WO2000031488A1

WO2000031488A1 - Bracket of heat exchanger

Info

Publication number: WO2000031488A1
Application number: PCT/JP1998/005310
Authority: WO
Inventors: Soichi Kato
Original assignee: Zexel Corporation
Priority date: 1998-11-26
Filing date: 1998-11-26
Publication date: 2000-06-02

Abstract

A bracket attached to a header pipe (4) of a heat exchanger (1) for mounting the heat exchanger on a fixed body side, wherein a bracket fixing member (30) is provided for fixing a bracket (20) on the header pipe (4) so that the bracket (20) and the header pipe (4) are integrally joined together with the mounting member; a bracket (40, 50) of a heat exchanger wherein a welding portion (46) (56) for spot-welding is provided; or a bracket (60) of a heat exchanger wherein a fixing member (70) attached to the header pipe is provided for fixing the bracket.

Description

Akira Itoda Sho Bracket for heat exchangers Technical field

The present invention relates to a bracket for mounting a stacked heat exchanger on a stationary body side, and more particularly to a bracket for a heat exchanger in which the bracket is prevented from being deformed during assembly. Background art

In a refrigeration cycle for automobiles, for example, a stacked heat exchanger is known as a heat exchange medium aggregating device. In this type of heat exchanger, a plurality of tubes and fins are alternately stacked, and both ends of the stacked tubes are inserted into and joined to insertion holes formed in a header pipe. At the required locations of these header pipes, there are provided partitioning plates that partition in the longitudinal direction of the header pipes, and the heat exchange medium that has flowed in from the inlet joint provided on the header pipes passes through the gaps between the header pipes. It is provided with a configuration that flows in a meandering manner. Also, each member such as a header pipe and a tube is formed of aluminum or an aluminum alloy. After assembling each member with a jig or the like, the members are integrally brazed by furnace brazing. It is formed.

Further, a configuration is known in which a bracket for attaching the heat exchanger to a fixed frame such as a vehicle body is provided in the heat exchanger in advance.

As shown in FIG. 6, the bracket 80 described above generally has a joint 81 having a slightly larger curvature than the outer circumference of the header pipe of the heat exchanger. Therefore, a connecting portion 82 is formed to project at a predetermined angle with respect to the header pipe, and a mounting member (not shown) for mounting on a vehicle body is formed in the connecting portion 82. A mounting portion 83 to be fitted is formed. Further, a bent portion 85 protruding in the horizontal direction is formed over both ends of the joining portion 81 and the connecting portion 82.

Normally, the bracket 80 is temporarily fixed to a predetermined position of the header pipe by using a jig or spot brazing, and then is connected to the members such as the fin, the tube, and the header pipe. They are all united together. In FIG. 6, the point indicated by the symbol D indicates a spot that has been soldered.

However, when the spots are joined as described above, the bracket is deformed due to the expansion and contraction of the spots due to the heat, and a gap is formed between the header pipe and the bracket. There was the problem of causing bad brazing.

Also, when a jig is used, it is difficult to assemble the bracket at a predetermined position of the header pipe, and it is necessary to remove the jig after brazing. When the production became complicated, there was a problem.

In order to avoid the above-mentioned problems, for example, a bracket described in Japanese Patent Application Laid-Open No. Hei 5-333264 has a curved portion which is provided in a semicircular shape so as to be elastically deformable, It has a mounting portion provided at one end in the circumferential direction of the bending portion, and a projecting portion provided at the other end portion in the circumferential direction of the bending portion, and an inner peripheral surface of the bending portion has an outer peripheral surface of the header pipe. It is composed of a curved surface formed with a radius of curvature slightly larger than the radius of curvature, and when an inscribed circle is drawn on the inner peripheral surface of the curved portion through the tip of the projecting portion, the radius of the inscribed circle becomes The height of the contact portion is set so as to be slightly smaller than the radius of curvature of the header pipe. Therefore, both ends of the curved portion are pressed against the outer peripheral surface of the header pipe by the elastic force of the curved portion, and at one end of the curved portion provided with the mounting portion, the inner peripheral surface is formed by the outer peripheral surface of the header pipe. It is configured to be temporarily attached to the surface. However, if the bracket is temporarily fixed to the header pipe due to the elastic deformation of the curved part of the bracket, the bracket may be deformed by heating during brazing. Yes, if the bracket comes off or becomes misaligned when brazing, there is a risk of causing problems.

Also, the invention described in Japanese Patent Application Laid-Open No. 6-2181385 is characterized in that a bracket is formed with a joint portion that abuts on a header pipe and a mounting portion on a vehicle body side, and a spot is formed on the joint portion. A small hole for welding is formed, and the inner peripheral edge of the small hole can be spotted.

However, the invention described in Japanese Patent Application Laid-Open No. 6-28185 is that when the inner peripheral edge of a small circular hole is spot-welded, the expansion and shrinkage due to the heating during welding causes the bracket to break. In some cases, the joint may be deformed and the edge of the joint may float without coming into contact with the header pipe.

The invention described in Japanese Patent Application Laid-Open No. 7-1590000 has a configuration in which a fixing portion for fixing the bracket to the header pipe is formed.

Also in this case, it is necessary to form a fixed portion on the header pipe, and a new extrusion molding die and the like are required.

In addition, in Japanese Patent Application Laid-Open No. Hei 7-234088, a locking hole for mounting a bracket is formed in a header pipe, while a locking protrusion fitted in the locking hole is formed in the bracket. The locking projection is fitted into the locking hole and a force is applied in the locking direction by the weight of the bracket, preventing the bracket from displacing and temporarily separating the header pipe and the bracket. The invention of the structure to stop is described.

However, the invention described in Japanese Patent Application Laid-Open No. Hei 7-230408 requires that a locking hole be formed in the header pipe, and the manufacturing process is not performed. There is a problem that becomes complicated. In the case where the locking hole is formed, a bracket having a locking projection to be fitted with the locking hole must be formed, and the versatility of the bracket is reduced.

In view of the above problems, it is an object of the present invention to provide a heat exchanger bracket capable of preventing deformation due to temporary fixing and ensuring reliable brazing. Disclosure of the invention

The invention described in claim 1 of the present application is directed to a bracket for a heat exchanger in which a heat exchanger is mounted on a header pipe of a heat exchanger and the heat exchanger is mounted on a fixed body side, wherein a bracket is fixed to the header pipe. And a bracket for a heat exchanger having a structure in which a bracket and a header pipe are integrally joined together with the assembling jig.

In this way, an assembling jig for assembling the bracket to the header pipe is provided, and when the respective members such as the header pipe and the bracket are to be brazed in the furnace, the assembling jig is also integrated. By brazing, the bracket is prevented from being deformed due to heating for spot brazing, and the bracket is securely assembled to the header pipe and integrated. Can be attached.

In the case of the present invention, since the assembling jig is also integrally brazed, complicated work steps such as removal of the jig after brazing are reduced.

For example, if a narrow aluminum band is used as a jig for assembly, the heat capacity at the time of brazing will be small, preventing deformation due to a change in heat capacity and ensuring reliable brazing. Is done. In addition, when the narrow aluminum band as described above is used, the header pad is stably provided without affecting the size of the heat exchanger mounted on the vehicle. By attaching the bracket to the eve, it is possible to secure the plausibility and improve the non-defective rate.

The invention described in claim 2 of the present application is directed to a heat exchanger bracket in which the heat exchanger is attached to a header pipe of the heat exchanger and the heat exchanger is attached to the fixed body side, wherein the bracket performs point welding. This is a heat exchanger bracket with a welded section.

If the weld is a point weld, the amount of heat during welding is less likely to be directly transmitted to the joint itself, which is the brazing portion between the bracket and the header pipe, resulting in a change in the heat capacity of the joint. The bracket is prevented from being deformed by the bracket, and the bracket is assembled to the header pipe, so that the attachment is assured.

According to a third aspect of the present invention, there is provided a heat exchanger bracket in which a heat exchanger is mounted on a header pipe of a heat exchanger and the heat exchanger is mounted on a fixed body side, wherein the mounting bracket is mounted on a header pipe. A bracket for the heat exchanger, wherein the bracket is mounted on the mounting member, and the bracket is mounted on the header pipe.

In this manner, the bracket mounting portion is spot-joined to a predetermined position of the header pipe and temporarily fixed, so that the bracket body provided separately from the bracket mounting portion is provided. In this case, heating during brazing is not applied, and the deformation of the bracket due to a change in the heat capacity of the material forming the bracket can be prevented. That is, after attaching the bracket mounting portion to the header pipe in a spot-like manner and assembling it, assembling the bracket to this assembled bracket mounting portion to attach the tube, header pipe, and bracket The members and brackets are integrally brazed, preventing poor brazing due to material deformation, and enabling the formation of a heat exchanger with the heat exchanger and the bracket integrally brazed. . BRIEF DESCRIPTION OF THE FIGURES

【Figure 1 】

It is a front view of the heat exchanger concerning the example of the present invention.

【Figure 2 】

FIG. 4 is a schematic configuration diagram showing a state where a bracket is assembled to a header pipe using a jig according to a specific example of the present invention.

[Figure 3]

FIG. 4 is a schematic configuration diagram showing a state where a bracket is assembled to a header pipe according to a specific example of the present invention.

[Figure 4]

[Figure 5]

FIG. 2 is a schematic configuration diagram showing a header pipe, an assembling member, and a bracket according to a specific example of the present invention.

[Fig. 6]

FIG. 7 is a schematic configuration diagram showing a state where a bracket is assembled to a header pipe according to a conventional example. BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, specific examples according to the present invention will be described with reference to the drawings. FIG. 1 is a front view of a heat exchanger 1 according to a specific example of the present invention. As shown in FIG. 1, the heat exchanger 1 has a plurality of flat tubes 2 and wavy fins 3 alternately stacked, and each end of the stacked flat tubes 2 is connected to the left and right header pipes 4, 4. 4 is inserted into the tube insertion hole 5 and is connected for communication. Side plates 6 each having a U-shaped cross section are inserted into and joined to insertion holes 7 formed in the header pipe at the upper and lower ends of the laminated tubes 2. Further, a partition plate 8 is provided inside the header pipe 4 to partition the inside of the header pipe 4 in the longitudinal direction. The upper and lower openings of the header pipe 4 are closed by the cap 10. In addition, the inlet pipe 12 or the outlet pipe 13 for flowing the heat exchange medium into the header pipe 4 is joined thereto. The heat exchange medium flows between the tubes of the heat exchanger in a meandering manner between the inlet and outlet joints 12, 13.

Also, the header pipe 4 is provided with a bracket 20 for mounting the heat exchanger on the vehicle side.

Next, the heat exchanger bracket will be described.

FIG. 2 is a schematic configuration diagram showing a state where the bracket 20 is assembled to the header pipe 4 according to the present invention.

As shown in FIG. 2, the bracket 20 of the present embodiment is formed with a joint portion 21 abutting on the outer peripheral surface of the header pipe 4 and having a curvature slightly larger than the curvature of the outer peripheral surface. . Further, from the joint 21, a joint 22 projecting from the joint at an angle suitable for mounting the vehicle is formed. A mounting portion 23 for fitting a mounting member (not shown) when mounted on the vehicle body is formed on a plane of the connecting portion 22. Further, a mounting hole 24 for mounting a jig is formed in the connection portion 22 of the bracket 20 of this example. Further, a bent portion 25 protruding in the horizontal direction is formed over both ends of the joining portion 21 and the connecting portion 22. The bent portion 25 secures the bracket strength against vibrations applied when the vehicle is mounted.

A jig 30 for attaching the bracket 20 to the header pipe 4 has an inner diameter portion 31 having a curvature slightly larger than the outer circumference of the header pipe, and a band shape having elasticity toward the center of the curvature. It is formed in.

Therefore, one end of this band-shaped jig 30 is connected to the bracket. By connecting the other end of the jig 30 to the header pipe by passing the other end through the tube 2 attached to the header pipe 4, the other end of the jig 30 is brought into contact with the header pipe. The bracket 20 can be stably assembled to the header pipe 4 by the elastic deformation of the jig 30.

Thereafter, the heat exchanger 1 with the tube 2, the header pipe 4 and the like assembled therein, and the bracket 20 assembled with the heat exchanger 1 are put into a furnace and brazed in the furnace. Then, the heat exchanger 1, the jig 30 and the bracket 20 are physically fastened.

In this manner, the bracket 20 is assembled to the header pipe 4 by the jig 30, and the jig 30 is joined together with the heat exchanger 1 and the bracket 20. In addition, it is not necessary to remove the jig 30 after brazing, which simplifies the manufacturing process.

In addition, since the bracket 20 is assembled to the header pipe 4 by the jig 30, the bracket 20 is mounted without being displaced or being deformed due to heating during brazing. As a result, brazing properties are improved, and the yield of non-defective products can be improved.

In addition, if the jig 30 for assembling the bracket 20 to the header pipe 4 is formed in a band shape as in this example, the jig 30 itself is small, so that The change in heat capacity due to heating during brazing is reduced, deformation is prevented, and secure brazing is ensured.

Next, another specific example of the present invention will be described.

FIG. 3 is a schematic configuration diagram showing a state where a bracket 40 is assembled to a header pipe 4 according to another specific example of the present invention.

As shown in FIG. 3, the bracket 40 of the present example has a joint portion 41 abutting on the outer peripheral surface of the header pipe 4 and having a curvature slightly larger than the curvature of the outer peripheral surface. . Also, the joint In contrast to 41, a connecting portion 42 protruding at an angle suitable for mounting on a vehicle is formed. A mounting portion 43 for fitting a vehicle-side mounting member (not shown) is formed on the plane of the connection portion 42.

In the bracket 40 of this example, a notch 44 is provided at a position separated by a predetermined distance from an end of the joint 41, and both ends of the joint 41 and the connecting part 42 are provided from the notch 44. A bent portion 45 protruding in the horizontal direction is formed over the entirety. The bent portions 45 ensure the bracket strength against vibrations applied when the vehicle is mounted.

In this example, when the bent portion 45 is formed, both end portions of the bracket 40 separated by the notch 44 remain, and these both end portions are formed by spot welding. It is used as the welded part 46 of the steel.

The welded portion 46 is spot-joined, and the bracket 40 is temporarily fixed to the header pipe 4. A in the figure indicates a spot that is connected in a spot manner.

The welded portion 46 in this example has a shape that is separated by the joint portion 41 and the notch 44, which are the portions where the header pipe 4 and the bracket 40 are to be joined. This prevents the joint 41 from being transmitted to the joint 41 and prevents deformation such as softening due to a change in the heat capacity of the joint 41. Therefore, the assemblability of the header pipe 4 and the bracket 40 is improved, and the assemblability is assured.

Next, another specific example of this example will be described.

FIG. 4 is a schematic configuration diagram showing a state where a bracket 50 is assembled to a header pipe 4 according to another specific example of the present invention.

As shown in FIG. 4, the bracket 50 of the present example is formed with a joint 51 abutting on the outer peripheral surface of the header pipe 4 and having a curvature slightly larger than the curvature of the outer peripheral surface. . Also, it protrudes from the joint portion 51 at an angle suitable for mounting the vehicle. The connection part 52 is formed. On the plane of the connecting portion 52, a mounting portion 53 is formed for fitting a vehicle-side mounting member (not shown).

Further, a bent portion 45 protruding in the horizontal direction is formed over both ends of the joining portion 51 and the connecting portion 52. The bent portions 55 ensure the bracket strength against vibrations and the like applied when the vehicle is mounted.

In addition, the bracket 50 of the present example has a flat portion of the connecting portion 52 from the bent portion 51 a from which the connecting portion 51 protrudes the connecting portion 52 toward the connecting portion 52. Two notches 54, 54 are formed by partially notching. Further, the cut-out portion cut out by the cut-out portion 54 is bent in a direction opposite to the joint portion 51 so as to be horizontal with the joint portion 51 to form a weld portion 56. ing.

The welded portion 56 is spot-joined, and the bracket 50 is temporarily fixed to the header pipe 4. B in FIG. 4 shows a spot-like joint.

Since the welded portion 56 in this example has a shape protruding from the joint 51, which is a portion where the header pipe 4 and the bracket 50 are to be brazed, the amount of heat at the time of joining in a spot manner is reduced by the joint 51. Thus, deformation such as softening due to a change in the heat capacity of the joint portion 51 is prevented. Therefore, the assemblability of the header pipe 4 and the bracket 50 is improved, and the assemblability is assured.

Next, another specific example of the present invention will be described.

Figure 5 relates to another embodiment of the present invention, Remind as in _c Figure 5 is a schematic diagram showing a state to be by assembling the bracket 6 0 in the header pipe 4, bracket of the present embodiment The joint 60 is formed with a joint portion 61 abutting on the outer peripheral surface of the header pipe 4 and having a curvature slightly larger than the curvature of the outer peripheral surface. Also, it protrudes from the joint portion 61 at an angle suitable for mounting the vehicle. The connection part 62 is formed. On the plane of the connecting portion 62, a mounting portion 63 for fitting a vehicle-side mounting member (not shown) is formed.

Further, a bent portion 65 protruding in the horizontal direction is formed over both ends of the joining portion 61 and the connecting portion 62.

Further, the joining portion 61 has an assembling portion to be fitted to an assembling member 70 described later. That is, the joining portion 61 has two grooves 64, 64 into which an assembling piece 73 of an assembling member 70 to be described later is slide-inserted, from the edge of the joining portion 61 to the connecting portion 62. It is formed toward. An edge of a notch piece 66 formed by notching the two groove portions 64, 64 is bent in a direction opposite to the connection portion 62, and a bracket 6 is attached to the assembly member 70. When 0 is assembled, a locking portion 66a is formed to prevent detachment. Also, when the mounting piece 73 of the mounting member 70 is slide-inserted into a portion that is closer to the edge than the grooves 64, 64, a stop for preventing the mounting piece 73 from coming off. The wrapper — 6 7 is formed.

Next, an assembling member 70 for assembling the bracket 60 to the header pipe 4 will be described.

The assembling member 70 has a contact portion 71 that is in contact with the header pipe 4, and a joint hole 72 for point joining is formed in the center of the contact portion 71.

Further, both ends of the contact portion 71 are bent so as to be perpendicular to the header pipe 4, and further, the assembling pieces 73 and 73 bent so as to be parallel to the header pipe 4. Are formed. The periphery of the joint hole 72 is spot-joined, and the assembly member 70 is temporarily fixed to the header pipe 4. C in Fig. 5 shows a spot-like joint.

Brackets 6 are attached to the mounting pieces 73, 73 of the mounting member 70. When the grooves 64, 64 formed in 0 are slide-inserted, the bracket 60 is assembled to the header pipe 4 by the assembly member 70. In addition, the locking portion 66 a formed on the bracket 60 is hooked on the assembling member 70, and the grooves 6 4, 6 4 are slid into the grooves 6 4, 6 4 by the tongues 6 7, 6 7. The inserted assembly pieces 73 and 73 are prevented from moving, and the bracket 60 is prevented from shifting or coming off. Therefore, the bracket 60 is stably mounted on the header pipe 4 by the mounting member 70.

In this way, when the assembly member 70 is spot-joined, the bracket 60 is assembled to the assembly member 70, and the bracket 6◦ is assembled to the header pipe 4, the spot-like junction is performed. In this case, the amount of heat is not transmitted to the bracket 60, so that the bracket 60 is assembled to the header pipe 4 without being deformed by heating. Therefore, the joining portion 61 of the bracket 60 comes into contact with the side surface of the header pipe 4, and a predetermined joining property is secured. Industrial applicability

The present invention relates to a heat exchanger bracket that is assembled to a header pipe of a heat exchanger, and the heat exchanger is attached to a fixed body side. The bracket is prevented from being deformed due to heating during joining, and the bracket is attached to the header pipe. Since it is possible to securely assemble and perform integral joining, it is suitable for a heat exchanger for an automobile, for example, which requires certainty in mounting a bracket.

Claims

Scope

1. Attach the heat exchanger to the header pipe and attach the heat exchanger to the fixed body.

A bracket assembling jig for fixing a bracket to the header pipe is provided, and the bracket and the header pipe are integrally brazed together with the assembling jig. Heat exchanger bracket.

2. Attach it to the header pipe of the heat exchanger and attach the heat exchanger to the fixed body.

A bracket for a heat exchanger, wherein the bracket has a welded portion for performing point welding.

3. Attach it to the header pipe of the heat exchanger and attach the heat exchanger to the fixed body.

A bracket for a heat exchanger, comprising: an assembling member for assembling the bracket to a header pipe; attaching the bracket to the assembling member; and assembling the bracket to the header pipe.