
The heat exchanger as described. 12. The heat exchanger according to claim 8, wherein an interval between the two ends of the second tank member is arch-shaped. 13. A second caulking claw provided at both ends of the second tank member, wherein the caulking claw is bent along an end of a longitudinal wall portion of the first tank member. 13. The heat exchanger according to claim 8, wherein the member and the first tank member are temporarily assembled before brazing. 14. The method according to claim 6, wherein a step portion extending in a short direction within a predetermined range is formed along a longitudinal direction at a distal end portion of the long wall portion of the first tank member. 14. The heat exchanger according to 13. 15. A locking projection protruding laterally is formed near the distal end of the longitudinal wall of the first tank member, and the locking projection is formed at both ends of the second tank member. A locking concave portion is formed to fit into the first tank member and the second concave portion by fitting the locking convex portion and the locking concave portion.
13. The heat exchanger according to claim 6, wherein the tank member is temporarily assembled before brazing. 16. The heat exchanger according to claim 15, wherein a projecting amount of the second positioning projection is smaller than a thickness of the second tank member. 17. The heat exchanger according to claim 15, wherein the amount of protrusion of the second positioning projection is larger than the thickness of the second tank member. 18. The heat exchanger according to claim 4, wherein the closing member is formed integrally with side plates provided at both ends in the stacking direction of the stacked tubes and fins. 19. A positioning projection protruding from an end of a closing member integrally formed with the side plate, the positioning projection being a longitudinal end of the second tank member. 19. The heat exchanger according to claim 18, wherein the heat exchanger is inserted into a positioning hole formed to penetrate a predetermined position in the vicinity. 20. A cut-out portion to which a side plate formed integrally with the closing member is mounted is formed at an end of the mounting wall portion of the first tank member. 20. The heat exchanger according to 18 or 19. 21. The second tank member extends in a longitudinal direction of a predetermined width from the first tank member, and
20. The heat exchanger according to claim 18, wherein a positioning hole into which the positioning protrusion of the closing member formed integrally with the side plate is inserted is formed in the extended portion. 22. An insertion hole through which a closing member formed integrally with the side plate is inserted, near the end of the mounting wall of the first tank member. 20. The heat exchanger according to 19. 23. The side plate integrally formed with the closing member has an arch-shaped bypass portion that bypasses a longitudinal end of a mounting wall portion of the first tank member. Or a heat exchanger according to 19. 24. A gap generated between the closing member and the second tank member and the first tank member is the first tank member.
24. The heat exchanger according to claim 6, wherein an end of a joint between the tank member and the second tank member is bent outward and closed. 25. A gap generated between the closing member and the second tank member and the first tank member is the first tank member.
24. The heat exchanger according to claim 6, wherein an end of a joint between the tank member and the second tank member is bent inward and closed. 26. A first tank member, a second tank member, and a closing member constituting the tank portion, wherein a sacrificial corrosion layer is provided on a surface located inside the tank portion, and a wax is provided on the outside of the tank portion. 2. A material layer is provided.
26. The heat exchanger according to any one of items 25 to 25. 27. The heat exchanger according to claim 26, wherein the sacrificial corrosion layer is an aluminum alloy containing zinc. 28. The brazing material layer according to claim 26, wherein the brazing material layer is an aluminum alloy containing silicon.
7. The heat exchanger according to 7.