JPH09203596A - Heat exchanger - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain the bracket assembling structure of a heat exchanger for facilitating the assembling by reducing the number of components. SOLUTION: In the heat exchanger that a partition plate 10 is mounted at the end of a header pipe 4, the plate 10 is formed with a vehicle body mounting bracket 5 by allowing a pin 13 to protrude, a first cutout part 4a along the radial direction of the pipe 4 is formed at the end of the pipe 4, and a second cutout 4b along the lengthwise direction of the pie 4 is formed at the site of the cutout starting side of the first cutout part 4a. The cutout part 4 has a cutout width which makes it possible to insert the pin 13 in the radial direction of the pipe 4, the bracket 5 is slidably inserted into the end of the pipe having the cutout parts 4a, 4b, and fixed by integral brazing.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat exchanger which is easily assembled by temporarily fixing a bracket attached to a vehicle body to a header pipe.

[0002]

2. Description of the Related Art Generally, in a parallel flow type heat exchanger, tubes and fins are alternately stacked, and header pipes (tanks) are connected to both ends of the stacked tubes. The heat exchange medium is provided between the two.

Further, in such a heat exchanger, the openings at the upper and lower ends of each header pipe are closed by blind caps, and one end side of a separate bracket is mounted along the peripheral surface of the header pipe for mounting on the vehicle body side. The other end side is attached to the vehicle body side (for example, JP-A-2-25693), or a pin-shaped bracket having a protruding piece is fixed to a blind cap or a reinforcing member for closing the end portion of the header pipe. , A structure to be attached to the vehicle body side through the projecting piece (for example, JP-A-2-
10353).

The header pipe used in such a laminated heat exchanger is made of a flat brazing sheet coated with a clad material, which is rolled into a circular tube shape by press molding or the like. It is known (Japanese Patent Laid-Open No. 7-198287).

[0005]

However, according to the mounting structure of the heat exchanger described in the above-mentioned publication, the heat exchanger is mounted on the vehicle body side via the blind cap and the separate bracket, so that the number of parts is reduced. There is a problem in that the workability increases and the assembly workability becomes complicated and the cost increases.

Therefore, the cap-type lid having the locking projection can be attached to the header pipe, and the locking projection can be used to directly attach the heat exchanger to the vehicle body without using the bracket. Techniques have been proposed (for example, Japanese Patent Laid-Open No. 3-84397 and Japanese Utility Model Laid-Open No. 63-14258).
No. 6). Further, a dish-shaped cap is fitted inside the end portion of the header pipe, an outer collar provided on the outer periphery of the cap is brought into contact with the end surface of the header pipe, and a vehicle body positioning pin is placed outside the end portion of the header pipe. It has also been proposed to fit a dish-shaped bracket that the user has, to braze the cap and the bracket to the header pipe, and to attach the heat exchanger to the vehicle body by the projection of the pin (for example, actual open flat 6-74).
878).

However, as in the above-mentioned technique, in a bracket assembly structure in which the opening of the header pipe end is brazed by a cap provided with a projection or a cap having a locking projection, etc. In addition to the cap, it was necessary to provide a partition plate inside the header pipe, resulting in an increase in the number of parts and an increase in work processes.

Further, in a header pipe which is usually formed by rolling a flat plate-shaped material into a cylindrical shape, a bracket 5 having locking projections 5a and the like is formed on a conventional header pipe 4 as shown in FIG. When inserting into the slit-shaped notch 4a along the radial direction of the header pipe,
It was not easy to assemble because the protrusions 5a and the like interfered.

Moreover, the outer diameter of the header pipe changes depending on the thickness of the dish-shaped cap or bracket to be fitted,
This may cause inconvenience when mounting in a vehicle body with limited space.

Therefore, in the present invention, the pin and the partition plate are integrated to form a bracket, which is temporarily fixed by fitting the bracket into a notch provided in the end portion of the header pipe to open the header pipe end portion opening. An object of the present invention is to obtain a heat exchanger having a bracket assembling structure that can be closed and can also function as a partition plate.

[0011]

The invention described in claim 1 of the present application is a heat exchanger in which a partition plate is mounted on an end portion of a header pipe, wherein the partition plate is provided with a pin so as to be mounted on a vehicle body. Forming a bracket, forming a first notch along the radial direction of the header pipe at the end of the header pipe, and providing a second notch along the longitudinal direction of the header pipe with the first notch. Of the second cutout portion, the second cutout portion having a cutout width capable of inserting the pin in the radial direction of the header pipe, and the bracket having the cutout portion. It is a heat exchanger configured to be slidably inserted into the end of a pipe and fixed by integral brazing.

According to the second aspect of the present invention, in a heat exchanger in which a partition plate is attached to an end portion of a header pipe, the partition plate includes a pair of large-diameter portions adapted to the outer peripheral shape of the header pipe. And a small diameter portion conforming to the inner peripheral shape of the header pipe, protruding pins are formed to form a bracket for mounting on the vehicle body, and the end portion of the header pipe is further opposed along the longitudinal direction of the header pipe. Forming a pair of vertical cutouts and a pair of horizontal cutouts that communicate with the vertical cutouts and that face each other along the radial direction of the header pipe. The heat exchanger has a structure in which the heat exchanger is inserted from the notch and is slidably attached to the lateral notch and fixed by integral brazing.

According to a third aspect of the present invention, in the first or second aspect of the invention, the header pipe is a flat clad material having at least one surface coated with a brazing material. The heat exchanger is formed into a circular tube shape by brazing and joining the mating surfaces at both ends, and when the header pipe is flat, the notches are punched out.

In the present invention, since the partition plate and the pin are integrated to form the bracket, and the header pipe is provided with the notch of the end opening so that the partition plate constituting the bracket can be fitted, the header pipe The bracket can be assembled and temporarily fixed, and the integrated brazing becomes easy. In addition, since the partition plate and the pin are integrated to form a bracket, and the bracket serves to close the end opening of the header pipe and to serve as a vehicle body mounting portion,
The number of parts is reduced to facilitate manufacturing and reduce costs.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below with reference to the drawings. FIG. 1 shows a front view of a heat exchanger 1 of this example,
In this heat exchanger 1, a plurality of flat tubes 2 and wavy fins 3 are alternately laminated, and both ends of the laminated flat tubes 2 are inserted into tube insertion holes provided in a header pipe 4 to form a header. It is connected to the pipe 4.

The header pipe 4 is shown in FIG.
As shown in, the outer surface is formed by an electric resistance welded pipe, that is, a circular pipe. That is, the header pipe 4 is formed in a circular tube shape by rolling a flat plate-like clad material having at least one surface coated with a brazing material and brazing and joining the mating surfaces 41, 41 at both ends. Then, when the header pipe is flat, each notch is punched out.

Further, as shown in FIG. 1, one header pipe 4 has an inlet joint 6 and the other header pipe 4 has an inlet joint 6.
An outlet joint 7 is communicatively connected to the. Then, an internal partition plate 8 provided at a required position in both header pipes 4
Thus, the heat exchange medium is meandered a plurality of times between the inlet joint 6 and the outlet joint 7. Further, side plates 9 having a U-shaped cross section are arranged on the upper end side and the lower end side of the laminated flat tubes 2.

2 to 5, reference numeral 10 denotes a partition plate, and pins 13 are projected from the partition plate 10 to form a bracket 5 for mounting on a vehicle body.

The partition plate 10 is a member for closing the end opening of the header pipe 4, and has a large diameter portion 10a adapted to the outer peripheral shape of the header pipe 4 and a small diameter portion 10b adapted to the inner peripheral shape of the header pipe 4. And the large-diameter portion 10a
A step 10c is formed at the boundary between the small diameter portion 10b and the small diameter portion 10b.

In this example, the partition plate 10 has pins 1
3 is provided with a convex portion 11 that fits with the convex portion 11.
The insertion hole 12 through which the shaft portion 15 of the pin 13 is inserted.
And a step portion 11a for stopping rotation that prevents the pin 13 from rotating when fitted to the partition plate 10.

The pin 13 is for mounting a heat exchanger on the vehicle body side, and in this example, the projection 11 of the partition plate 10 is used.
The base portion 14 that is fitted to the base portion 14, the rotation stopping step portion 14a provided in the base portion 14, and the shaft portion 15 described above are provided.

A shaft portion 15 of the pin 13 is inserted into an insertion hole 12 provided in the convex portion 11 of the partition plate 10,
The base portion 14 of the pin 13 is fitted into the convex portion 11 and integrated to form the bracket 5. The lower surface of the convex portion 11 of the partition plate 10 and the lower surface of the base portion 14 of the pin 13 are provided flush with each other without forming a step. Further, the rotation stopping stepped portion 11a provided on the convex portion 11 and the rotation stopping stepped portion 14a provided on the pin base portion 14 are brought into contact with each other, so that the rotation of the pin is prevented in the convex portion, which will be described later. The temporary fixing of the pin 13 to the partition plate 10 is reliably performed during the integrated brazing.

The header pipe 4 has a first notch 4a formed at the end thereof along the radial direction of the header pipe, and a second notch 4b along the longitudinal direction of the header pipe.
Are formed in the first cutout portion 4a at the cutout start side. The header pipe 4 is formed by these notches 4a and 4b.
A protrusion 4c is formed at the end of the.

The notch 4a has an upper and lower width into which the partition plate 10 can be fitted, and the projecting end 4a 'at the back thereof is provided.
The stepped portion 10c of the partition plate 10 comes into contact with the inner peripheral surface 4d of the header pipe 4 and the small diameter portion 10b of the partition plate 10 comes into contact with the inner peripheral surface 4d.

Further, the second notch portion 4b has a notch width capable of inserting the pin 13 in the radial direction of the header pipe 4. In this example, the opposing width of the pair of protrusions 4 c, 4 c formed at the end of the header pipe 4 is the shaft portion 15 of the pin 13.
Is formed larger than the diameter of.

Therefore, in the case of this example, the partition plate 1
The bracket 5 formed by attaching the pin 13 to 0 is slidly inserted into the cutout portion 4a of the header pipe 4, and temporarily fixed, and then fixed by integral brazing. That is, the partition plate 10 and the pin 13 are integrated by temporary fixing to form the bracket 5, and the large diameter portion 10 a of the partition plate 10 is cut into the cutout portion 4 of the header pipe 4.
Partition plate 10 by slidingly inserting into a
The small-diameter portion 10b comes into contact with the inner peripheral surface 4d of the header pipe 4 to temporarily fix the bracket 5, and the partition plate 10, the pin 13 and the header pipe 4 are integrally brazed.

As described above, in this embodiment, the first cutout portion is formed at the end of the header pipe in the radial direction of the header pipe, and the second cutout portion is formed in the longitudinal direction of the header pipe. Since the bracket is formed at the notch start side of the first notch, and the partition plate and the pin are integrated to this part, the bracket can be temporarily fixed to the header pipe and integrally brazed. Will be easier. In addition, since the partition plate and the pin are integrated to form a bracket, and the bracket serves to close the end opening of the header pipe and to serve as a vehicle body mounting portion, the number of parts is reduced, and the manufacturing is facilitated and the cost is reduced. Done.

FIG. 6 shows a second embodiment of the present invention.
It is a perspective view of the state where the bracket 5 with which the partition plate 10 and the pin 13 were integrated was assembled to the header pipe 4. FIG. 7 is a plan view of FIG. In the case of this example, the shaft portion 15 of the pin 13 is inserted into the partition plate 10, while the second cutout portion 4b of the header pipe 4 is a cutout width that allows the pin 13 to be inserted in the radial direction of the header pipe 4. Equipped with.
In this example, a pair of protrusions 4c at the end of the header pipe 4,
4c forms a second notch 4b by vertically notching the upper part of the notch 4a shown in FIG. 10, and bends these protrusions 4c, 4c inward so that the opposing width is 4c. The pin 13 is formed to have a diameter larger than that of the shaft portion 15 of the pin 13.

Also in the case of this example, as in the previous example, since the bracket in which the partition plate and the pin are integrated is assembled to the end portion of the header pipe, the bracket can be temporarily fixed to the header pipe and the integrated brazing is easy. Becomes Also,
The partition plate and the pin are integrated to form a bracket, and the bracket serves to close the end opening of the header pipe and to serve as a vehicle body mounting portion. Therefore, the number of parts is reduced, and the manufacturing is facilitated and the cost is reduced. . Further, in this example,
Since the protrusions are formed by notching and bending linearly in the vertical direction, there is an advantage that the amount of cut waste can be reduced.

FIG. 8 is an exploded perspective view of an assembly structure of a header pipe and a bracket showing a third embodiment of the present invention.
In this example, the partition plate 10 includes a pair of large diameter portions 10a, 10a adapted to the outer peripheral shape of the header pipe 4 and small diameter portions 10b, 1 adapted to the inner peripheral shape of the header pipe 4.
0b and the pins 13 are provided in a protruding manner to form the bracket 5 for mounting on the vehicle body. Furthermore, header pipe 4
Has a pair of vertical cutouts 4e, 4e facing each other along the longitudinal direction of the header pipe, and a pair of horizontal cross-sections communicating with the vertical cutouts and facing each other in the radial direction of the header pipe. The cutout portions 4f and 4f are formed. Then, the large-diameter portions 10a, 10a of the bracket 5 are inserted from the vertical cutouts 4e, 4e, and the bracket 5 is slidably attached to the horizontal cutouts 4f, 4f to be temporarily fixed,
After that, they are fixed by integral brazing.

Also in the case of this example, the bracket can be temporarily fixed to the header pipe, and the integrated brazing becomes easy.
In addition, since the partition plate and the pin are integrated to form a bracket, and the bracket serves to close the end opening of the header pipe and to serve as a vehicle body mounting portion, the number of parts is reduced, and the manufacturing is facilitated and the cost is reduced. Done.

[0032]

As described above, according to the present invention, the partition plate and the pin are integrated to form the bracket, and the header pipe is provided with the notch of the end opening so that the partition plate constituting the bracket is fitted. Since this is done, the bracket can be assembled to the header pipe and temporarily fixed, and integrated brazing becomes easy. In addition, since the partition plate and the pin are integrated to form a bracket, and the bracket serves to close the end opening of the header pipe and to serve as a vehicle body mounting portion, the number of parts is reduced, and the manufacturing is facilitated and the cost is reduced. Done.

As described above, according to the present invention, the bracket having the partition plate and the pin integrated with the predetermined notch is temporarily brazed after being temporarily fixed, so that the partition plate closes the end opening of the header pipe. The bracket and the blind cap which were used conventionally are unnecessary, and the labor-saving heat exchanger which does not need to provide a partition plate separately is obtained.

[Brief description of drawings]

FIG. 1 is a front view of a heat exchanger embodying the present invention.

FIG. 2 is an exploded perspective view of a bracket assembly structure according to the first example of the present invention.

FIG. 3 is a perspective view showing a state in which the bracket is assembled to the header pipe according to the first example of the present invention.

FIG. 4 is a sectional view taken along the line AA of FIG. 3;

FIG. 5 is a plan view of the bracket assembly structure according to the first example of the present invention.

FIG. 6 is a perspective view of a bracket assembly structure according to a second example of the present invention.

FIG. 7 is a plan view of a bracket mounting structure according to a second example of the present invention.

FIG. 8 is an exploded view of a bracket mounting structure according to a third example of the present invention.

FIG. 9 is a perspective view of a header pipe formed by rolling a header pipe material into a circular tube shape.

FIG. 10 is a perspective view showing a conventional header pipe and a bracket.

[Explanation of symbols]

 1 heat exchanger 2 tube 3 fin 4 header pipe 4a notch part 4a 'projecting end part 4b notch part 4c projecting part 4d inner peripheral surface 5 bracket 6 inlet joint 7 outlet joint plate 9 side plate 10 partition plate 10a large diameter part 10b small diameter part 10c step part 11 convex part 11a rotation stop step part 12 insertion hole 13 pin 14 stand part 14a rotation stop step part 15 shaft part

Claims (3)

[Claims] 1. A heat exchanger in which a partition plate is attached to an end portion of a header pipe, wherein the partition plate has a pin protruding to form a bracket for mounting on a vehicle body, and the header pipe is attached to the end portion of the header pipe. Forming a first notch along the radial direction of the header pipe, and forming a second notch along the longitudinal direction of the header pipe at the notch start side of the first notch. The second notch has a notch width capable of inserting the pin in the radial direction of the header pipe, and the bracket is slidably inserted into an end of the header pipe having the notch and fixed by integral brazing. A heat exchanger characterized by the above. 2. A heat exchanger in which a partition plate is attached to an end portion of a header pipe, wherein the partition plate has a pair of large diameter portions that conform to the outer peripheral shape of the header pipe and a small diameter portion that conforms to the inner peripheral shape of the header pipe. And a pair of vertically extending cutouts facing each other along the longitudinal direction of the header pipe at the end portion of the header pipe, A pair of laterally extending cutouts that communicate with the longitudinally extending cutouts and that face each other along the radial direction of the header pipe are formed, and the large-diameter portion of the bracket is inserted through the longitudinally extending cutouts and A heat exchanger characterized by being slidably attached to the notch and fixed by integral brazing. 3. The header pipe is formed in a circular tube shape by rolling a flat clad material having at least one surface coated with a brazing material and brazing and joining the mating surfaces at both ends. 3. The heat exchanger according to claim 1, wherein when the header pipe is flat, the notches are punched out.